1991 twin turbo, Rich fuel/ smoke

[Dmuzial]

Hey everybody,I'm working on a project 300zx with my friend. The car had a jspec motor installed. It has new nismo 555cc injectors, Turbonetics t-28 turbo's,Ashspec Ecu, Safc II and a greddy profec boost controller. transmission is brand new, the motor hasnt had more than 100 miles since in came from japan and the chassis has 125k. Heres the problem were running into. The right side back (from the exhaust pipe) is smoking white thick smoke. The engine runs super rich untill you push on the throttle hard. The engine will run untill you let off, and then it runs too lean and begins to stall. The guy we bought it from haddnt dinoed it and im thinking that its a problem with the engine running too rich and the computers just need to be tuned. But! the smoke is only bad out of the right side bank. The left smokes a little but only as it compensates fuel for the right. Im gonna run a diagnostic this weekend, but i was wondering if people have seen this before and what to look for. It might be an ignition timing problem because of unprogrammed upgrades. Any sugjestions would be so helpful cause if i dont get it running in 1 week, my parents are going to sell it so i can pay back the money i owe them (the car isnt the only thing stalling) i can give you any info you need, so pleeease help lolSincerelyDustin

(ps please dont make fun of me for being a nube if this is an easy fix lol )

[180fan]

so you guys get the ecu programmed to run on 555cc injectors from the 370cc's?