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skunk2 intake manifold problems

 
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Old 11-13-2009, 06:38 PM
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skunk2 intake manifold problems

right im stuck. i have intalled a skunk2 intake manifold with a blox throttle body. problem is something is obviously not right cos when i start it it idles at about 3k revs, then when i accelerate it dies and stalls.
as far as i know i have put all the pipes on, however i did guess a few, and sensor wise i have put all sensors back on and im pretty sure they are all in the right place however i do seem to have one plug lead that i dont know where it plugs into as i cant find a sensor near it. this sensor is right by the intake pipe, so as you stand looking into the engine bay its to your left.
as its a blox throttle body i have had to loop the coolant pipes.

could really do with any ideas whats gone wrong, i really think it probably just a pipe or two round the wrong way or that sensor plug that i cant find a sensor for. so annoying......
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Old 11-13-2009, 07:02 PM
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Re: skunk2 intake manifold problems

make sure the TPS and MAP sensor connectors are not crossed. They are the same connector and will plug into each other without throwing a CEL light. The engine will idle with them crossed, but if you give it any gas the engine will stall.

As long as everything that needs vacuum, has a vacuum source, it doesnt matter where it goes. You also need to check that the TB is closing fully and double check the voltage of the tps to ensure the ecu is reading the correct throttle percentage.
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Old 11-13-2009, 07:09 PM
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Re: skunk2 intake manifold problems

really apprieate the reply mate. i will check the tps sensor and map sensor. how would i check the ecu is reading the tps?
what about the egr stuff? is that possible to cause this problem? i need to check i have looped the coolant properly too.
im trying to find threads where people have had problems installing these manifolds but searching seems to come back with irrelevent threads
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Old 11-13-2009, 08:12 PM
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Re: skunk2 intake manifold problems

what year is your car? if its obd2 like mine, it will throw a cel soon enough, for "insufficient egr flow." it hella sucks when it does it too. because it starts running like ****(any one who has had it happen know exactly what i mean.)
but if you get it tuned you can avoid it all together.
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Old 11-13-2009, 08:14 PM
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Re: skunk2 intake manifold problems

its 1997 obd2, i am changing to obd1 tho in a matter of days tho.
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Old 11-13-2009, 08:31 PM
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Re: skunk2 intake manifold problems

cool cool. what ecu you going to run?
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Old 11-13-2009, 08:55 PM
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Re: skunk2 intake manifold problems

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Originally Posted by rburnham11 View Post
really apprieate the reply mate. i will check the tps sensor and map sensor. how would i check the ecu is reading the tps?
what about the egr stuff? is that possible to cause this problem? i need to check i have looped the coolant properly too.
im trying to find threads where people have had problems installing these manifolds but searching seems to come back with irrelevent threads
.:FFS TechNet : OBD2a ECU Pin out Schematics :.

That link will tell you the correct wire color for each sensor (look at connector D in the link to get the wire color). Once you have determined that each connector is on the right sensor, then you will need to check the voltage on the TPS sensor. With the connector plugged in and the ignition "on" backprobe the middle wire with the red lead and ground the black lead. Make sure the multimeter/voltmeter is set to read volts. Closed, the meter should read .45volts. Hold the throttle open and it should read in the 4.5 to 5volt area. The main voltage to set is the closed voltage.

The coolant lines are very simple. You dont have a FITV anymore so you simple make a "circle" with the coolant lines. Looking forward at the engine, there should be a coolant line on the back of the thermostat. That one will go to the right nipple on the IACV. The other hose on the front/top of the thermostat will go to the nipple on the left on the iacv. Its just a coolant loop so it will flow by the IACV and keep it from freezing.
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Old 11-14-2009, 06:28 PM
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Re: skunk2 intake manifold problems

U should really tune for a throttle body and intake manifold. Your engine is taking in more air.

When you accelerate and it dies. Thats because your engine runs too lein when you open the throttle body. You need to get the right A/F mixture. Best way to do it is get it tuned. Phearable.net is really good. You can get a chipped ECU and then tell them your mods and they'll tune a chip for you.

Does your engine rev to 3k and die. Like revving up and down? If so then its trying to find an Idle point. Try adjusting your idle screw.
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Old 11-14-2009, 08:46 PM
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Re: skunk2 intake manifold problems

no it starts then stays at around 3k then if u open the throttle body just very very slightly it does start to rev higher but really as soon as u open it the revs drop instantly and untill it stalls.
i realise about the tuning and i will get it tuned but i was hoping i could get it running and driveable with stock ecu. i am replacing the ecu with a p28 chipped ecu very soon but like i say i wanted to get this installed before the tune.
im pretty sure its either connectors round the wrong way or a missed pipe, it could be the connector plug that i cant find a home for tho. would love to know where that goes.
what would cause these symtoms, might give me a clue to what im lookin out for
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Old 11-14-2009, 08:49 PM
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Re: skunk2 intake manifold problems

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Originally Posted by Stealthx47 View Post
U should really tune for a throttle body and intake manifold. Your engine is taking in more air.

When you accelerate and it dies. Thats because your engine runs too lein when you open the throttle body. You need to get the right A/F mixture. Best way to do it is get it tuned. Phearable.net is really good. You can get a chipped ECU and then tell them your mods and they'll tune a chip for you.

Does your engine rev to 3k and die. Like revving up and down? If so then its trying to find an Idle point. Try adjusting your idle screw.
buying a chipped ecu is not tuning

the stock ecu will run an aftermarket TB and IM fine as long as all the sensors are correct. You wont get all your power from it, but the engine will run fine.
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Old 11-15-2009, 01:11 AM
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Re: skunk2 intake manifold problems

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Originally Posted by 98vtec View Post
buying a chipped ecu is not tuning

the stock ecu will run an aftermarket TB and IM fine as long as all the sensors are correct. You wont get all your power from it, but the engine will run fine.
You can get a chipped ECU and then tell them your mods and they'll tune a chip for you.


Did you miss that part?
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Old 11-15-2009, 06:43 AM
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Re: skunk2 intake manifold problems

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Originally Posted by Stealthx47 View Post
You can get a chipped ECU and then tell them your mods and they'll tune a chip for you.


Did you miss that part?
did you miss the part that im a tuner and you arent?

that is NOT a tune. that is a guessmap. there is ZERO tuning until you bring your car to a tuner and have the tuner physically tuner the engine.


i guess i missed that part where you didnt know what you were talking about.
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Old 11-15-2009, 09:16 AM
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Re: skunk2 intake manifold problems

right guys i have swapped the tps and map sensors over and now its doing what somebody asked if it was doing f tat maes sense) its reving to about 3k then drops back down the revs up again and keeps doing this, but when i open the throttle it revs, so i believe its just a idling issue now. somebod mentioned adjusting the idle screw, could u tell me where this is please? also any other reasons that would cause it to rev up and down like this? its like its trying to find its correct idling point.

oh and yes i will be getting a proper tune but for now i just want it to run. i want to get my car how i want it and running with a guess map tune, like pherable chips, then i will get it tuned, no point paying mega money for dyno tuning over and over again is there, way to expensive. bt will do when i have the car how i want it.... so that covers the tuning.
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Old 11-15-2009, 07:56 PM
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Re: skunk2 intake manifold problems

sorted.
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Old 11-15-2009, 10:01 PM
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Re: skunk2 intake manifold problems

you have a vacuum leak. Get some carb cleaner and spray it around the mating areas of the Tb and where the IM meets the head as well as the vacuum hoses/source.
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Old 11-16-2009, 02:01 AM
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Re: skunk2 intake manifold problems

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Originally Posted by 98vtec View Post
did you miss the part that im a tuner and you arent?

that is NOT a tune. that is a guessmap. there is ZERO tuning until you bring your car to a tuner and have the tuner physically tuner the engine.


i guess i missed that part where you didnt know what you were talking about.
A tune is a tune buddy. Weather its a chip for your car, piggyback or standalone, a tune is a tune. Its specific to his upgrades.
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Old 11-16-2009, 02:43 AM
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Re: skunk2 intake manifold problems

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A tune is a tune buddy. Weather its a chip for your car, piggyback or standalone, a tune is a tune. Its specific to his upgrades.
i give up. All my years of tuning engines i could have just bought chips "tuned" off the internet!!! damnit!!!
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Old 11-16-2009, 01:54 PM
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Re: skunk2 intake manifold problems

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i give up. All my years of tuning engines i could have just bought chips "tuned" off the internet!!! damnit!!!
Never said it was better then a live tune. Not everybody can afford the equipment/body to get they're car dyno/road tuned. Phearable does both and they do a damn good job at both.


So to stay on topic youd get alot more out of your investment by doing a tune to that car, no matter what kind it is.
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Old 11-16-2009, 02:10 PM
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Re: skunk2 intake manifold problems

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Originally Posted by Stealthx47 View Post
A tune is a tune buddy. Weather its a chip for your car, piggyback or standalone, a tune is a tune. Its specific to his upgrades.


this is why you have so much neg rep you dumbass. you're arguing w/ one of the PIONEERS of prelude tuning, and you still think your right and he's wrong

so mikey, once you go boost, i DARE you to drive 10K hard miles on simply the basemap, since that's "tuned" according to you . you REALLY need to get your facts straight and know ALL your sh!t before arguing with someone, especially blake, on something you clearly have zero knowledge of.

and no, he WON'T get more outta the car from a tune, if the engine isn't even running correctly in the first place. that would be a complete waste of time and money.
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Old 11-16-2009, 02:17 PM
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Re: skunk2 intake manifold problems

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this is why you have so much neg rep you dumbass. you're arguing w/ one of the PIONEERS of prelude tuning, and you still think your right and he's wrong

so mikey, once you go boost, i DARE you to drive 10K hard miles on simply the basemap, since that's "tuned" according to you . you REALLY need to get your facts straight and know ALL your sh!t before arguing with someone, especially blake, on something you clearly have zero knowledge of.

and no, he WON'T get more outta the car from a tune, if the engine isn't even running correctly in the first place. that would be a complete waste of time and money.
well said!
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Old 11-16-2009, 04:21 PM
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Re: skunk2 intake manifold problems

sorry u lost me there when u said i wouldnt get more from my car with a tune? why wouldnt i? surely thats why we tune our cars isnt it? not bitching just wanna know what u mean twokexlv6coupe.....
the way i understood it, and by all means correct me (please do, its how we learn!) but i thought a basemap tune would get the car running relatively safely with the mods u had on as tempory basis, then to get full potential u would get a proper dyno tune to safely get as much as u can outta the engine and mods u got on
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Old 11-16-2009, 04:33 PM
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Re: skunk2 intake manifold problems

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Originally Posted by rburnham11 View Post
sorry u lost me there when u said i wouldnt get more from my car with a tune? why wouldnt i? surely thats why we tune our cars isnt it? not bitching just wanna know what u mean twokexlv6coupe.....
the way i understood it, and by all means correct me (please do, its how we learn!) but i thought a basemap tune would get the car running relatively safely with the mods u had on as tempory basis, then to get full potential u would get a proper dyno tune to safely get as much as u can outta the engine and mods u got on

yes, that's exactly how it works.
mikey (stealth) is claiming that your car isn't running right because it's not tuned, which is BS cuz plentya ppl are running this same manifold untuned and it runs perfectly fine. he thinks by getting it tuned will fix your problem, which it won't, cuz its a hardware problem or some sensors aren't hooked up properly, but a tune right now isn't going to do anything for you since the engine isn't running properly.



AFTERRRRRR you the idling/accelerating issue figured out, THEN a tune will be do your advantage, but not before getting the engine running correctly.
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Old 11-16-2009, 05:15 PM
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Re: skunk2 intake manifold problems

ok i think i get what he meant. because ya alot of us are running that mani,(including myself) right now untuned, without really any big problems. but how many of us are running a larger throttle body as well? also untuned? gonna guess not many..

because ya he very well may have the sensors hooked up right and with using the stock throtle body the ecu can somewhat compensate for the added air flow from the intake mani. i mean not to its full advantage but at least enough to run right. but you add in the extra air flow from the throttle body. and thats one thing the ecu cant measure even with the sensors all hooked up correctly. which is why i think a tune WOULD be a good idea at this point...

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Old 11-16-2009, 11:17 PM
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Re: skunk2 intake manifold problems

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Originally Posted by Rebel_Luder98 View Post
and thats one thing the ecu cant measure even with the sensors all hooked up correctly. which is why i think a tune WOULD be a good idea at this point...

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sure it can. Thats the job of a map sensor
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Old 11-16-2009, 11:38 PM
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Re: skunk2 intake manifold problems

right but doesnt the map sensor measure at the throttle body?
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Old 11-17-2009, 12:08 AM
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Re: skunk2 intake manifold problems

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right but doesnt the map sensor measure at the throttle body?
ok think about this for a sec. A map sensor can read from full to no vacuum and even positive pressure. What in upgrading a throttle body is going to effect the ecu from not being able to read vacuum via map sensor?
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Old 11-17-2009, 12:18 AM
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Re: skunk2 intake manifold problems

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this is why you have so much neg rep you dumbass. you're arguing w/ one of the PIONEERS of prelude tuning, and you still think your right and he's wrong

so mikey, once you go boost, i DARE you to drive 10K hard miles on simply the basemap, since that's "tuned" according to you . you REALLY need to get your facts straight and know ALL your sh!t before arguing with someone, especially blake, on something you clearly have zero knowledge of.

and no, he WON'T get more outta the car from a tune, if the engine isn't even running correctly in the first place. that would be a complete waste of time and money.

I never said a basemap tune was the best thing Now did I? I never said a chip is a full tune? Nor will his mods require what my mods will need. Completely irrelevant. A chip will be about the same as a cobb access port yet not tuneable on the fly. Didnt know subies werent doing it right..

And by the way i only have negative rep from boneheads who neg repped me for the stupidest things.
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Old 11-17-2009, 12:19 AM
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Re: skunk2 intake manifold problems

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ok think about this for a sec. A map sensor can read from full to no vacuum and even positive pressure. What in upgrading a throttle body is going to effect the ecu from not being able to read vacuum via map sensor?
right but its not just about the pressure. it may be the same certain amount of pressure(or vacuum). so the ecu is adjusting for that amount of pressure(or vacuum). but what i was trying to get at, is the map sensor cant read the extra volume of air being moved now.. it doesnt know the difference.

although i'm not entirely sure, just what i'm thinkin would make sense....
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Old 11-17-2009, 12:49 AM
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Re: skunk2 intake manifold problems

have u changed ur ecu...when i did that same job i had to change my ecu and chip out a p28
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Old 11-17-2009, 12:53 AM
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Re: skunk2 intake manifold problems

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Originally Posted by Stealthx47 View Post
I never said a basemap tune was the best thing Now did I? I never said a chip is a full tune? Nor will his mods require what my mods will need. Completely irrelevant. A chip will be about the same as a cobb access port yet not tuneable on the fly. Didnt know subies werent doing it right..

And by the way i only have negative rep from boneheads who neg repped me for the stupidest things.
nope, you never said any of that. instead, you gave completely wrong information to the OP telling him to waste his money on something that wouldn't even fix his problem. good job, keep it up, i'm sure the OP will appreciate wasting his hard-earned money on something you told him to do which wouldn't even fix the problem
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