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My Z is running fabulous and has great compression. It has all new parts with the fresh motor build but the black soot on the backend just sucketh.. I changed over to 740cc injectors with no cats and straight 3" exhaust. I am wondering and assuming that all you guys with high hp, no cats or precats and big injectors are having the "soot issue?"
I talked to Greg at Specialty and it seems to be common amongst our cars and even the GTR is much worse from what I understand but I am wondering if it is causing any issues for you guys with similar setups internally like carbon buildup, plug fouling issues, etc?
Again, the car is running great but the soot is a pita!! I know putting the cats back on would help but wondering any other tricks and/or problems that come along with running rich like this..I believe the carbon buildup internally ends up creating more compression which could not be good also....Any info would be appreciated. Thanks..
  ****CURRENT DYNO RESULTS AS OF 11-18-13 SPORT 700BB TURBOS- 514 RWHP/468 FT TORQUE ON 93 PUMP GAS @ 18 PSI Wiseco 87.5 mm pistons, head work ****OLD DYNO RESULTS: GT28R TURBOS- 438 RWHP ON 93 OCTANE PUMP GAS/STOCK MOTOR****
****472 RWHP ON 110 RACE GAS******************************* Also own: 2001 Harley Davidson Custom Softail Deuce
1993 Nissan 300ZX 2+2 NA
1997 Ford Explorer XLT V8 AWD
2000 Ford Explorer Eddie Bauer XLT
1991 Yamaha YZ250
Sold:
1985 Ford Bronco 3" lift 35" tires
1986 Yamaha FJ1100
1986 Nissan 300zx na(Z31)
1979 280ZX 2+2
1972 MGB
1968 Pontiac Firebird
1972 Nissan 240Z, dual webber carbs, etc
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