Knocking Problem in 1990 Corvette L-98
Terry
thartman at gte.net
Tue Oct 20 02:09:33 GMT 1998
The Thibodeaus wrote:
>
> I have a 90 Vette with a ported plenum and Performance Resources chip with a
> few other minor modifications. I am having a problem with pinging and have
> been monitoring the engine with an Auto X-Ray system.
What grade fuel are you using? Most of these aftermarket Proms specify
Premium fuel only cause they get a little aggressive with the spark table.
Also - what is your base(static) timing set to? I believe that 6 is
stock for most TPIs....
thanks,
T.
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