Just wondering what fuel upgrades i need.What sze injectors do i need primary and secondary.Do i need a fuel pressure regulator.WHere to purchase all of these.
I already have fuel pump.
thanks

 

What pump did you get? How many PSI are you planning on running, and what type of HP would you want?

 

RP performance high flow fuel pump12-19,whatever hp

 

Well I don't have a GT35/40, hell, I don't even have an RX-7 anymore! But... from years RX-7 experience, and of reading posts and peoples setups for years, I would suggest 850cc primaries and 1600cc secondaries.
You may not have to go quite that big on either, but it's better to have a little extra than to be living on the edge. 850/1400 may be nice.

 

just get your stock secondaries ported to 1300's and with a standalone ecu and a good pump ull be fine. 20lbs would be about ur limit though

 

Dont you have to port the primaries?

 

Hey avatar-theif,

You know this from experience?

 

There was a inj size v/s rwhp chart I saw not too long ago, I think that 550/1300's were good for about 400rwhp @ 80% duty cycle (my memory might be off though).

Anyways, if my memory is still good, 20psi on the GT35/40's should be yeilding > 400rwhp and would likely require 1600cc's to run 20psi consistantly.

K