Nissan 370Z Forum - View Single Post - Greasy residual on lower part of exhaust tips. Does the Z get tuned to run very rich

mcwoowoo · 10-08-2009, 10:35 AM

I drove my Z (complete stock) for about 1K miles and noticed that there alot of greasy buildup on the lower part of the exhaust tips. I'm guessing this is resulted from the car running too rich? I would think that stock cars are tuned rich, but that's a little to much right? The AFR would probably be lower then 10 (guessing). Anyone else noticed this problem?

10-08-2009, 10:35 AM	#1 (permalink)
mcwoowoo Base Member Join Date: Sep 2009 Location: SAN MATEO, CA Posts: 22 Drives: EVO9,C350,FX35,370Z Rep Power: 16	Greasy residual on lower part of exhaust tips. Does the Z get tuned to run very rich I drove my Z (complete stock) for about 1K miles and noticed that there alot of greasy buildup on the lower part of the exhaust tips. I'm guessing this is resulted from the car running too rich? I would think that stock cars are tuned rich, but that's a little to much right? The AFR would probably be lower then 10 (guessing). Anyone else noticed this problem?