Results 1 to 3 of 3

Thread: Ethanol Content Fuel Flow Multiplier

  1. #1

    Default Ethanol Content Fuel Flow Multiplier

    I have an HP ECU and all inputs are being used. I don’t plan on installing a flex fuel sensor in the near future. I measure the ethanol content of the fuel in the tank regularly. What would be the easiest/most sensible way for me to quickly make changes to the Fuel Flow Multiplier in the software based on ethanol content? Thank you.

  2. #2

    Default

    When Closed Loop is enabled and the ECU is trying to achieve the Target A/F Ratio and a Fuel Flow multiplier is in use, what occurs? Does the ECU apply the multiplier to the amount of fuel that would normally be required to achieve the Target A/F Ratio? Thank you.

  3. #3

    Default

    The multiplier is applied immediately and Closed Loop (& Learn) continues to try and reach the Target AFR. If you didn't add anything with the fuel multiplier the Target would still be achieved, but the Closed Loop Correction would be high (engine running). And remember that Closed Loop has no affect on startup, and warm up, and AE fuel, whereas the multiplier does.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
About us
Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR® Sprint® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Headers, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.
Join us