How much power/spool with..
 

While my megasquirt remains unresponsive i was wondering what kind of power im going to be getting with my turbo set up.
*Greddy TD04-15c turbo (Different compressor wheel than 15g)
Greddy cast manifold
Custom 2 1/2" downpipe swages to 3" all the way back
Magnaflow 3" high flow cat
Summit racing 3" turbo muffler
trust FMIC (like saab)
rx7 460cc injectors
MAF delete
Turbo blankey
2 1/4" intercooler piping

Still to be added is devils own WI


Anyone have a guess on what kind of power/spool rpms id be makin with and without WI

Thanks ya

0

15c probably flows more at a slower speed and becomes inefficent sooner than the g. Or its the other way around. In the first case, you would get boost a tad sooner and make a tad less power than greddy guys. Probably wont be all that noticable. You are thinking about this way too much. Water injection might improve spool a tad and increase efficiency

yea im gonna be autocrossing this car so i guess that might help lol. Any hp numbers guessing?

WI simply enables you to run more timing and leaner afr's....in itself it doesnt increase/decrease any significant power.

I was all set to leave a smartass reply to your n00b question, but your setup is a lot like mine so I'm curious about your results too. A lot of us Greddy guys are making in the 230-250 range hp wise, you will probably be in there.

TD04H-15G (IND)1.625 (EXD)2.187 (TRIM)55
TD04H-15C (IND)1.654 (EXD)2.187 (TRIM)57

If my quick mental math is correct, you'll run out of fuel at by 250whp at 80% duty cycle on stock fuel pressure. An upgrade to 550's should let you realize the limits of the turbo, but I think you're pretty much there. A 2% trim advantage isn't going to be noticeable over a regular 15G and they run out of grunt in the 16psi/250whp range.

Spool will be about 500rpm behind a comparable GT2560 which is the closest I can imagine this to be to a Garrett model. The Greddy manifold is the limiting factor to spool in your setup, so a good guess might be starting to spool at around 3000rpm (or a pinch later), with full spool by 4500rpm. You'll probably run out of grunt in the 15psi range.

A little water injection never hurt anybody, but my reading indicates 18psi is the absolute upper limit based on turbine RPM reaching ludicrous speed.

Oops forgot to add i have a walboro( did i spell that right?) 190 fuel pump if i get above 200 ill be happy and thanks koto for not flaming my nubness

Edit: do they make manifolds to upgrade the greddy?

Being a 1.6, I see about 220whp@14psi for that setup depending on how aggressive you get with timing.

Why so low Sam? Injectors?

You're right Koto, I'll go another 15whp as he's got access to 92octane... but it's still basically a Greddy turbo/mani on a 1.6. The bigger exhaust will help a bunch. In the end, it'll come down to how much timing he wants to run.

235whp@15psi seems doable with a fully tunable ECU on that turbo/mani combo.

Nice. I only hope i can get to spittin game at my ecu. Right now she aint hollerin back and i dont know why. :jerkit: