So I recently went e85 (stage 2 e85 oft) on my car a few days ago, and I was having issues with my car idling (was happening with 91 as well but wasnt as bad), so I thought maybe the throttle body was dirty, so I took the intake tube off and discovered a bunch of gunk all over the back side and around the rim of the throttle plate. I took some throttle body cleaner and sprayed it down and wiped it up till it was clean. Did a reflash to reset the ecu and that idle issue went away.
But now when I drive off from first and then press my clutch in at around 2500rpm, the rev will hang there for almost 5 seconds before it even starts to go down.
my cars throw out bearing also started to make a supercharger type whine noise the same time this happened. Idk if it is all coincidence or what. Maybe I messed something up on my throttle body? I even noticed on oft after resetting my ecu, my throttle % was reaching 99% where before it was barely hitting 90%.
Things I tweaked on the e85 tune: cold start, tip in enrichment, and radiator fan. Not sure if any of those would have caused this weird rev hang issue. It’s been driving me nuts and idk what to do.
Someone help me!