Joey L’s R33 GT-R with DP HFS-4

[RICE RACING]

Originally Posted by BumpyBCNR33

Thanks for the feedback Peter! I have read lots of your posts here and may have picked up a few tips! I saw your R34 project before. I think it was a RB30 stroker with a syvecs/life racing? Sick build.

If you don't mine me asking, how much boost you think this setup can handle, using 91AKI pump gas with Aquamist? CR is 8.5. I haven't pushed it at all just to preserve the engine.

You will have to establish that on the specific parts combo you have and the settings you choose. On the R34 with OS Tomei 3.15 engine ran above the 'consumer advertised' limit of the EFR9180 turbo pegged at 126k rpm which is possible using the turbo speed control system in the Syvecs/LR ECU.

[BumpyBCNR33]

Ah I see. I have the turbo shaft speed sensor as well. I think at 1.6bar at 8000rpm I have around 111k rpm. Max speed rated at 127krpm. same as 9180. Some head room but close to max out.

I only use the turbo speed to reduce boost solenoid output when its approaching shaft speed limit for safety. Not sure if there is a way to tune fueling with turbo speed input.

I guess my question was if I will have detonation/knock as limiting factor

[RICE RACING]

9180 is much larger turbine, have to look it up to be 100% but 117k is the limit for that one from memory.

You have the right CR for petrol, so its just down to how much WM you use and other details on your engine. You may run out of turbo before you face any knock limits.