Originally Posted by lakefx7
Thanks! I agree, I am just a little turned off by the 30hp gain. ~$900 for 30hp?! I talked to both tea and wcch and definetly felt more comfortable with Richard doing the work. I was thinking the n20 would make up for lack of porting which is why I initially assembled them stock. Does anyone have back to back dyno runs ported/ stock?
there are a few threads here that talk about the gains from porting,been awhile but you should be able to find them.i guess it depends on your HP goals,and what your willing to spend.IMO,a good VJ and bowl blend will net you most of the gains from porting in the majority of cases.if you want a max effort deal then of course porting is worth it.if not,i would be more concerned with just making sure the guides are up to par and the valves seal.you might be suprised at how much the OEM VJ job is lacking as far as concentricity goes.remember,the L92s are mass produced and never intended to be used in a high performance application.