Quote:
Originally Posted by Dzmitry
Year: 2018
Mileage: 45K
E85: 16K
No problems, drives amazing and smooth. Flex-fuel Ecutek tuned with several revisions for a little extra perfection.
Unless your tune is not well optimized, it may be an odd feel you have for the way the car now accelerates. One of the things I noticed is when I'm not running E85, The pull post 3.5-4K RPM is very strong and really makes the car feel like it's coming alive. This sensation kind of goes away when I'm running on ethanol. I think much of this is due to the change of the curve, with the lower end torque actually being quite a bit stronger, making the overall torque more even. This "evenness" doesn't give the stronger pull sensation, but rather a more simple acceleration feeling. Regardless, the car is much quicker throughout the full rev range on E85, but the feel of acceleration differs for sure and in some way it bugs me a little too. When going back to 93, I enjoy the feel of the pull post 3.5K RPM. E85 just doesn't have that same feeling as it is already pulling pretty good from lower RPM's.
That's just my thought on that. Again, it may also be that your tune isn't quite up to par, and of course, your tune could be optimized differently in general. I'm not too familiar with how well OFT's tune is on E85, but judging by the dyno pulls I've seen from OFT, it seems pretty good.
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I have in the past also noticed that e85 doesn't give that sudden punch in acceleration once I hit 4.5k rpm. When on the stock tune, it almost feels like vtec kicks in at that point lol.
E85 probably does pull harder at lower rpms, but for some reason gas feels like it has more grunt from a stop to me. Could be because E85 tune is smoother giving me the impression that it is not pulling as hard. Going to test it again on my next tank.
I'm also assuming OFT tunes are geared towards UEL headers, which could explain what I feel since I have Tomei EL headers. Might consider ecutek if it wasn't for California's new law that requires stock tune for SMOG.
