Gtr

[donkeypunch]

Hey as my last 2 posts, RB26 2860-5's, LINK G4 and supporting mods. from cold as boost increases starts shuddering, missing, sounds like backfiring in manifold? have put new plugs in it, fixes problem for about 100k

took back to mechanic (500k away) who set up cold start, brought it home started up, worked once, now running like crap again

this dosent make sense. why when boost increases does it run like crap, but changing plugs fix it????????????

im over it now, the car is for sale but would like to maybe figure out WTF is wrong with it?

cheers

oh yeah been back on dyno again to check all running sweet

this problem took about 3 months (4000k) to rear its ugly head

Edited June 12, 2009 by donkeypunch

[Moodles2]

Are you running boost while the engine is still cold?

[MrStabby]

What do the plugs look like when they come out? Photo plz

[R.3.2.G.T.R]

running aftermarket intake piping??