Ok guys bear with me here...

First of all ill state the problem, When i go full throttle it will take off then feel like i hit a brick wall or something, i wanna say fuel cut but not too sure, it is intermittent and does not do it at any certain rpm just when im on full throttle for a few seconds, if i just do short bursts its ok.

Now for the mods...."there a lil different from my sig now"

2.6 Pulley
BKR8EIX Plugs
Ported SC
60Lb Injectors
Stock upper intake with aftermarket air filter attached "box Removed"
Shortie header
3 inch exhaust
Adjustable tensioner
Cobra Heat Exchanger
stage 2 belt
Tuned ECU

Ive changed the plugs and no difference, ive been on this tune for a while now and no prob, no check engine lights or anything. Ive ran some 110 Octane through it but it was diluted with 93. As far as i know i do now think the Filter has been changed so i guess that is next.

does anyone have any ideas or has anyone experienced this before? Any info would be greatly appreciated.

 

change fuel filter, clean your throttle body? might help... can't hurt thats for sure.

i see stage 2 belt? it's not belt slip is it?

 

I got the adjustable tensioner also, ima go a lil tighter on it though just to be safe...

 

Try cleaning your MAF sensor with a good MAF cleaner.

 

ur belt slipping would not cause that problem. it has noting to do w/ the car moving.sounds like it may be a fuel issue perhaps ur fuel injectors are starting to get a little clogged. does it happen when the car is hot or cold? u may also have a intermittent electrical problem that happens to quick to set a code. id say try to make it happen a lot to see if maybe it sets a code then get it looked at. if ur still under warranty it might not be covered if they try to do a reprogram cuz they will see a non gm program code. i know this cuz i work at a dealer and have seen warranty alerts for aftermarket programming.

 

Well...Hmmm... Ima try to clean up the throttle body, MAF and so forth, throw a new filter on and see how she runs. as far as cleaning out the FI how do our cars react to seafoam? or the b12 chemtool additive?

 

not to sure i work at a dealer and use this gm **** what works awesome u have to run the car on this stuff straight. u have to start the car the pull out the fuel pump relay the start and run it w/ this stuff.

 

I seafoamed my car when I got it and it never gave me any problems. Just make sure you don't hydrolock it with the stuff.

 

Check out the How-to section. Hatrickstu has a write up on it



Its most likely a dirty MAF. that wont always throw a code.