850whp on 91 octane?

[erikkire18]

I am also in CA and have the hellion TT 62's. tuned by lund and alex maxed me off at around 8.5 lbs of boost when I was logging on 91 octane PLUS meth,made 600 wheel. The 91 here is junk and had false knock until I switched to E85. Now pushing 10-14 lbs of boost, my boost controller gives me the option to pick. 700 750 and 800 wheel all on stock block but did buy a fore return style fuel system. i have a 15 so maybe an 18 will get a bit more boost but i highly doubt 91 will get you near 850 wheel, especially here in CA.

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[Beano]

As said, you're already at the limit of 91. Going turbo will not gain you much more.

You need to switch to E85 (preferably) or a methanol injection setup to make that power no matter what type of FI it is.

I would say with turbos having a higher adiabatic efficiency, plus the fact that it is not mechanically driven, will actually allow for a decent increase in power at the same manifold pressure and fuel, vs a mechanical driven supercharger.

Simply from a theoretical perspective, not advising one over the other, but since he is octane-limited, thought it worth a mention. All Superchargers are indeed not equal...

Cheers,
Beano

 

[ahl395]

I would say with turbos having a higher adiabatic efficiency, plus the fact that it is not mechanically driven, will actually allow for a decent increase in power at the same manifold pressure and fuel, vs a mechanical driven supercharger.

Simply from a theoretical perspective, not advising one over the other, but since he is octane-limited, thought it worth a mention. All Superchargers are indeed not equal...

Cheers,
Beano

This is true, but it will not be a very large gain. Certainly not worth the time and money swapping out the whole system.

 

[Arzane]

I am also in CA and have the hellion TT 62's. tuned by lund and alex maxed me off at around 8.5 lbs of boost when I was logging on 91 octane PLUS meth,made 600 wheel. The 91 here is junk and had false knock until I switched to E85. Now pushing 10-14 lbs of boost, my boost controller gives me the option to pick. 700 750 and 800 wheel all on stock block but did buy a fore return style fuel system. i have a 15 so maybe an 18 will get a bit more boost but i highly doubt 91 will get you near 850 wheel, especially here in CA.

Naw stock fuel system runs 12 pound rn at around 720-750

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