detonating at 10lbs of boost!!??

[AdamD87GN]

I have an 87 turbo t-type with the only mods being jay carter 28-93 chip, walbro hotwired fuel pump, 3 inch mass air pipe and 2.5 inch exhaust. I run nothing but 94 octane in the car and yet I'm getting detonation at only 8-10 lbs of boost....Has this happened to anyone here? I don't have a scan tool yet and I don't really know where to start looking. Is it possible the chip is giving me too much timing? Can I just pull the chip out? Could it be a bad plug? If I can just pull the chip where is it located? Sorry for all the questions but I'm new to turbo buicks and I'm still learning..Thanks for your help....

 

[Turbo__Tim]

Did you just get the car? Maybe bad gas in the tank. High timing is the first thing that comes to mind. Swap a chip if possible.

Are sure about the type of chip it is?

 

[AdamD87GN]

I'm pretty sure about the chip. I did get the car recently but it's been through 4 or 5 tanks of gas already...I don't have anything else to put in it for a chip...

 

[blackbuick87]

How do you know you have knock? Is it audible? You need a scan tool to find out HOW MUCH timing the computer is pulling back. If you just have one of those lights it may only be 1 degree of knock retard.

 

[AdamD87GN]

It's an audible ping. I've had several supercharged cars before so I know the telltale sound of detonation but this is the first time I've dealt with a chip controling my timing. I can't see any reason i should be getting detonation at that low of a boost level.

 

[kevans]

Do the spring cleaning...here: http://gnttype.org/maint/basics.html

Then if you still have problems I'd suspect something in the fuel system. What is your fuel pressure set at? If you have a stock fuel pump it maybe bad. Start with the cleaning and work from there.

Good luck,
Kev