COALMINER,KY

Hey, I have a 2015 auto z-51 corvette with a&a ti blower making 11.5 psi , 17/8 headers x pipe and meth injection. Also have the z06 fuel pump, on stock cam. The car made 671 ho and 616 tq. I was wondering if I could run a mixture of 93 octane and 110 race fuel and bump it on up to 700/ 640 ish with just the race fuel and new tune , and still have just 11.5 psi boost. I would use a handheld tuner to switch the tunes back and forth . Thanks for any input

Patriot Six

Not sure how much you would gain by increasing the octane you're running, but you would need to ensure that your octane blends are consistent with what you tuned it at in order to avoid detonation. I would go flex fuel and you could easily make those numbers and never have to worry about the tune, if e85 is available near you.

Bad Jake28

You would need a tune with more timing to see any benefit to the race gas. Leaded fuels are also very hard on cats/02 sensors.

robert miller

Call it a day really not worth the diff. Now if you do the E85 and z06 pump & inj and a cam yes.

COALMINER,KY

I already have the z06 pump, but it's an hour and a half drive to the nearest E85 station.

Patriot Six

Why not just turn up the boost?

robert miller

OP here no way on driving 90 mins to get E85 so just turn it up if you think the stock block parts will take it.

But if me I would do good pistons & rods. Crank will hold it should for sure. Robert