I currently have a 2.X S4 TII Rtek for my 87 JDM motor. I am currently rebuilding the motor I am going to use S4 N/A rotors, BNR stage 3 turbo, N/A housing from Goopy and port the exhaust port with the EPA2 template from pineapple racing. I currently have 550/720s. And I was using a stock S4 turbo before she when. I am not sure If I will be ok with my current fuel injector sizing. I am leaning toward running 720/1000cc I was told the Rtek could handle that but I am not sure if it is good enough for my setup.

 

Is there a particular reason why you are running N/A internals?..

 

I was able to get them for free.

 

How much boost you plan to run?

 

Maybe 10psi? Not a whole lot. However boost creep can be a problem.

 

Probably for higher compression. Sould probably keep boost down to aboud 10 lbs.

I'm running S5 turbo rotors, 14 lbs, 720/1000 injectors on the 520/720 setting. It runs great, but, if I had it to do all over again I would use 850/1000 injectors running on the 720/720 setting.

No, your setup does not sound like it is too much for the Rteck.

 

Yeah FREE parts is the main reason!. Just like you said keep it at 10psi and you should be golden!..

 

Thanks. I just need that guy to PM me back about the injectors he has for sale,

 

im running 720x1200 and seem to be able to tune it just fine