100 Octane OK to use on stock engine? - Page 2

11-21-2009, 10:18 AM

#26

skratch77

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2005 E55

Quote:

Originally Posted by Hammer Down

Skratch do you have 91 instead of 93? With 93 you will be up around 96.5 Octane, you may be ok but if you can mix 91 with the 100 you may be better off. What octane rating is your car set to?

I can do 91 also,but my car is tuned for 93 now,I was thinking maybe 5 gallons 93 and 4 gallons 100 to get close to 95,either way,my car has a tune and mods so its not going to mimick a stock ecu car.

if you guys are seeing 2.5d advance and leaning it up,you will see alot of power once your already modded.

thats good enough for like 30whp on my car,thats a huge increase in advance with a 180 pulley on there.

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