RB25 problems

[T-78RX-7]

Recently it has been having trouble making boost ? ?..? Like it makes boost, then you can here the wastegate dump then it has like no power, RPM's don't go up or nothing. I think it might need a new tune.

It has stock computer, GT spec exhaust, T3/T4 turbo front mount thats all that is aftermarket!!

I need this fixed!!

[lilskyline240]

um??? your trying to run a t3/t4 on stock computer and fuel system and cant figure your problem out? WOW

[T-78RX-7]

What size injectors do you think I should go with, whats a pretty good ecu for the rb25??

[Joe]

i honestly dont know what to say...that was very stupid putting a big turbo on a stock engine.

you need a fuel upgrade and ecu upgrade. id recommend a standalone like the PFC, and some larger injectors in the 600 range just because its better to go a little big, than not big enough.

[T-78RX-7]

So like a 660cc injector ?? Are there any cheaper ecu's that would work pretty good with the RB?? I know the Power FC is the best I have one on my FD but there so expensive.

[lilskyline240]

First of all. welcome to nico. Secondly. PLEASE SEARCH!!

a couple places tune rb25 ecu's but its not easyNever use an SAFCor a standalone

those are your options

[T-78RX-7]

Why can't you use a Power FC??? It's the best!!

[silviasgp06]

he said never use a SAFC not never use a power fc. SAFC is an "ok" temp fix for a stock rb25 with stock turbo and stuff, but its not recommended for what you are doing.

...

[lilskyline240]

everything you would ever think of askin about standalones and ecu tuning has been covered 100's of times already. Just search for them