jocatch

Sorry can't say for sure as it has been awhile since I have had the 93 tune in and driven in cold weather. I do remember that the problem lessens with lower RPMs (i.e., a higher gear). I do know that when the engine warms up with the Brenspeed tune that at 3000 there is a surge of power. I just order and rec'ed tonight the Bamachip 93 tune and will load it up and see what it does.

Joe

BAKnBLK2010

Here you go. I got home from work today and backed the car out of the garage and parked it at the end of the driveway. I had to do it this way as it would have taken longer than thirty seconds to get out on the road. I let the car sit for about 2 hours. I then got in started it up and took off right away accelerating slowly up past 3k. Well when it got to 3k it bucked like a pissed off race horse. So this must be the nature of the beast. So the moral to this story is to let the car warm up a bit before taking off. So will you now quit worrying and start enjoying your Mustang????

7up

What was the approximate ambient temperature when you did this test?

BAKnBLK2010

Outside temp was around 50 degrees.

cidsamuth

Unless you're actually my wife making up the "pissed off race horse" story so that I'll not worry about it.

cidsamuth

Anyone else able to replicate this?

flynjay

I was able to get a very slight "hesitation" at 3000 rpm, but no bucking (3.73 gears). Of course, my car only takes about 10 seconds to warm up here and will steam when hit with water.

Fix = Move somewhere warmer.