overrun fuel cut on or off??
#2
How does turning it off cool things down? When decel fuel cut is on, there is no combustion and thus no heat made. The only reason I could com up with for turning it off is if the extra engine braking upsets the handling of the car somehow. Or if having normal combustion during off throttle events decreased spin up time of the turbo by a measurable amount.
#3
Tour de Franzia
iTrader: (6)
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
On, shorter delay if you are endurance racing, longer if you are awesome. I run a 1s delay. I leave mine off because after four years of awesome in my green car with the turbo, the cylinder walls looked great.
#15
resurrection bump, do you guys still leave overrun-cut on in your track cars (not injecting on off-throttle like stock tuned cars)?
Some online literature I've come across suggests turning it off helps cool valves, piston, turbo through evap. cooling and the fuel efficiency hit won't be too much since there isn't much time on track where you should be off throttle
One example: Learn To Tune - High Performance Academy
Some online literature I've come across suggests turning it off helps cool valves, piston, turbo through evap. cooling and the fuel efficiency hit won't be too much since there isn't much time on track where you should be off throttle
One example: Learn To Tune - High Performance Academy
Last edited by ecc3189; 02-26-2014 at 10:08 AM. Reason: fixed wording
Thread
Thread Starter
Forum
Replies
Last Post
Greasyman
General Miata Chat
2
09-28-2015 10:44 AM