[Shotimes] Slight Detonation Issue

[Carl Prochilo]

When you say 60K, was that just the valve lash adjustment or did you have
timing belt, water pump and CPS replaced?  BTW, on your car, 60K is really
100K.

Cheers,
Carl Prochilo
92 Ultra Red Crimson

> Hey Everyone,
>
> I have noticed lately my SHO is detonating ever so slightly at high rpms
> under
> a heavy load, like climbing a steep hill.  I'm not really sure what the
> problem is, but I'd like to track it down with all your help if I can.
>
> The car has been run on nothing but premium from Chevron and Union 76 from
> the
> time I bought it at 48K, the full 60K was performed right at 60K miles,
> and
> the car only has 99,750 miles on it right now.  I have no "Check Engine"
> light
> and the car runs great, but I did run the codes.  Here's what I came up
> with:
>
>     KOEO:    111
>     CONT:     211, 521
>     KOER:    542
>
> I know Code 542 is a common code that's no big deal, but what is a "211 -
> PIP
> circuit failure" and a "521 - PSPS Circuit did not change states"?  Could
> either of these codes be causing my detonation issue, or should I look
> somewhere else?
>
> Any info would be GREATLY appreciated!
>
> Thanks in advance!
>
> Josh Salaets
> 95 SHO MTX (See it at: www.cardomain.com/id/sh0gun)
> 85 Omni GLH-T (Yeah, it's fast)
> NWSHOC Member
> Aloha (Portland), OR
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