Well, I guess it's time I broke down and asked the board for some insight into this nagging problem I've had for more than a decade.
Basically it's an exhaust soot problem on my 86. The stuff just pours out of the exhaust pipes and little drain holes in the muffs, especially when the car is cold, but also most of the time it's setting idling. Leaves nasty black spots under the car on the ground and also on the ground and garage wall near the exhaust tips.
The car runs perfectly, strong, etc. No black smoke, no rich smell, nothing. Just a lot of condensation, and as a result, soot.
As a side note I don't have this problem with my 87 (only a tiny bit immediately after a cold startup, like any car).
The 86's setup:
bone stock motor
vigilante 7 disc
(billet parts) 200R4
PTE44 turbo
MSD 50's
V2 FMIC
Translator +
LS1 MAF
GM heated O2 (AFS-74 I think)
This has been an ongoing problem for more than a decade, and during this time various parts have been added/changed, so I can't pin it down to any particular part on the above list. I think the larger injectors may have something to do with it, but not sure.
The car has almost perfect BLM's, the O2 is extremely active and always indicates that it's working perfectly, and I think it is because it immediately shows any "tuning adjustments" I make in the T+
As I said, the car runs perfectly, except for the soot problem :frown:
Hopefully someone has some insight on this.
Basically it's an exhaust soot problem on my 86. The stuff just pours out of the exhaust pipes and little drain holes in the muffs, especially when the car is cold, but also most of the time it's setting idling. Leaves nasty black spots under the car on the ground and also on the ground and garage wall near the exhaust tips.
The car runs perfectly, strong, etc. No black smoke, no rich smell, nothing. Just a lot of condensation, and as a result, soot.
As a side note I don't have this problem with my 87 (only a tiny bit immediately after a cold startup, like any car).
The 86's setup:
bone stock motor
vigilante 7 disc
(billet parts) 200R4
PTE44 turbo
MSD 50's
V2 FMIC
Translator +
LS1 MAF
GM heated O2 (AFS-74 I think)
This has been an ongoing problem for more than a decade, and during this time various parts have been added/changed, so I can't pin it down to any particular part on the above list. I think the larger injectors may have something to do with it, but not sure.
The car has almost perfect BLM's, the O2 is extremely active and always indicates that it's working perfectly, and I think it is because it immediately shows any "tuning adjustments" I make in the T+
As I said, the car runs perfectly, except for the soot problem :frown:
Hopefully someone has some insight on this.