Originally Posted by
Yukon6.2
Good power,when you put your foot in it it rolls coal,which i imagine is the Kennedy tune.A Holset may get the call after this last work is a fading memory.
Is it "rolling coal" all the time you have your foot down, or just at first until the turbo spools up? The stock GM turbos spool up pretty quickly and then most of the smoke should clear up. If it smokes all the time, the wastegate is not functioning properly and is allowing boost to dump and not build up.
My HX35 seems to have a bit more turbo lag than the stock GM4 did. Much more smoke at initial throttle up until the turbo spools up. It's like "rolling coal" for a few seconds until the turbo catches up. Mostly noticeable when towing.
Casey
1995 K1500 Tahoe 2 door, 6.5LTD, 4L80E, NP241, 3.42's, 285/75R16 BFG K02's; 1997 506 block; Kennedy OPS harness, gauges, Quick Heat plugs, and TD-Max chip; Dtech FSD on FSD Cooler; vacuum pump deleted, HX35 turbo, Turbo Master, 3.5" Kennedy exhaust, F code intake; dual t/stats, HO water pump, Champion radiator; Racor fuel filter