Cobb stage 1 aggressive e85 mix

[wsninetyone]

We only have 91 in CA so I was thinking of mixing e85 with 91 in order to boost the octane level to where I would be able to run the aggressive map. Is it safe on an otherwise stock car to run about 30% ethanol?

[The Wind Breezes]

Yeah except Cobb has now taken a back seat to MHD you should check it out.

[all4bspinnin]

Originally Posted by wsninetyone

We only have 91 in CA so I was thinking of mixing e85 with 91 in order to boost the octane level to where I would be able to run the aggressive map. Is it safe on an otherwise stock car to run about 30% ethanol?

Don't bother. Cobb offers an e30 tune that will be just fine. Its pretty aggressive and enough to put you in your seat. Targets 18 psi.

[wsninetyone]

Originally Posted by CRYA

This is exactly what I'm doing now. I posted about it regarding using with a Wedge Tune and someone was nice enough to provide this awesome calculator so you can get close to E30. Also I believe we're currently on the 80% blend, so not true 85 according to a .pdf I saw.
http://www.intercepteft.com/calc.html

Yea, I think I'm gonna go ahead and try it today. I'm gonna mix about 4 gallons in my tank and then switch to the aggressive map and see how it goes.