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MPG- shot and went to hell....

 
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Old 02-24-2010, 09:11 PM
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MPG- shot and went to hell....

hey guys i got a little problem. a couple of days ago i installed my aem cai. i already have have dc 4-2-1 headers and a custom borla exhaust that a shop did for me. i used to have an ebay short ram p.o.s so i bought this cai. the day i put it on, it was like a switch flipped and my car started doin about 13mpg. it burns through gas like no other. i dont know what the hell is goin on and why its happening. a friend of mine told me that since i already have all those mods i either have to tune my ecu or get a chip from "hondata" and hook it up to my ecu. i was already having some issues with the mpg cuz my CEL keeps coming on and off cuz of my O2 sensor is goin bad i guess. i jst dont know what O2 sensor to buy cuz a got a ton off ppl telln me to go with Bosch while the other half tells me to stay away from bosch and go with Denso. so on top of this crap like i said the day i installed that intake its like my mpg shot down to hell. so what should i do?
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Old 02-24-2010, 09:24 PM
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Re: MPG- shot and went to hell....

the o2 sensor can fuk up alot of stuff.. i would go with Denso screw Bosch on a Honda. as far as the CAI giving you poor mpg i doubt it. get that O2 sensor fixed first. im sure other people will chime in soon also.
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Old 02-24-2010, 11:27 PM
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Re: MPG- shot and went to hell....

they are both good brands i ended up replacing mine with denso tho but its deff the 02 sensor killing you
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Old 02-25-2010, 12:14 AM
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Re: MPG- shot and went to hell....

im gonna agree with these guys and def get that o2 sensor fixed. thats definately whats killing you. and you dont have to get your car tuned or anything like that. your friend is an idiot. sure, if you do tune it, youll probably squeeze out some extra ponies. but its prob not worth it
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Old 02-25-2010, 02:55 AM
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Re: MPG- shot and went to hell....

see the thing is guys ive had the 02 sensor goin bad for a while. about 7 months ago. the dam CEL would jst come on and off. it started a little while after i put in my dc headers. i jst honestly didnt have the time to replace 02 sensor. and since it kept comn on and off i nevr rly got around to it. it jst seemed fishy that a bosch cost $80 wen a direct fit denso $45. it kinda threw me off. i even went to the denso website and same thing. does that seem right at all? n i would think i would have the mpg issue as soon as the 02 sensor started goin bad it only became extremely obvious that dam day i put the intake on. any ideas as to why that might be?
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Old 02-25-2010, 03:50 AM
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Re: MPG- shot and went to hell....

its probably just coincidence that it came back on the day you put the intake on. maybe its finally sht the bed. replace it, and see what happens.
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Old 02-25-2010, 04:50 AM
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Re: MPG- shot and went to hell....

lol thats the f***ed up part lol. the day after i put the intake on the the day the CEL came OFF and it stared guzzln gas like a V8. lol. but definitely ill change that sensor n see wat happens. what you think bout the price of it? u think its rly that cheap?
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Old 02-25-2010, 06:02 AM
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Re: MPG- shot and went to hell....

You put the CAI on and your car suddenly realized its potential...to look like a Mustang. Do you live in an area that has a lot of muscle cars in it? This could be why you have the sudden drop in MPGs. See, when you start hanging out with a bunch of V8's the car tries to act like them, thus resulting in worse gas mileage, but better performance. It probably all started with that Borla exhaust...
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Old 02-25-2010, 08:57 AM
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Re: MPG- shot and went to hell....

^^^Not all v8's have better performance than h22's. And I've seen plenty of gsr swapped civic's rape v8 stangs and whatknot
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Old 02-25-2010, 10:40 AM
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Re: MPG- shot and went to hell....

get your o2 fixed i had the same problem.
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Old 02-25-2010, 10:59 AM
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Re: MPG- shot and went to hell....

Dude get a new o2 sensor don't buy bosh ,get the denso , like every one suggested ,also drop some cleaner in your tank.
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Old 02-25-2010, 12:30 PM
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Re: MPG- shot and went to hell....

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Originally Posted by blackbb6 View Post
^^^Not all v8's have better performance than h22's. And I've seen plenty of gsr swapped civic's rape v8 stangs and whatknot
Ive scene a prelude beat a 70 camaro in a drag race
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Old 02-25-2010, 12:45 PM
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Re: MPG- shot and went to hell....

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Originally Posted by BlazeYDH View Post
You put the CAI on and your car suddenly realized its potential...to look like a Mustang. Do you live in an area that has a lot of muscle cars in it? This could be why you have the sudden drop in MPGs. See, when you start hanging out with a bunch of V8's the car tries to act like them, thus resulting in worse gas mileage, but better performance. It probably all started with that Borla exhaust...
lol
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Old 02-25-2010, 12:46 PM
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Re: MPG- shot and went to hell....

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get your o2 fixed i had the same problem.
alright sounds good ill try that first
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Old 02-25-2010, 12:48 PM
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Re: MPG- shot and went to hell....

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Dude get a new o2 sensor don't buy bosh ,get the denso , like every one suggested ,also drop some cleaner in your tank.
how would i put cleaner air in my tank? and what tank? gas?
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Old 02-25-2010, 12:52 PM
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Re: MPG- shot and went to hell....

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Originally Posted by andrey View Post
how would i put cleaner air in my tank? and what tank? gas?
how the hell do you put air in the gas tank.....
also, once the 02 sensor is replaced you will be good someone had this same problem and we just slaped a 02 on there and bam
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Old 02-25-2010, 12:57 PM
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Re: MPG- shot and went to hell....

o2 sensor, and cleaner in the gas tank
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Old 02-25-2010, 07:42 PM
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Re: MPG- shot and went to hell....

I didnt see anyone mention this but I could be wrong...for sure take care of that o2 sensor, but dont forget to check the PCV valve that ones quick and easy. If that doesn't fix it check egr and what not I had gas guzzeling problem as well and mine was a combo of stuff.
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Old 02-25-2010, 08:12 PM
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Re: MPG- shot and went to hell....

k thanks for all the advice guys. ill change it up asap and let u guys know of the results
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Old 02-26-2010, 09:37 PM
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Re: MPG- shot and went to hell....

i had this problem not to long ago first thing i changed was o2 sensor it helped alot but not as much as i hoped for i cleaned everything, egr ports, valve, and fuel injectors. Then i did a tune up happy to say i get 28mpg city 33 highway but thats babying it when i started off i got like 14 mpg anywhere just some more info if the o2 sensor dosnt help as much as you want it to (my s*!t was dirty though from an oil leak
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