Mr_4.0

high flow cat and NO tune = overboost!

you should not have oil leaking from the VCT sensor

usually you want stiff fronts and a semi stiff rear as a combo.

Why a solid firm centre and stock sides now? That is the opposite to what you actually want for longevity with a bit of power. Surprised you haven't had a bolt snap with that setup! Don't think that "pre load" theory is correct either... first I've heard of that!

Personally, I wouldn't cut more than the first section off. Definitely don't remove them.

KAAZ no good for a street car. Go with the truetrac.

at idle? or under load? At idle, on the gauge, its extremely steady. Never watched it under load, but lambda is steady under load.

to be honest...no

Im running twin DW350 pumps on my surge tank, FPR2000, standard rail, and no mods to return size at all. Can set base pressure well below standard.

id be putting everything back to stock so you know where your at. All parts and tune.

so you have a 15psi tune with standard injectors and pump? ouch!!! that's not a good thing! valve springs if not done will be an issue at that level too.

I can this car throwing a leg out sooner rather than later....

could be many things... sounds like you might have a valve spring issue in there as well though... however, what fuel system is this car supposed to have? what injectors? what pump? do you have a boost gauge? what boost is it hitting? what boost was it tuned for?

will be revised part

factor about 800-1000 bucks for a good tune