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R34 RB25det boost 0.5 change to 0.7 bar

JC71

By JC71,
in Engines & Forced Induction

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JC71

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Posted

I find this info on line in a few spots claiming a wire connection change will change standard boost limit, but can any confirm that this is true and any pic or help if it is true?

thanks

 

info below

Standard Boost is 2 stage. 0.5 bar until NVCS (about 4.5k revs), then 0.7 bar until 7k rev standard rev limit. This helps maintain fuel economy and keeps it drivable in slow traffic, the stage 2 boost option is usually the first thing an RB25 tuner will do and makes an easy power gain.

The mod involved quite simply cutting the black wire on the solenoid and connecting this to ground on the car body, forcing the car to stay in stage 2 boost all the time.

There are plenty of detailed step by step instructions around in our forum, and many popular skyline forums out there

JC71 Community Regular

JC71

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Posted (edited)

so an adjustable wastegate would be the better way to go or  a manual boost T setup?

instead of a wire connection change?

 

my first turbo setup I've ever owned so please forgive if questions seem dumb

Edited by JC71

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