Virtual Flex Fuel Sensor - What is needed?
04-08-2018, 03:14 PM
#1
Teching In
Thread Starter
iTrader: (3)
Join Date: Dec 2013
Location: Houston, Tx
Posts: 47
Likes: 0
Received 0 Likes
on
0 Posts
Virtual Flex Fuel Sensor - What is needed? I've got a flex fuel 5.3 out of a 2012 Tahoe that I am turbocharging. Ive used all components that are rated for E-85.
From looking in HPTuners, it looks like this ECU has a Virtual Flex Fuel Sensor. I am using an aftermarket harness from PSI Conversions.
I plan on initially running it on 93 octane pump gas, but I'd like to be able to run E85 later.
What do I need to do to tune it for pump gas then let the Virtual sensor compensate for E85?
From looking in HPTuners, it looks like this ECU has a Virtual Flex Fuel Sensor. I am using an aftermarket harness from PSI Conversions.
I plan on initially running it on 93 octane pump gas, but I'd like to be able to run E85 later.
What do I need to do to tune it for pump gas then let the Virtual sensor compensate for E85?
05-03-2018, 10:41 PM
#2
If you are doing boost then I’d recommend running an actual sensor because (short down and dirty) the pcm reads fuel trims after a fill up and guesstimates ethanol content on that. I added a flexfuel sensor to my Blazer and when I had the turbo on it was comforting seeing minimal fuel trims when I’d switch back to pump gas for road trips.