I have at the minute a collins chip, stainless exhaust, radtec twin core intercooler and stage 2 turbo running about 13-15 psi. It does need rolling roaded which will be getting done in the near future when I have the time. If I turn the boost up any more than 15psi I get detonation so do I need to get myself a fith injector?

Cheers
Dave

 

Not nessesarily. The det could be down to wrong spark plugs or excess ignition advance or hot spots in the bore.....excess dynamic compression...

If you can hear it then the det must be very bad (det is meant to be outside or just on the edge of the lower frequency limit for human hearing. A dog could hear it though. Don't think a labrador would be any good setting a car up though!). I would avoid running it on boost until you can get it checked out.

 

Thanks for getting back to me. Gonna get it rolling roaded ASAP.

Cheers
Dave