muffler?

[Tim Rogers]

Brian wrote:
>>Okay, let's assume that I am running rich, how do I correct? Do I need to
dial back the timing? I am running 17* right now on 87oct.<<

No, that should be fine, but maybe a little better octane would be good.

>>I don't think I did an ecu reset when I installed my POP either. Should I
do
an ECU reset, would that help?<<

No, your ECU has learned the correct settings by now.
The main causes of a sooty exhaust would be:
- Bad O2 sensor
- Bad ECU ground
- Vacuum leak
- Faulty ignition

Tim Rogers
-93 NX T-top -needs wiring work
-91 NX - Racecar-to-be
-75 Silverado - Rusty Tow Beast