Question on race fuel?

Question guys, I have been running boost now for a while (previously owned some Evos and now a GT TVS SC) and never used race fuel.
I'm currently putting about 650ish rwhp at 93oct, and was wondering what could be my expected gains with race fuel tune? Also, would I need to increase fuel pressure (injectors, fuel rail,race pump etc.) to get to incremental power levels independently of the fuel used?

I have a 17 GT roush S/C with phase 2 upgrade (BAP, colder sparks, 80mm pullley). Also, I've already upgraded OPG and CS.

Thanks in advance....

You wouldn't need to do anything to the fuel system unless going to Ethanol of some sort. Just tune would be able to utilize a little more spark and cam timing to take advantage. Don't expect huge gains tho. Just a little safer on race fuel especially against heat from pd blowers.

Depending on which fuel you need to retune because different fuel have different stoich

What's your reason for not going E85? My race fuel cost me $1.48/gallon this afternoon. I have your same set up and 741whp.

TexasGT said:

What's your reason for not going E85? My race fuel cost me $1.48/gallon this afternoon. I have your same set up and 741whp.

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I would love to, but we dont have it that available here in puerto rico....

estebanvdt said:

I would love to, but we dont have it that available here in puerto rico....

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I've always thought about mixing c16 with 91 like 50/50 and tune on that that's probably the best route if E85 isn't available.

5.O said:

I've always thought about mixing c16 with 91 like 50/50 and tune on that that's probably the best route if E85 isn't available.

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Wouldn't recomend that. C16 is a leaded fuel. Go with an unleaded like 110.

I would expect gains of 80-100whp depending on tune/fuel.

Jay-rod427 said:

Wouldn't recomend that. C16 is a leaded fuel. Go with an unleaded like 110.

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I'm aware that leaded fuel will kill cats which I dont have and screw o2 sensors quick. But is there anything else leaded fuel would do other than these?

Pretty sure its not good for valve seats and guides,but probably depends on how much u use it.

Tommy V said:

Pretty sure its not good for valve seats and guides,but probably depends on how much u use it.

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Isn't the opposite for old cars you don't put unleaded? I'm interested in that, could you explain please.

Using unleaded in the older cars the lead actually help cushion the valve seats so to make them last longer,didnt have the tight emissions we have these days also.Todays cars have harden valve seats and dont need lead to help preserve them,along with the fact that alot of emissions crap on our cars will not last with leaded fuel as,cats,sensorsSo yes the older cars did and were setup.to run unleaded fuel.