[oldman]

Originally Posted by Lemosine

My main thing is E85 compared to my normal pump tune it seems hardly any difference. Im wondering if they tuned me for pump and didn't tune me on E85? maybe they just activated the sensor. I would assume if so you can still run It with the tables already in the computer. I was also told I made 504HP and that really confused me because with the mods I have I expected 460-475 maybe? Also this is a HUB/Chassis dyno and is known to read lower than a Dyno Jet and a Mustang Dyno, its called Mainline popular dyno in Australia. I have noting against the shop they were all nice and respectful seem to work on a lot of LS engine cars. Awesome guys, just confused I guess and sorta needed to vent. I kinda was thinking if you have 504 HP would you lose traction going WOT in 2nd gear maybe in mid RPM range or at least chirp the tires?

Hub dynos read higher in general because there is no loss via the heavy tires and friction to the rollers. Since you can't race dynos, only a dynojet which measure actual HP needed to spin up actual rollers yields any HP that can be though about as universal. All these eddy current dynos (using programmable electrical loads) can spit out literally any HP reading. Some makes sense for instance there are Bosch dynos that can measure drivetrain friction, this can be added back into the dyno to yield true crank HP.

Ill say this E85 outside of a cam is the single biggest power adder NA, so either your sensor is not working or the tune is not. You should be able to check you HPTuner software and there is a read out for E85 content.