Rey
Registered Member
This is to supplement the discussions on reflashing the ECU.
At wide open throttle the motor defaults to open loop and dumps in all the fuel it can resulting in an over rich mixture of around 11:1 or less. Ideal is about 12.8-13:1.
Stock fuel pressure is regulated at 55 PSI. Reducing this fuel pressure by small amounts would restrict fuel at open loop. The motor would still compensate for reduced pressure at closed loop. Reducing fuel pressure is an old trick, first done in mid 80s to fuel injected Corvettes. I remember www.TPIS.com as marketing an adjustable fuel pressure regulator. Adjustable fuel pressure regulators are readily available. Perhaps someone like Motorsports Authority will develop this product.
At wide open throttle the motor defaults to open loop and dumps in all the fuel it can resulting in an over rich mixture of around 11:1 or less. Ideal is about 12.8-13:1.
Stock fuel pressure is regulated at 55 PSI. Reducing this fuel pressure by small amounts would restrict fuel at open loop. The motor would still compensate for reduced pressure at closed loop. Reducing fuel pressure is an old trick, first done in mid 80s to fuel injected Corvettes. I remember www.TPIS.com as marketing an adjustable fuel pressure regulator. Adjustable fuel pressure regulators are readily available. Perhaps someone like Motorsports Authority will develop this product.
