how is your fuel system setup? injector size - primaries, secondaries, additional injectors, what fuel pump or how many and what ecu are you running?
i will be going single in the future but my injectors are maxed out now so i will need to upgrade. i might as well prepare the fuel system for that. unless, it is really necessary, i'd like to keep the injectors in their stock locations. i hear that 1200cc-1300cc is the biggest...is that enough to support, say 15psi on a t-78?

toy

 

850cc primaries, 1600cc secondaries, sx fuel pump, paxton regulator, haltech ecu. http://www.deadpig.org/93/mods.html

 

550/1600cc, Walbro pump, SX regulator, -6 lines, FP gauge and a Haltech E6K

i think Jim Swantko did 450rwhp with 1300's and a T-78..not sure ask him

 

I am running 660/1200 injectors
Denso fuel pump, SX fuel regulator, and PFC along with a AVC-R for boost control.

regards

Rick
https://www.rx7club.com/vforums/atta...=&postid=98665

 

550cc/1200cc
Denso upgrade fuel pump
Stock pressure regulator
Haltech E6K

But Now I wish I had bigger injectors. At higher boost on the track I am as close as I want to be in terms of maxing out my current injectors.

Should I get bigger injectors? 850cc primaries? Or should a bet a better pressure regulator?

Cheuk

 

550/1600cc, Supra fuel pump, SX FPR, Haltech E6K, T78

 

I have 850's and 1600's with Haltech E6K,SX pump and FPR,with a T61 and have seen upto 18psi on the track with no problem.But my car is strictly track use only.The idol may be a little to rich for the street,but I'm not to sure my car has only seen tracks like Daytona with this set-up.On the street I ran 550's and 1600's.

 

I have a JC Cosmo engine and previously I had 550cc primaries and 1000cc rochester secondaries. I have 2 x Bosch 4L/min pumps and 1/2 fuel lines. Fuel/ignition is controlled by a HITman tuned E6K.

Car has a Garrett T72 and has made 334rwhp on 12psi at 6500rpm on a dyno dynamics chassis dyno (390rwhp +/- on US dynojet).

With this fuel setup I ran 23psi and C16 and hit 85% duty cycle and the car was underpowered because of a wiring problem. I have just had 1600cc secondaries put in and HITman says that will give me enough fuel for 30psi and 9000rpm with C16

 

Okay Gordon, i don't know what you mean when you said to run the stock fuel pump with the higher flow pump in parallel for redundancy. want to elaborate?

toy

 

sounds like a good idea. i'll have Dave do it next time i'm down there, 9/13-14. can't wait to get on that dyno. maybe i'll see you there, gordon.
by the way, how labor intensive is it to convert to a single? i mean just the turbo kit installation itself, not including tuning.


toy

 

ive got 1200/1200, bosch motorsport pump, malapasi FPR, microtech engine management. around 60% duty at 19psi and 407rwhp (dyno dynamics dyno) around 480rwhp on dynojet

 

Heres my mods.