I currently have a full TBE exhaust and a UTEC. I am thinking about adding HKS 264 or 272 cams. My question is at what point will the stock fuel system start to become inadequate to support further modifications. Thanks in advance for the advice.

 

I believe Al stated 600whp.

A Walbro alone should get you well on your way to that point though.

 

I think he means stock fuel system including the stock injectors. I am pretty sure 370ishwhp is probably pushing the stock injectors hardcore.

 

370ish So looks like my next investment after my cams needs to be a walbro fuel pump and some bigger injectors.

 

yeah, i'd say where you are right now is about the extent of the stock fuel system...i mean of you dont even touch the fuel pump. Now if you get cams, i'd definitly get the walbro and be sure to tune it!

 

i'm at 328whp with a walbro, stock injectors (Vishnu Stage 1+) and the next step for me is injectors/turbo, or just a complete turbo kit

 

I've been told NOT to put cams in w/o a fuel pump!! get a walbro 225 and you will be good to go....dont forget head studs!! It couldn't hurt to get a fuel pressure regulator...

 

So I will definitely need a walbro prior to any cam installationj but the stock injectors should work fine...at least until I add other engine/power modifications.