W.4 Complete Modded C217 M157 and OCTANE
04-09-2024, 07:01 PM
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W.4 Complete Modded C217 M157 and OCTANE
I'm stumped on this one... Maybe you guys can help:
My M157 is fully loaded with Weistec's W.4 Package... You'd think that, that, pushing well over 1000 HP at the crank, would be enough to satisfy pretty much anyone, but I always want more, more, MORE!
So, since I'm running catless downpipes and electronically ignored O2 sensors, now I need to find the highest octane level the ECU will allow to take advantage of this costly juice. I have 72 quarts of Octane Supreme and (4) 5 gallon jugs of 110 Octane Racing fuel.
Basically, I can go as high as I want, but, 104 is actually less powerful than 93. Other than trial and error @ 5 gallons per try, does anyone know what the optimal octane level might be?
On the other hand, can the ECU's spark advance range be widened? (Wouldn't THAT be sweet!)
Fill 'er up with 99 Octane Leaded, please!
My M157 is fully loaded with Weistec's W.4 Package... You'd think that, that, pushing well over 1000 HP at the crank, would be enough to satisfy pretty much anyone, but I always want more, more, MORE!
So, since I'm running catless downpipes and electronically ignored O2 sensors, now I need to find the highest octane level the ECU will allow to take advantage of this costly juice. I have 72 quarts of Octane Supreme and (4) 5 gallon jugs of 110 Octane Racing fuel.
Basically, I can go as high as I want, but, 104 is actually less powerful than 93. Other than trial and error @ 5 gallons per try, does anyone know what the optimal octane level might be?
On the other hand, can the ECU's spark advance range be widened? (Wouldn't THAT be sweet!)
Fill 'er up with 99 Octane Leaded, please!
Last edited by S63C4; 04-09-2024 at 07:11 PM.
