I just put in a turbo last night and for the first time ever, I am getting boost. I have an issue when my car is boosting hard. It starts to stutter when Im on the gas and wont let me accelerate anymore. Also, random idiot lights in the dash go off when this happens. I originally thought bad coil, but no codes. What could this be?

 

update: Got some codes P1300 and a MAF sensor code. Changed out the sensor, still had issues. Then got the code for misfire on cylinder 4. I changed the coil and car runs a bit better. Still have random lights going off on the dash.

 

Sounds like your plugs are gapped too big. Did you install a bigger turbo or up the boost? Seems just like when I chipped mine and left the plugs at .032. I got changed the gap to .028 and problem solved, never happened again.

 

This is the exact problem I am having after installing a new turbo. I threw a code for too much boost. Still not sure what is wrong.

 

I'll try changing the plugs. My boost is all stock. K03 turbo. Never had it working since I bought it so I'm not sure if it happened on the last turbo. Here are the codes I got.
P0103 - MAF voltage too high

Misfires:
P0300
P0301
P0302
P0303
P0304
All coilpacks have been changed out.

 

What year is your car? You may have an ICM issue.

 

Gotta be the ICM.

 

I thought about the ICM too. But I put in a new N75 valve that I had lying around last night and it fixed the problem. The solenoid must have been getting stuck.