RXRodger

iTrader: (2)

What range fuel pressure gauge should I order?

I need to install a fuel pressure gauge in my NA SC300. Most gage suppliers offer it in 2 ranges. I know this is probably a simple question just something I have never fooled with. Hope to learn something. Any help is appreciated.

LoveSCs

iTrader: (2)

stock fuel pressure is about 43psi with vacuum disconnected at idle (therefore vacuum = 0). Being NA, you should never see fuel pressure above that value. It would be a different story if you were turbo, in which the fuel pressure regulator adjusts fuel pressure to boost. Every +1lb boost, FPR adjusts fuel pressure +1lb. So, for turbo, the most you might see is in the 70's, if boosting 30+ lbs

RXRodger

iTrader: (2)

Thanks, only had 0-30 and 0-100 available in the series gauges I have so ordered the 0-100.