Exhaust soot on cement

89-LX

89-LX

Forum Member
Never had this issue pre-turbo, but after putting the turbo on with a dynomax race bullet and a turn down after,, the car leaves a black soot exhaust on the cement. The wife is getting pist at me, that I'm "ruining" the driveway. It seems like it happens more when the car is cold and first starting up. So when I pull the car out of the garage, it leaves a trail behind me for the first 10 feet or so.

Is this just a by product that will never go away due to the turn down? Could this be corrected if I changed the turndown, to say a 45 degree angle to the left or right? It's a single exhaust system.
 
Sounds like your tune is really, really fat at idle. What all changed besides the turbo? ECU, injectors?
 
Dunno. If it runs good otherwise, then that is a product of the tune. :dontknow:
Maybe you do need to turn the tip at an angle.
 
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