what to do?

[HBM4G63]

I just bought a 1990 GSX. I have intake, 3" exhaust, fuel pump, manual boost controller, and a boost and A/F gague. The car runs a 13.7. What is my next step?

 

[L2RTSiAWD]

DP,2G exhaust manifold,IC pipes, You have a bunch of options at this point.

 

[GSX90]

I'd go in order of:

Egt gauge-to monitor high boost ex. temps
Fuel Controler-(SAFC) to richen things up
Bigger injectors-550s or 660s if you're planning on huge turbo
Stronger clutch-to hold the power

the list goes on and on.....

 

[HBM4G63]

I have a full exhaust. Buschur racing downpipe, no cat, thermal cat back (all 3"), a fuel pump and a manual boost controler. I was thinking of getting uips with a greddy type s bov and an afc. what do you guys think. The turbo set up br-57 and a buschur racing intercooler.