I have a '98 NSX with low-boost Comptech Autorotor Supercharger.
I recently had the Walbro 255LPH installed together with the heavier wiring kit from SoS.
Already installed was a Zeitronix wideband Lambda sensor and SoS Fuel pressure gauge in the engine compartment.
I also had the Zeitronix boost- and AIT sensors installed to be able to measure those values, just for safety.
I noticed that my fuel pressure at idle is higher than before. I am not sure, but before it was something like 43 PSI at idle with a warm engine.
Not it is sits there at a steady 50 PSI, even at 900 RPM. The engine is running rich, because I can smell the gas. When I go into full boost at high RPM and high speed, I noticed a cloud coming from my exhaust, feels like the engine is throwing out excess fuel (??).
My lowest recorded AFR is down to 9.6 at 0.49/0.50 Bar of boost (7.1-7.25 PSI).
Which fuel pressure should I be aiming at when the car is idling ??
I recently had the Walbro 255LPH installed together with the heavier wiring kit from SoS.
Already installed was a Zeitronix wideband Lambda sensor and SoS Fuel pressure gauge in the engine compartment.
I also had the Zeitronix boost- and AIT sensors installed to be able to measure those values, just for safety.
I noticed that my fuel pressure at idle is higher than before. I am not sure, but before it was something like 43 PSI at idle with a warm engine.
Not it is sits there at a steady 50 PSI, even at 900 RPM. The engine is running rich, because I can smell the gas. When I go into full boost at high RPM and high speed, I noticed a cloud coming from my exhaust, feels like the engine is throwing out excess fuel (??).
My lowest recorded AFR is down to 9.6 at 0.49/0.50 Bar of boost (7.1-7.25 PSI).
Which fuel pressure should I be aiming at when the car is idling ??
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