After I got my blower installed the idal is all messed up at times like when I come to a stop light sometimes the idal goes lower than 700 and may shut off the car. Now would this problem be because of the tune, Iac, or TB. I have the BBK 75 mm TB. I remember before it was N/A i have a setting on the diablo tuner that I can set the idal while crusing to 800rpm and after that it was fine. So what should I do about this?

 

depends. how did you have it tuned? you tune it yourself with a handheld or did you get it thrown on a dyno and had a professional tune it? sounds like you did it yourself with a predator (ick!).

 

A professional tuned it. But this happened N/A also until I had the diablo tuner to fix it. So what I might do is try the IAC 1st since its only a spray and check the hoses.

 

let us know what it is ...i was having this problem except the idle wouldnt be irratic say if i came to a stop the car would just die and it would only happen after being ran hard or even in the middle of running it hard it would die and then it blew up like a week after this started not saying yours is going to blow i was just sharing my story about a similar situation

 

There have been many reports of problems with the aftermarket throttlebodies. If you still have the stock one I would swap it back and see if it makes a difference.

 

Ok folks, the problem was the throttle body. It was machined wrong. So I will be getting an accufab. I had the BBK which could be machined wrong which it was. I hope this helps other folks.