Well, We pulled off the Vortec v2 Supercharger and now there's a problems where if my friend is driving around 2200-3000 rpms the car starts to buck and starts to slow down. IF he gives it gas and gets it above 3000 its fine runs great but anytime between there its horrible.

The car was throwing random/misfire codes, He's changed Plugs, Fuel Filter, PCV Valve, MAF Sensor. Wonder if anyone had any ideas before he went out to go buy something else.

Thanks in advance

 

is it a max?
likely he would have changed/altered the ECM for the supercharger, by removing it, the engine timing may stil be set up for the SC???
thats my best guess

 

The guy i bought it from said he didnt change anything for it, he said be bought a pre-flashed one but it messed up the boosting or something...would reseting the ecu fix it or would there be some way of checking if the ecu was altered in some way?

 

I got to see this car...

 

sounds like a coil pack failed

 

Would it still be a coil pack even thought its only happening at 2000-3000 rpms? Also it doesnt do it while the car is in neutral, in nuetral the car sounds beutiful but as soon as you put it in drive it sound like garbage.



And why do you have to see it, not to much special about it anymore...The SC is sitting here in my garage now im actually looking to sell it.