"Choke" when i WOT instantly (After CAI Install)

[Tsiqara]

Hello,

Yesterday i have installed CAI on my VR6. Took idea from the FAQ, and installed it just like in that picture:



I had to move that "BLACK EVAP VALVE" somewhere to place my filter instead, so i moved valve behind the right side wheel, under the fender (between fender and plastic wheel shield) .



(This is not my pic, and not actual EVAP, mine is cylinder)


After that, car became to act strange, it had very bad revs, was slow on gaining revs, engine made noise just like it was going fast but there was no power. I restarted the car couple times and it normalized itself after while. But now it has that strange thing: when i WOT instantly, car chokes for just a second and then revs normally, it has some kind of a Delay when i WOT. And over all i don't like it's power until 25-30 rpm, it acts like retarded


What can be causing this ?

No CELS, I didnt have this problem before, CAI is not leaking for sure as well as EVAP is not. Only things unplugged were: EVAP Plug, IAT (I have it on intake tubing) and MAF. Of course i plugged them back and reset CEL codes right after.

[dogyouare]

it might have to adapt to different air flow pattern that is why the honey cone plastic is installed on maf. but let us know

[GTIVRon]

Is the MAF located after a nice long striaght piece of pipe? Or right after a bend? Where did you put the AIT sensor, before or after the MAF sensor?

Also, cold air intake will affect throttle response some. Longer tubing means a longer "stack" of air has to get moving. Try breathing through a straw, then cut that short down to 2-3 inches and breathe through it again. Note the difference.

[Tsiqara]

What i did today is that i cleaned Throttle Body (had some dirt there). and put off battery wires. So it should be reset when ill go out for a drive tomorrow. Lets see what happens if it's a amatter of adjustment.



As for locations:

MAF is there where it was originally (Near suspension mount), its in middle of front bend and TB Bend.
IAT is after the MAF, almost before Bend where the filter is, not straight at bend but near it).



Also, for some reason when i did all my job described above, a ticking noise was coming from the EVAP Pump (Green little thing where eavp plug goes). i replaced it too... dont know why it made that noise....

[GTIVRon]

"After MAF" usually means between the MAF and throttle body. It sounds like yours is before the maf, between MAF and filter. I'm wondering if the AIT might be causing turbulence and affecting the air flow over the maf at lower velocity (lower RPM)..

[Tsiqara]

"After MAF" usually means between the MAF and throttle body. It sounds like yours is before the maf, between MAF and filter. I'm wondering if the AIT might be causing turbulence and affecting the air flow over the maf at lower velocity (lower RPM)..

Yes, ur right IAT is between MAF and Filter, and IAT was installed 2 weeks earlier before CAI and it never caused problems before... im like :OOO WTF happened


And that strange ticking of that Purge Pump (or whatever it is, why it started? )

[GTIVRon]

That is a frequency valve. It pulses, but not always.

What intake setup did you have before you did the cold air, if you already had the IAT sensor mod?

[Tsiqara]

I just had Cone Filter instead of OEM Air Box, so i would call that HotAirIntake

I noticed Freq. Valve pulsing when i replaced old with new one, but the old one started to tick very frequently and nonstop after CAI was installed and EVAP Canister moved to other location. Maybe because it sucked dirt a bit ?

[GTIVRon]

What size piping did you use for the intake? I'm thinking you are just experiencing reduced throttle response.

[Tsiqara]

What size piping did you use for the intake? I'm thinking you are just experiencing reduced throttle response.

Same diameter size as OEM Tube, 3 " piping.

UPDATE: After ECU reset and some Throttle cleaning, Car pulls much better and with just a little delay when i WOT ... But now another thing came up. I hear "shooting" from the back of my exhaust just like it's running reach or something. I hear it when i push gas pedal deep and release it afterwards, while the rev is coming down (on 20-30 rpm). Also while driving and shifting in lower gear when the rev is around 20-3rpm) while the gas pedal is released.That shooting is more intense when the engine is fully warmed up.

Maybe that's co-incidence and has no relation to CAI but something is not working as intended. Still no CEL-s.

[dogyouare]

sounds like your running rich... take the air temp sensor out, plug the hole and move it in between intake elbow and see how that runs.

[Tsiqara]

sounds like your running rich... take the air temp sensor out, plug the hole and move it in between intake elbow and see how that runs.

Between intake elbow?? u mean in the middle of the Intake tube?? or right on the bend place of the tube ??

Right now it's in middle of Tube, between Filter and MAF.

I also have my OEM Sensor on my Manifold (i didn't remove it from there) Ill try to plug back there and see if it helps but i don't think it will help... ill give a try....