Hey guys I have an 88 TII, with a freshly rebuilt, and street ported motor with RA superseals, and I'm on the stock turbo. now I have an apexi SAFC II and a walboro 255lph fuel pump, i was wondering what size primary and secondary injectors would work best with the rest of my fuel setup in order for me to run 12 psi safely on the stock turbo. I do plan on upgrading to the BNR stage 4 turbo in a few months, and I will get a haltech or microtech when i do upgrade, when i do, what fuel injectors do yall reccomend then?

 

550CC primary, 720CC secondary.

For the BNR, 720CC all around or to be a bit safer, 720CC primary and 1000CC secondary.

 

yea, you should be fine with keeping your primaries and using 720cc secondaries. then when you get the new turbo you can just sell the 550's, swap the 720's into the primaries and get some 850's or 1000's