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Old 09-04-2014, 06:15 AM
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VTEC

How can I get the VTEC to kick in at a lower RPM?
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Old 09-04-2014, 09:45 AM
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Re: VTEC

chipped ecu
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Old 09-04-2014, 11:11 AM
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Re: VTEC

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Old 09-04-2014, 11:56 AM
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Re: VTEC

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Originally Posted by Lazarky View Post
stop you cant lock threads
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Old 09-04-2014, 06:05 PM
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Re: VTEC

Where can I find a chipped ECU? Do they not make hand held tuners where you can plug in and upload a tune?
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Old 09-04-2014, 06:51 PM
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Re: VTEC

I would look into vtec controllers but having it kick on at say 4k or lower would in my mind bug me out cause being in vtec a lot burns oil more and with my case having 160k miles isn't good, once in a while venturing into the 6k maybe 7k rpm range is ok. 5200 rpm is perfect vtec crossover, I usually shift at 4.5 to 5k rite b4 vtec but occasion I'm like hell I'm at 5 grand lets go into vtec lol. The h22 is soo much fun and a well built engine. Google vtec controllers and see if u can get more info on em
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Old 09-05-2014, 06:39 AM
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Re: VTEC

Don't forget to put on a......


Your poor Prelude
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Old 09-05-2014, 08:51 AM
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Re: VTEC

Honda picked the spot vtec kicks in based on a lot of engineering to achieve a balance of and reliability. So unless you can re-arrange where certain forces take place inside the combustion chamber you ought to leave well enough alone...
That is unless you can afford to rebuild your motor from time to time due to putting stresses on your moving parts they were not designed to handle.
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Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
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I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

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Old 09-05-2014, 08:54 AM
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Re: VTEC

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stop you cant lock threads
no but it should have ended there.
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Old 09-05-2014, 10:44 AM
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Re: VTEC

X2 honda know better than you do. However if the engine is rebuilt with heavy duty internals and given adequate oil changes surely that'ed give you a better stretch
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Old 09-05-2014, 10:45 AM
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Re: VTEC

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Originally Posted by SiR View Post
Where can I find a chipped ECU? Do they not make hand held tuners where you can plug in and upload a tune?
Hondata s300
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Old 09-05-2014, 12:30 PM
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Re: VTEC

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Where can I find a chipped ECU? Do they not make hand held tuners where you can plug in and upload a tune?
It's not like swapping a hard drive. It's also not like rooting a phone where a bad here or there and you do a factory reset and all is good.
Bad code means possibly $1500 or more to replace that boat anchor that used to be a good running engine before deciding to try to out think those little dudes in labs coats with proppeler hats.

In other words, take a few $ to pay a little dude who wears a proppeler hat to ensure whatever changes you make are done correctly.
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Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
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I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead
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Old 09-05-2014, 02:07 PM
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Re: VTEC

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Old 09-05-2014, 06:40 PM
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Re: VTEC

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Originally Posted by Lazarky View Post
no but it should have ended there.


Seriously, when people are complaining about poor gas mileage on stock hondas... (You heard right), SIR, wants to ruin it more??? More power to him.

Remember to tighten all those motor mounts to withstand all the Poweerrrrrrrrrr

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Old 09-05-2014, 07:09 PM
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Re: VTEC

Seriously, unless you're reworking the head, changing the shift point for the cams will do a lot of nothing. That's all VTEC does -- it shifts a new set of cam lobes into place, optimized to keep the head breathing efficiently at a higher RPM. Significantly moving the shift point down also means changing the size of the valves, or changing the cam profile(s), or both, plus remapping the fuel delivery, if you want more power out of it.

Check out any tutorial on how the valve train works to move air in and out of the cylinders, and the basic function of VTEC (and the penalties for messing with it uniformed) is pretty clear.
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Old 09-06-2014, 12:54 AM
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Re: VTEC

First of all, I'm not looking to ruin or destroy anything. I just know that with some other cars you can just plug in a handheld tuner and upload pre-programmed tunes and I was wondering if there was something similar for the prelude. I 'm just looking for ways to get more low end torque.
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Old 09-06-2014, 01:20 AM
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Re: VTEC

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First of all, I'm not looking to ruin or destroy anything.
I remember when I said those famous last words. 2000 miles later I had a spun bearing.
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Old 09-06-2014, 01:26 AM
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Re: VTEC

How did you do that?
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Old 09-06-2014, 08:09 AM
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Re: VTEC

Quote:
Originally Posted by SiR View Post
First of all, I'm not looking to ruin or destroy anything. I just know that with some other cars you can just plug in a handheld tuner and upload pre-programmed tunes and I was wondering if there was something similar for the prelude. I 'm just looking for ways to get more low end torque.
Your exhaust system can provide you with more low end torque as the car is now.
Relieving some back pressure will allow those rpm's to climb into vtec mode a bit quicker.

I prefer not to start a 'how much back pressure' debate. But will say the H22 is capable of breathing a helluva lot better than it arrived here from Japan without hurting a darn thing. Emmisions standards cause flow to be held back to reduce pollution output. Part of the secret behind the Type S extra horsies was due to it's exhaust system. It's either 2.25 or 2.5" I forget. But if you go with a nice, balanced exhaust system you can feel a bit more thump from the car without changing anything else.
If you do that, consider a true cai that enters into the front bumper and not a chopped kind that sucks in air from the engine bay.

A k-teller 2.25 or 2.5" stainless exhaust with a vibrant stealth muffler, a high flow cat, a good resonator, along with a stock air intake and a k&n filter will provide you with some of what you seek.

Want to feel real boost? Go drive a 3rd gen for a while. B20 engine....then after a month you'll be absolutely thrilled at what that H22 provides you right now.
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Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

Last edited by bykfixer; 09-06-2014 at 08:23 AM.
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Old 09-06-2014, 09:10 AM
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Re: VTEC

Bykfixer your so right, though we love our third gens for many different reasons ;)
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Old 09-06-2014, 11:45 AM
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Re: VTEC

^^ Agreed.
Oh man, the 3rd is a great car. No doubt about that. Style points and comfort it was the deal. The zip at the time they were new was as good as it got back then with 4 cylinders. Trouble is the H motor beats the pants off those B engines from the Prelude.

I drove a pair of thirds for a year. As much fun as they were, I got back into my old 97 and it was night and day. I never shifted outta second gear driving around town. It can take off in second and go city speed limits in second as well. And for a little fun, has enough @$$ to f@#k with the mustangs red light to red light and never change gears because it revs so high before the red line.

Right now my son and I have 5th gen projects going. But there's a cherry 91 waiting patiently in moth balls. It's our favorite besides the 4ws model.
I do like that INX you have B20. Honda did good with the 3rds. The holy grail imo is the TCV model.
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Quote:
Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
Quote:
Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

Last edited by bykfixer; 09-06-2014 at 11:52 AM.
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Old 09-06-2014, 07:06 PM
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Re: VTEC

Thanks man :) when I saw the inx for sale I was broke as but knew I had to have it, which is the TCV model? lol we're currently those third gen owners thread jacking this thing, sorry OP!
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Old 09-06-2014, 11:05 PM
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Re: VTEC

Quote:
Originally Posted by SiR View Post
First of all, I'm not looking to ruin or destroy anything. I just know that with some other cars you can just plug in a handheld tuner and upload pre-programmed tunes and I was wondering if there was something similar for the prelude. I 'm just looking for ways to get more low end torque.
It's possible to remap the fuel-air-rpm map via a replacement or programmable chip, but don't expect much out of them on Hondas, and be prepared to pay a price in fuel economy and emissions (if you live in an area where that's tested) for what you do get. Tuning naturally-aspirated Hondas lost the easy button a few decades ago. By the time you get to the H-series engines, even the normal rules of thumb for intake, header, and exhaust bolt-ons don't apply, because the stock parts are so good. 4th and 5th gen Preludes come with cold-air intakes, for example -- the stock duct draws air from inside the right-hand front wheel well. And look at the exhaust manifold on the H22...a no-kidding tubular header, with a not-bad job of pulse-matching. Even the cast header on the H23 is pretty good. The only easy path to power on Hondas is forced induction, which is another can of worms.

For anyone interested in tuning naturally-aspirated engines, I recommend they read "The Design and Tuning of Competition Engines", by Philip Smith. It's an old book -- the latest edition was published in 1977 (older than most of you...and my copy is older than I am!) -- but I've yet to come across another book that clearly explains in detail how everything works together.
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Old 09-07-2014, 04:32 AM
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Re: VTEC

I'm thinking of doing a vibrant header, magnaflow high flow cat and the Apexi WS2
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Old 09-07-2014, 12:32 PM
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Re: VTEC

If you like the sound, go for it. I put a WS2 on my car when the stock system wore out -- still sounds great 15 years later.

Don't expect much change on the dyno.
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