MY04 has 160~k miles, while it is my biggest worry that the engine will go, I want to do a conservative build with the potential for more power once it does & the motor is built. I'm looking for 400~whp. For now will keep stock trans & diff, no launching.

• Stock clutch w/ ACT pressure plate & competition clutch 9lb flywheel
• Sheepey forward facing manifold (I want to try not having to relocate the battery & this seems the best option with heat wrapping)
• Sheepey charge piping & Bov
• Sheepey Intercooler
• Precision 6266 V-band .82 A/R
• Tial 45mm wastegate
• AEM Infinity 506
• Walbro 450lph (Already have a 255lph in there but have read that won't be enough)
• AEM high flow fuel rail
• AEM fuel pressure regulator
• ID 1700cc injectors
• Friend will be fabricating hood exit exhaust & dump tube
• AEM wideband
• Oil pressure gauge - so I can keep an eye on this & avoid spinning a main bearing

Tuning will be done at Evans Tuning (It's about an hour away from me so I can limp there.)
Sorry if I forgot anything, please let me know if I'm overlooking something. I remember years ago reading about 3mm head gasket & ARP head studs on every stock motor build, but I don't see them too much anymore.

 

Motor will be fine. That's a good clutch option for 400whp. If interested I have an ACT prolight flywheel that I would sell you. The Sheepey kit is no longer available new if I'm correct. Looks like he took it off his website. Overall that kit is okay. Schmuck is the new standard in quality for the S2000 hot and cold parts. 6266 gen 2 bb is a phenomenal turbo, good choice. Tial is good. Infinity is okay from what I've heard. Pretty buggy but since Jeff is tuning you I wouldn't worry about it. Ditch the 1700s and go with 2000s or 2150s. at that size drivability on pump gas will suck regardless, but on ethanol there's no difference, and the 2000s are cheaper. Both gauges are good. Get a boost gauge too.

 

I'm not sure how your turbo compares to what I'm running, but with the ID1700s, Walbro 450, AEM Infinity, PTuning turbo kit, Garret Gen 2 GTX3576, my car made 560whp on E85, 20psi on a Mustang Dyno. Stock block had 150k miles on it and still had great compression.

 

I made 400whp on ID1050X's and a 320 lph pump in my surge tank (stock pump in tank), on E85... Granted that was at 5,000 ft and corrected, but you'd likely be fine with ID1050's with that fuel pump. I pulled up some logs from when I tuned it on the dyno, but none of them had IDC, so I don't recall what it was... probably in the 8x% range. Absolutely DO NOT get the ID2000's. There is zero need for that injector these days and you certainly do not need that much fuel. At most, with your goal, ID1300's would be fine.

I need to test mine without the return, but my AEM will not drop fuel pressure when vacuum is applied, though it will raise with boost 1:1. I apparently tuned it like this, so I have not bothered with it as it runs fine.

For heat management, I'd go with Inconel over a wrap. For your power goals, that's a big turbo.


I have a 56 lbs/min turbo and the boost control at the time would not hold boot up top, dropping to 8ish PSI.