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Rb20 More Power

R32/Ta22

By R32/Ta22,
in Engines & Forced Induction

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GTSBoy Grand Master

GTSBoy

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Posted (edited)

what should i be looking for to see if its a stock turbo? would anyone recommend an rb25 turbo. is it a bolt on upgrade and what mods would i have to do to support a new turbo. if it is already an upgraded turbo, how can i get it to spool quicker and come on boost better. im trying to get the car ready for powercruise. also do i need to change the exhaust for a rb25 turbo because i have a screamer pipe i would like to keep. i will try to get a photo tomorrow to see what everybody thinks it is. the skyline is my first fast import so only new to this

Look at pictures on the internet (of stock RB20 turbos - google image search is this new fangled thing that's only been available for the last 6 or 7 years) and compare them against what you see in your engine bay.

Yes, and RB25 turbo is a reasonable thing to put on an RB20. Yes it is bolt on. No, there are definitely better ideas. Have you had a read of any of the umpteen jizzilion other threads on the topic?

If it already is an upgraded turbo then there is very little you can do to make it spool quicker unless you get into tweaking things like cam timing and retuning the ECU.

The fact that you think it has injectors in it and no mention of it having a different ECU and wondering if it will need an ECU is all a bit frightening. If you want to tune it, then YES it will need an ECU. You can Nistune a stock ECU - making it tunable. Best option for a budget approach. No you won't need to tune it because RB20s run quite OK with just the max amount of boost that you can run before maxing out the injectors and AFM. If you're willing to replace those as well, then yes, it will need an ECU.

Edited by GTSBoy

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