Just one question before Paris and Nicole come on.....I sure hope them girls get back home OK.

I went to the dyno for the first time ever last Saturday. The guy running the dyno was working the gas pedal while watching the computer screen. It seemed like he was revving it up real slow. On the A/F printout, it was like 4000 rpm before the mix hit 11.87--but then stayed there real even.
1. Wouldn't the A/F went down a lot quicker/sooner if he had nailed it WFO right away?
2. Did this affect the peak HP and TQ figures + or -?
3. Am I totally wrong--does it just take longer to rev up on a Mustang dyno (loaded) than some others-as in several long seconds?

Thanks for any info/thoughts.

PS: He also said his Mustang usually compared to his friends shop's DynoJet at 20% difference!!!

 

most dynos will bring it up through first and second gear and run it till around like 55 (I little higher on 00 and 99's) till the convertor locks up then roll it up about 10 miles an hour and then to the floor. Which means your pull usually starts at about 2500 ish.

The "reving up" technique i've seen on mustangs before.....you got me. I'm no expert by no means.

I would think that if you were going for a number.......reving the engine would put more heat soak into the intake thus dropping your intake charge temp.....thus dropping your power as much as say 10 hp???

 

well he probably didn't want it to downshift into second so he eased into it. and your a/f should be rpm dependent so it really should be the same under a load no matter how quick you mash the pedal. atleast in a perfect world.

and their is no real % of how much the dynojet varies from mustang dyne but if i were to guess it would be roughly 10-12 %off