90gsx

[bds-123]

I have a 90GSX with 16g turbo, equal lenght headers, and walboro 255 fuel pump. i need some guidance on a way to tune my car its running good all way up to 4 thousand RPMs then its like the boost is ahving a hard time keeping up some siad it needs to be tuned but i cant not find any ecu upgrades the only one's i have seen are really expensive. So should i go with a piggyback sysytem. Just need something less expensive. I know people who dyno tune but they say i need dsm link does any know where to get it at a reasonable price.

 

[tunethis]

Look into the safc2. They can be had for less than $200. What is your boost set at? You may need to turn it down until you get a data logger and something to tune with. Also do a boost leak test to see if you have a boost leak.

 

[MichaelSuch]

Sounds like your running out of fuel or getting knock which will pull timing. If you want to make big power you're gonna have to suck it up and pay the price of ECMLink. Are you using an AFPR with the fuelpump? You're going to overrun the stock FPR with a 255...

 

[mindset]

Look into the ECM/DSMlink or the SAFC II.
Like above, you should invest in a Adjustable FPR.