TwinTurbo.NET: Nissan 300ZX forum - I haven't had any plug fouling issues but my rear bumper is
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Subject I haven't had any plug fouling issues but my rear bumper is
     
Posted by Zvil (FL) on April 23, 2014 at 1:08 PM
  This message has been viewed 230 times.
     
In Reply To The black soot is killing me!! posted by eriksu9 on April 23, 2014 at 10:07 AM
     
Message sooty as hell..... I had a custom 2.5" exhaust on my Z before and had the same soot problem till I moved the tips further away from the bumper, now since I put a new 3" catback on it's getting sooty because the tips end before the rear bumper, if I went further away from the bumper or extended the tips out further I bet I wouldn't have any soot just like before....... with that being said, people don't challenge me as often because they know "something's up" (people even ask me at the lights how much power I'm making) not that I like the way it looks, I will eventually address the issue, but for now it serves as an effective street race deterrent. Basically no cats + safe tune + short/close tips to the bumper = sooty bumper. My Z was tuned by Ztuner and the afr's stay in the mid 11's with a high 10's tip in according to my wideband.

____________________________________________________
"The dreaded 2nd windshiled wiper swipe when you turn it off its almost like tis showing you that it's boss, and it doesn't have to stop when you tell it to :("-College Boy

(discussion on ptu relocation)
"No good reason to put it there anyway. -Bernie (NoVA)
False -vorpalZ
False. -Bernie (NoVA)
You're correct, there are 3 good reasons -vorpalZ
False. -Bernie (NoVA)
Wow, right again, just remembered another, make that 4 -vorpalZ"
XD

     
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