So recently installed a stage 3 kit and had it HP tuned by a reputable tuner. Got everything installed and tuned. Runs great... except at like <1500 rpms. As you can see as my car is idling. it kinda bucks around even at idle, and is just rough in general, and also to note if your lugging it a bit in first or second gear, the bucking, rough idle is very apparent to as the car kinda bucks so its not just idle. Kinda at a loss as to what to do. So far ive cleaned the TB, cleaned the MAF off, and changed the primary 02 sensor as per a reccomendation from my tuner. Any other ideas? or is it just maybe the tune is off? BTW this video is from when my car was just started.. seems to get a bit worse after its hot.


http://youtu.be/nwE2-yFL5vY

Mods if it helps any: ZZP 3" intake, ZZP S3 kit with 2.8, Dual pass, phenolic spacer, HE, etc. (and using the 50s for injectors the s3 now comes with) badmab header, zzp catless dp, custom exhaust

 

Exactly how my car ran.. have the tuner look over the MAF tables and it should be fixed.. I just got out of that mess..

 

My car did this quite a bit when I did my 60's and 2.8. It ended up being a mixture of crank sensor and throttle body being dirty.

 

Reputable tuner? 50s are easy to tune and they don't lope around. Have your tuner look into the car itself

 

Honest sounds like a leak. .... Or trims are far off enough to cause the car go into part of the maf table that it isn't tuned or heatsoak

 

This.. bet money this is it.. Exactly what was wrong with my car and it did the same thing..

Lol - YouTube

It sounds like it has cams sometimes..

 

Wow that sounds exactly like mine.. lol. Now just a 6 hour round trip back to the tuner. -_- Does anyone on here offer remote tuning and rent a cable for a fee? lol

 

Where about in NY are you?

 

I have remote tuners/loggers but not there

 

Ithaca ny... 14850

 

eee that stinks. 6 hour ride for me lol.

 

Dam haha. Well thanks for asking anyway!

 

Ya no problem! Hopefully ya get it fixed sooner than later lol