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Signal 2 · 11-19-2011, 09:40 AM

All four 9's are suggested once significant power modifications have been added or running higher than stock boost. It reduces the chance of pre-ignition. Running colder plugs while still relatively stock just allows them to foul quicker.

Red-lining a car JUST to clean plugs is dumb IMO. It's all too frequently used as a rationale for driving like an ass-hat. Driving hard is fun, I understand. But taking a car to red-line stresses alot of things that tend to off-set what little benefit that might provide. Buy decent gas, change your oil frequently and if your worried about carbon build-up, add a simple AI system.

Maybe there's something, but I'm not aware of any reliable data reflecting a significant change in mpg related to a plugs heat-range on our cars.

11-19-2011, 09:40 AM	#8
Signal 2 Viable Fossil Join Date: Mar 2008 Location: Mid-West Posts: 199 Rep Power: 18	All four 9's are suggested once significant power modifications have been added or running higher than stock boost. It reduces the chance of pre-ignition. Running colder plugs while still relatively stock just allows them to foul quicker. Red-lining a car *JUST* to clean plugs is dumb IMO. It's all too frequently used as a rationale for driving like an ass-hat. Driving hard is fun, I understand. But taking a car to red-line stresses alot of things that tend to off-set what little benefit that might provide. Buy decent gas, change your oil frequently and if your worried about carbon build-up, add a simple AI system. Maybe there's something, but I'm not aware of any reliable data reflecting a significant change in mpg related to a plugs heat-range on our cars. __________________ Jim VR R1 FD Last edited by Signal 2; 11-19-2011 at 09:47 AM.