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Who's running on GT25 turbos

Am having a pair installed in the next few days and was wondering what boost I can run without having to mess about with the intercoolers, pistons etc. I'll probably upgrade these later, but I need to sort the ECU and boost first. Is it best to stick with a JWT ECU and boost control upgrade to complement the larger turbos or should I be considering something else? At the end of the day I wanna try to achieve a good spool up, the turbos reaching max efficiency at mid to upper range of engine speed.

 

Any advice very much appreciated.

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    • Featured Replies

    well they can take around 20 psi, but without modded intercoolers and fuelling , dont run more than 14 psi as youll bottleneck your system, and the intercoolers will probably max out (they do so at around 370 wheel BHP

     

    you really need to sort out

    Cooling

    Intercooling

    Fuelling

    Brakes :D when you go this route.

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    It's been said that stock injectors and fuel pump are good for 500bhp ! Is this incorect ?

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    Originally posted by smw1

    It's been said that stock injectors and fuel pump are good for 500bhp ! Is this incorect ?

     

    injectors no, fuel pump maybe.

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    Fuel pump is alledged to be good for 600! Although it might be wise to increase the pressure!

     

     

    Injectors are alledged to have reached their limit at 17psi! So they would have reached their limit at around 400ish mark!

     

    You would be better with a boost controller as opposed to the boost upgrade which I believe are just some welding tips, plumbed in!

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    • Author

    Thanks guys. Sorry to be a simpleton, but am I correct in thinking that the JWT ECU upgrade will take care of the fueling? TBH, I'm not really looking to go beyond 14psi/400BHP at this time (turbos, belts, brakes, ECU etc have already done some serious damage to the wallet!!!).

     

    Sorry TopLess, I did mean to say a boost control install rather than a boost upgrade.

     

    Cheerz.

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    Originally posted by Shahid

    Thanks guys. Sorry to be a simpleton, but am I correct in thinking that the JWT ECU upgrade will take care of the fueling?

     

     

    If you are probably just going to run it up to 17 psi then I think the fuelling will be ok, but your best bet is to email or phone Jim wolf and ask?

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