First of all this is what I got. Rtek 2.1, 720cc 2nd and a walbro fuel pump. My question is how much hp is this good for. Reason for this question is because I have a To4e turbo and wondering how hp I can do before I need to get the rest of the fuel system which I'm still planning to get.

 

Not much, maybe 270rwhp?

 

http://www.rx7.com/cgi-local/2ndgencalc.cgi

Tada!

Just watch your Duty Cycles.

 

thanks guys

 

did you rewire the fuel pump? an upgraded pump doesn't do you much good if the voltage isn't high enough.

 

Really? How do I make the voltage higher?

 

Good info on pumps
http://fc3spro.com/TECH/MODS/FUEL/fpump.htm

Good info on pump voltage
http://fc3spro.com/TECH/MODS/preliminary.htm

Good info on fuel pump rewire
http://www.1300cc.com/howto/how2/rewire.htm

Boost-a-pump
http://www.kennebell.net/accessories...boostapump.htm

Good luck, I need to do some of this too...

 

That is saying 311rwhp is possibly @ 100percent.

I am pretty sure FDs running stock injectors(550/850cc) usually don't see past 280-300rwhp range.

I wouldn't trust that calculator.

 

Well, your right, I wouldn't push it... 100% really is an unreal DC though. It says its not exact.
"This calculator is meant to give approximate HP numbers according to the size of injectors utilized running gasoline. We've tried to make this as accurate as possible but considering different fuel, climate, and other variables, we do NOT guarantee these numbers are 100% accurate for your application."
more...
"ECU Controlled Max Duty Cycle is the maximum injector duty your reprogrammed computer uses. For reprogrammed ECUs, please contact your ECU programmer for specs. If unsure, use 80%. The Stock ECU is approximately 58-63%."

It suggest that a 550x850 cc combo at 80% DC would be able to produce 322.8 HP. At the rear wheels that might mean, at 1/2% drivetrain loss, would equal 306 HP.