Quote:
Originally Posted by Solid_Sim
Wow thanks for the explanation! 
In the scenario that I don't want to spend on headers and really don't want the much louder noise from them, you recommend I go with a CAI + 2.3 upper pulley? How much does a speed shop usually charges to port a TB?
Considering I'd do these 3 upgrades, would I be near 700 crank HP with a tune? |
Yes CAI + 2.3 upper is perfect and doable on stock cats/manifolds. As for the throttle body, just order a Katech or Tony Mamo LT4 throttlebody. Katech's are around $275 I think and Mamo's are about $390 or so. If you are interested in porting the blower and snout, you'd want to get the larger 103mm Throttlebody from Nick Williams or Katech.
CAI + 2.3 Pulley + TB + Tune should be about 610-630 RWHP to the tire. So yes around 700 BHP. I don't want to give you false hopes, you may get more than that, you may get less depending on air and dyno. It will be a SIGNIFICANT gain no matter what the dyno says. If you port the blower and snout and get the 103mm TB, I'd say 650 RWHP at least. Add headers to either and expect a 30-40 RWHP gain.