Originally Posted by Daz-rst
could removing the cats from a 4x4 with a t34 cause the turbo to surge???
ive had 3 cossies on t34s with free flow exhausts all pretty much standard engines and none of them surged although they all had .63 rear housing so boost was late. might be possible on a .48 exhaust housing as there be loads of volume of air in low revs. what exhaust housing you got ?