Upgrading the RB20

[driftjunke]

Well we're stepping up and upgrading the RB20 finally, what is the best recommendations turbo wise for it? We are looking for 350 to 400 hp, I am thinking of running the SAFC2 with a t3/t4 .53ar, 50 trim, should be good for 450. And stepping up to the 550cc injectors. Any opinions?

I'm still getting new to RB's

J.D.

[goofynick6]

Get the t3/t04e .63 turbine, 50 trim compressor, and use this guy's software and buy one of the $180 emulators..you can basically tune the stock fuel and igntion maps, and upgrade the maf and injectors easily.

http://www.engineers.auckland.ac.nz/~lmoo016/

Get a wideband for tuning, techedge is good.

Nick

[Eikon]

this turbo...?

http://cgi.ebay.com/ebaymotors...33742

[goofynick6]

That is the same turbo I have...they have pretty good pull around 15-18psi

Nick

[driftjunke]

Say we steppe dup to the 550's and that turbo, what would you say would be a safe max boost level with that car running the safc2 fior now?it already has a 1j FMIC, and 3 inch exhaust.

J.D.

[goofynick6]

You won't get it to run right on the safc, because the 270's are double the stock size, and safc's are only supposed to be for up to 50% larger injectors. My buddy tried it on his lexus 2jz and it wouldn't work. With the 550's and proper tuning however, you could run 18psi or more.

Nick

[driftjunke]

So the SAFC2 won't control the 550's on the rb20? It controls the 550's on my KA-T fine, no problems running rich.

J.D.

[goofynick6]

Well I just know that people usually try them can't get it tuned down enough and yeah, it runs rich. You can try it, but the safc isn't really a good idea (nobody listens to that advice) for a system that's going to be running big injectors and a big turbo...

[Eikon]

So do you have to use a power fc and commander in order to get to the 350 to 400 hp level?

Sorry if I am hijacking this thread!

I have a lead on a really good deal. RB20/25 Apexi power FC + commander, also IC piping for RB20 and 6 550cc injectors for RB20. All for $1000. Sounds like a pretty good deal to me, but if I don't need to have all that to hit my HP goal, I don't want to buy it.

I am wondering if all that is necessary to get to 350 rwhp. Could I just upgrade the turbo, get FMIC, MAF and exhaust?

If you upgrade to the t3/t04e turbo, do you have to upgrade the injectors?

If you have to upgrade the injectors to get to 350hp at the wheels... do you have to use something like power fc to control it all properly? Or, can you tune / chip the existing ecu to use it?

Ultimately, I just want to be able to take a corvette off the line. But, I am pretty tight on cash and don't want to spend the $1000 on PowerFC and injectors if I can get to 350hp without it.

Thanks

[BoostFab]

Get the t3/t04e .63 turbine, 50 trim compressor, and use this guy's software and buy one of the $180 emulators..you can basically tune the stock fuel and igntion maps, and upgrade the maf and injectors easily.

http://www.engineers.auckland.ac.nz/~lmoo016/

Get a wideband for tuning, techedge is good.

Nick

hey nick, from looking at your sig. you tuned your ecu w/ the aformentioned program and the romulator? are you using any additional piggy-back ?

[goofynick6]

Nope, just using the Romulator and the Liveedit program from that website. That program is enough to get you over 400hp if you want, it is basically "chipping" the stock ecu but you don't have to burn chips, pop them in and out of the ecu and retry, retry, retry...etc. That chip burning stuff sucks, I know from experience. The Romulator lets you tune while you're driving instantly.

Nick

[BoostFab]

Nope, just using the Romulator and the Liveedit program from that website. That program is enough to get you over 400hp if you want, it is basically "chipping" the stock ecu but you don't have to burn chips, pop them in and out of the ecu and retry, retry, retry...etc. That chip burning stuff sucks, I know from experience. The Romulator lets you tune while you're driving instantly.

Nick

nice! i had done eprom burning and emulating on hondata system in the past, so i'm familiar with the process. i like the idea of live edit...real-time tuning. thanks for hte info!