I refitted the standard z22se cast exhaust manifold, downpipe + cat and middle box this morning dunno..
I always downplay power gains BUT my vec feels like it's lost 20 bhp :shock:
so for those non believers, a 4-2-1 stainless manifold, 200 cell sports cat, magnex middle box will add about 20bhp 😃
I'm still in shock how slow it is and how quiet it is :lol:
It still has a ported big valve head, pipercams, ported tb and inlet, k+n air filter..........so how slow is a standard vec 2.2 notsure.gif
I suppose in a few months I will have the answer :lol: