First off here my setup:

Engine work : B17 with CTR +.25 pistons w/JE piston rings, balanced cleaned/polished crank, shot peen rods, new rod, main and thrust bearings, new water pump, oil pump and full gasket set….
Also: RS Akimoto SRI, 2.25” custom catback Borla exhaust, B&M FPR, VAFC II, Exedy organic….. the rest is still stock (header, cat, ecu, fuel system….etc.)

Currently at 149.8 whp & 108.4 wtorq. (not bad for a basically stock eng with pistons)

So my question is, what should I do next. Should I spend my next $1 – 1.5K on:

1. Header, high flow cat and RS*R exhaust

Or

2. Headwork (CTR or ITR cams and spring)


help I need some advice….

 

for goodness sake-let it BREATHE. Header, High flow cat, and exhaust...easily 160whp/

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TIroneous &raquo;</TD></TR><TR><TD CLASS="quote">for goodness sake-let it BREATHE. Header, High flow cat, and exhaust...easily 160whp/</TD></TR></TABLE>

after adding the header, cat and exhaust.... will I have to get it dyno tuned again..... I know if I was running stock pistons I wouldn't have to, but with this setup what do you think?....

 

No, but i wouldn't frown on it.