[CW3SF]

I’m getting my car re-tuned (remotely) for sea level now. My tuner has me dialed in for 93. It’s a whole different animal at sea level vs Denver. Will start adding ethanol next week. It’s gonna be interesting to see how much E my set up will safely run. Will be interesting trying to get traction with the extra hp from the ethanol. It’s rather sketch already on 93 with PS4S tires and cooler weather.

[KILLA BEE]

Originally Posted by laynlo15

I'm running E65 to 70 and that's what comes out our pumps here in Mid Missouri so I don't have to do any mixing. Running 23 degrees including the flex fuel advance, Afr is right at 12.5 on 10.2 or so boost. I also have toohighpsi port injection and running a JMS booster for extra voltage. No issues with injector pulse or low side fueling on stock Lt1 High side and Lt1 injectors and stock in tank pump which appears to be Lt4 pump. Maybe.

On the SS you can run Full 85 with the fuel sensor with nothing extra. I had 2 OF THEM
The only SS that has that Lt4 pump is the 1Le model

[KingLT1]

Originally Posted by KILLA BEE

On the SS you can run Full 85 with the fuel sensor with nothing extra. I had 2 OF THEM
The only SS that has that Lt4 pump is the 1Le model

He has a Magnuson on his car. Definitely cannot run Full E85 with a supercharger and stock fuel system on a LT1 car.

And I am not sure about that. GM made some changes, and it appears all of the newer years 2020+ appear to get a different tank pump vs what the 16-18's had. 2019 was the transition year where some did and did not have the LT4 tank pump. But yes, in the early years only the 1le received that pump.

[MartinLe]

Originally Posted by Camaro1973

You can run them leaner with ethanol. Ethanol has the ability to pull hot air out of the cylinder so you dont need as much fuel.


Anywhere from 82-85 i think is acceptable. In this range makes the most power.

I am fairly confident in reading my logs and discerning whether or not the motor is happy. Is there anything different I should look for other than fuel pressures and IPW’s in the same range as with .83? I am not ready for a new short block