mods are XP cam (and supporting valvetrain mods), headers, thermostat, plugs, N* TB, LQ4 MAF, and a base tune. this is on a series 3 engine with a gen v.
is the 3.25 pulley too much? how should I go about tuning this and scanning for KR when it's all put together? am I better of running a larger pulley with these mods? thanks
I'm using stock SIII injectors with an EP381 (?) fuel pump. Would I be better off running a 3.4 then? IC is out of budget right now
I have a similar engine (N* tv, VS cam, 3800 SC Series III engine, and an intercooler) and am currently running a 3.4 pulley with a conservative tune. The dyno indicates about 300 ft lbs of torque and around 300 HP at the wheels with no knock. I think that I could safely run a 3.0 pulley with this setup and have one in the basement but have not tried it out so far. You should have little (if any) knock with the 3.4 and a decent tune.