Got CAI put in, having problems and need advice.

Hazman

Member
:
1999 Protege LX
Hey all, I had an eBay CAI put in on my '99 LX (had to get it done professionally because a metal bar and fluid container were blocking the fender hole), but I've been having problems since getting it installed.

First off, is the intake supposed to make a moaning, exhaust-like noise when going in higher RPMs? I was expecting more of an airy hiss noise, but I can only hear this when the hood is up and only right when I step on the gas. Instead, the intake seems to be making my exhaust louder or something, but the sound is coming from the hood. The sound isn't exactly pleasant, though.

Secondly, my engine check light came on for the first time last night and has been on since, except for a brief 30-minute period when it went off for some reason. I got it checked out this morning at the place that installed the CAI, and they said the engine code was indictating too lean of a mixture. In other words, they said it wasn't getting enough gas, causing the pistons to overheat and potentially fry them over time...? Is this true?

Third, last night, for the first time, my car would not start. The battery was fine, but I just kept getting a crackling noise as I tried to turn the key. I tried again 30 mins later, and the car started fine, and has been starting fine since, but this still bothers me. I got the intake checked out today, and the place that installed it said my car was backfiring a bit when starting, but they didn't know why.

Finally, it seems like my performance starting from 0 mph is actually slower than before. I don't have that kick that I had with my stock intake. It feels more like I am driving a truck or something now, especially with that loud, droning noise. I am assuming that this performance decrease may be due to the overly lean mixture that the engine is getting, though.

My main concern is the engine light being on and me continuing to damage my car as I drive it. I was told at the installer's shop that I may be able to get a performance chip that will run a richer mixture and basically repair things, but I have heard enough horror stories about those crap resistors, if that's what this "chip" is. I don't want to make things worse. I could put my stock intake back in myself, which is what I am leaning towards doing.

If you read all of this, I sincerely thank you. Any advice is much appreciated. Thanks again.
 
I got a CAI I put in my car and everything is fine. Is your LX a 1.8? There shouldn't be anything wrong with it. Were you there supervising them when they installed it. Could have not connected a connector right or something. Check any connections near the Intake tubing that could have gotten in the way of the install and make sure they are connected good. Other than that you could try disconnecting your battery for 5 minutes so your computer can reset if they didn't do that. It will erase what is has learned before and restart fresh and learn with the intake. I can't seem to see what could have gone wrong. When I installed mine I didn't even reset the computer. Wish I could see your bay to see your install.
 
20EVOLUTION01 said:
I got a CAI I put in my car and everything is fine. Is your LX a 1.8? There shouldn't be anything wrong with it. Were you there supervising them when they installed it. Could have not connected a connector right or something. Check any connections near the Intake tubing that could have gotten in the way of the install and make sure they are connected good. Other than that you could try disconnecting your battery for 5 minutes so your computer can reset if they didn't do that. It will erase what is has learned before and restart fresh and learn with the intake. I can't seem to see what could have gone wrong. When I installed mine I didn't even reset the computer. Wish I could see your bay to see your install.
Hey, my car is a 1.6L, which is what the intake is for. All of the connections seem solid, and they didn't notice anything "wrong" when I took my car back to have it checked out. I will definitely go and disconnect my battery now though. Thanks.
 
sounds odd, yeah try the battery thing. after reconnecting it let it idle for a couple of minutes then drive around the block at regular speed then try doing it again at red line that way the ecu can be properly recalibrated.
 
Hey guys, I took your advice, and the check engine light is off now.

Is there any way I could still be running too lean of a mixture and damaging my engine?
 
Give it some time to see if it doesn't turn on again though. It shouldn't be running lean with the intake in the first place. If you can go back to the place and have them check your system to see if it is still not running to lean. Hopefully with disconnecting the battery and having the computer re-learn your driving and the mixtures it should not do it again. Let use know what happens, hopefully they wont charge to check it.
 
Fortunately, the engine light has not come on after 4 days.

Unfortunately, my off-the-line performance since getting my intake and MSP axleback is still worse than it was when I was running stock. I just don't get it. From 0 mph, I am so incredibly slow. If I push it hard after rolling at around 20 mph, though, then my performance is better than stock. I don't understand!!! Off the line, it slow as hell, but then it seems like once my RPMs get in the 4-5k range, I get this sudden, turbo-like boost. Everything is just really choppy. What's going on?

Thanks again.
 
Hazman said:
Fortunately, the engine light has not come on after 4 days.

Unfortunately, my off-the-line performance since getting my intake and MSP axleback is still worse than it was when I was running stock. I just don't get it. From 0 mph, I am so incredibly slow. If I push it hard after rolling at around 20 mph, though, then my performance is better than stock. I don't understand!!! Off the line, it slow as hell, but then it seems like once my RPMs get in the 4-5k range, I get this sudden, turbo-like boost. Everything is just really choppy. What's going on?

Thanks again.
Installing a CAI or SRI involves removing the Helmholtz resonator which is part of the OEM air intake system. This functions to increase and maintain low speed torque. Some installers of CAI intake systems consequently experience a reduction in low speed torque but with an increase in higher RPM performance. This sounds like what may be happening in your case.
 
Hazman said:
Fortunately, the engine light has not come on after 4 days.

Unfortunately, my off-the-line performance since getting my intake and MSP axleback is still worse than it was when I was running stock. I just don't get it. From 0 mph, I am so incredibly slow. If I push it hard after rolling at around 20 mph, though, then my performance is better than stock. I don't understand!!! Off the line, it slow as hell, but then it seems like once my RPMs get in the 4-5k range, I get this sudden, turbo-like boost. Everything is just really choppy. What's going on?

Thanks again.
CAI see more gains at the top end. Short Ram intakes see more gains at the lower end.
 
right, cai = top end, short ram = bottom end. also from what i have heard before you may actually lose some power on the bottom end with a cai.
 
hhmm....so depending on what you want the most, if its low end get a short ram? High end, get a CAI?
 
Thanks, you guys are really helpful.

Basically, without changing my intake or exhaust (which are my only performance mods as of yet), is there anything else (financially reasonable) that I could do in order to re-gain that low-end torque?
 

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