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      01-23-2017, 03:03 PM   #6
ashburyn54
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Drives: f87 M2
Join Date: Jun 2014
Location: dayton

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Quote:
Originally Posted by Zippster View Post
Quote:
Originally Posted by Stage IV View Post
The more I mod my car, the more I think about quality fuel. I've been using Exxon 93 since the first fill-up. It's close by and from my understanding, is a good product. It does contain 10% ethanol though. Is there a downside to this? Will my car benefit any more from gas with zero ethanol? If so, where can it be purchased ?
I think you want to use the 10% stuff within 90 days or so, which should not be a problem. The alcohol in the 10% can absorb moisture, but new cars should be designed to deal with this. If the gas is old it may effect the octane, I think so that could be an issue with your mods.

You could run a tank by tank comparison to see if you get better mileage with the straight gas and factor in the cost, you can google and see if there is a straight gas dealer near you, it might not be worth it if its far.
The m2 on an e30 blend on the stock tune made close to 360whp and alot more torque. Just don't go crazy with it as our HPFP is weak.

That's a back to back dyno on 93. 93 made 320-330whp

30whp bump just from octane.
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