I think it's actually at least 1500 rpm when the fuel turns back on, but I was wondering about this myself. Does the slowing from the wheels driving the car (which then has to re-accelerate more than if the car coasted) outweigh shutting off the fuel? As far as safety aspect, I had an audi that did this from the factory. 5000TD, if your foot was completely off the gas it free-wheeled. Really weird as you would head for an off-ramp and let off the gas, the car would stop slowing down. I was surprised the Feds even allowed it on a production car. As soon as you came off idle it would re-engage.
Bill Cardell TurboDog's Dad www.flyinmiata.com www.fmwestfield.com orders 1-800-FLY-MX5S tech support 970-464-5600 Don't miss Flyin' Miata's Open House! Aug 14-17, 2008 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ken Bogart Sent: Saturday, June 14, 2008 5:40 AM To: [EMAIL PROTECTED] Cc: miatapower List Subject: Re: MPG up 50% so far Rolling in neutral is less efficient than rolling in gear. When the engine is idling, it is using fuel. When you are in gear, off throttle, fuel is cut off until you get down to about 800 RPM. Not to mention, it is not as safe to coast with the trannmissin in neutral due to lack of control (acceleration) in an emergency maneuver! (Rolling in neutral is one of my pet peeves... I have no idea where this was taught!) KEN On Sat, Jun 14, 2008 at 1:59 AM, Brad Franks <[EMAIL PROTECTED]> wrote: > I rarely rev past 4.5K,neutral-roll to traffic lights > _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
