Octane confusion...anyone with facts?
Registered User
Joined: Apr 2007
Posts: 224
From: CT
Rep Power: 29
Originally Posted by carendt242
it's all rather easy - run the gas meant for your current program.
higher octane burns slower; if you run 110 in a stock file, you wil *lose* performance. if you run 91 in a 110 file, knock will probably get you.
as you increase octane, you can increase boost b/c the fuel burns slower and, thus, is less prone to detonation. when you increase boost, you are increasing the air inside the combustion chamber - if octane too low (and thus burns faster), the combustion more resembles a wildfire than a controlled explosion - detonation.
- chuck
higher octane burns slower; if you run 110 in a stock file, you wil *lose* performance. if you run 91 in a 110 file, knock will probably get you.
as you increase octane, you can increase boost b/c the fuel burns slower and, thus, is less prone to detonation. when you increase boost, you are increasing the air inside the combustion chamber - if octane too low (and thus burns faster), the combustion more resembles a wildfire than a controlled explosion - detonation.
- chuck
When driving these cars aggressivly, the ecu will start to pull timing based on knock sensor inputs. When adding race gas to the car, the ecu will no longer pull timing because knock activity will decrease. This will more or less "advance" timing back to near the maximum amount allowed by the ecu.
For those interested....one of the factory timing tables in a 996TT ecu.
The ecu has the abilty to decrease timing 14-15s degrees based on knock sensor input
Thread
Thread Starter
Forum
Replies
Last Post
vividracing
991 Turbo
23
Oct 2, 2015 02:23 PM
ModBargains.com
996 Turbo Vendor Classifieds
0
Oct 1, 2015 11:48 AM
shifterkartracr
SoCal
0
Sep 24, 2015 11:05 PM
