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  • 1 year later...

Just had it pointed out to me that my sard reg probably isn't E85 safe. Anyone had one fail? I can only assume that if a lot of you are using a stock RB reg, that an aftermarket one would have a good chance of withstanding problems from E85..

I put the Sard FPR in. I was a bit worried about it at the time hence why i started this thread. Tbh, I wouldn't worry about it too much, It'll be fine.

Like I said, I've had it running straight E85 for a year, no problem.

Had mine for 12months.. Over 10k in kms

Running both 98 and ethenol, no problems

Has been sitting with ethenol in it for quite some time now.. If its stuffed when I start it next month I'll know why

  • 3 weeks later...

Regs don't flow 'Power', they bypass fuel to hold a certain pressure.

If you can run your desired base fuel pressure with the injectors off and pump running, then the reg has enough flow. Stick a larger pump in, and it might not be large enough...

Sorry don't understand that answer. Bought a Tomei Type L hopefully it's sufficient but still interested in a simpler version of you answer if possible

If your fuel pressure spikes too high you need a larger regulator, it is not dependent on the power your making.

Kind of like the size of a wastegate on a turbo. The more boost your running the smaller the wastegate can be as it is bypassing less air from the turbo to maintain that boost pressure.

Edited by Marcus89

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