| It tells me that until you're really in need of those final HP it isn't worth it. You had Stillen ICs and stock piping making 638rwhp, and moving up to massives and 2.5" went to 664rwhp. The difference of 26rwhp also costed ~$1,100 (adjusted for the difference of ($750)Stillens to ($950)Massives) I am NOT blowing off that there is a gain, I'm just saying that looking through the options of lower cost upgrades for gains first is a good idea. In reality it seriously is part of an ideal build:
- Selin dual MAF w/dual POPs
- Dyno-tune (for dual MAF, not 2 brought down to 1)
- Fatty-bo-batty turbos, your choice, maybe new Borg-Warners?
- 2.5" IC piping (with inlets/outlets)
- Massives
- Engorged TB's
- Ported & polished EVERYTHING
- Five-angle valve job
- Fully built bottom and top end, IPP
- Dual fuel pump w/top-feed 2000cc Injector Dynamics injectors on E85
- 3" DPs (divorced if internal wastegate)
- FULL 3" TP mandrel'ed exhaust setup
- Powertrix coilovers of your choice
- SPL suspension parts
- SPL radiator
- Complete new bushings set, OEM
- On and on and on You get the idea.
I'm not saying it doesn't have merits, but you seriously have to weigh it.
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