After tuning my car with the Diablo Tuner I now have a squealing noise that comes from my belt. It only happens when I have it fully gassed and I go into red line at about 6,000rpms. The noise happens when it's shifting from first gear to second from the high rpms it doesn't do it form second to third could it be that the belt tensioner is wearing out or what could it be.

Thanks,

Mike

 

have you tried having it idle with the hood up and manually reving it? That will help hear where its coming from

 

Actually I didn't think of that but I will do that. Thanks for the suggestion. I will let you know how it goes!

Mike

 

ok let me know