race fuel in miami
MBWorld Fanatic!
Joined: Jan 2010
Posts: 3,249
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From: Richmond, CA
2001 E320 Wagon, 2006 LBZ Silverado, 2007 E63 (sold), 2001 E55 (sold)
MBWorld Fanatic!
Joined: Jan 2011
Posts: 1,181
Likes: 59
CL65
If your car only has a basic tune with cats, you shouldn't consider using the leaded fuels mention above. However, VP makes MS109, an oxygenated unleaded race fuel, which works great on force induced motors and is a little more user friendly for the O2s. They claim hp gains of 5% which doesn't sound like alot, but on a 650hp car getting another 30hp for adding fuel is pretty easy. My experience has proven the ECU will adapt to the fuel without a retune. The MPH is a little lower at the track using 93 oct. When you start looking for big power from fuels tuning is required as mentioned above along with all the other supporting mods. I doubt you will want to go route, since these cars can break a LOT of drivetrain parts with just simple bolt ons and sticky tires. If you want to try the fuel combine it with the coldest outside temps for your area and together you will feel the biggest gains. Adding catless downpipes and a custom cold air intake will help your car make the most power on a regular basis.
