mustang dyno VS the dyno jet - Northern California Ford Owners

This is topic mustang dyno VS the dyno jet in forum Tech Talk at Northern California Ford Owners .

To visit this topic, use this URL:
https://californiafords.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=6;t=017252

Posted by 9COBRA3 (Member # 4216) on :

thinking of tunig and dynoing my car in..but i heard there is a mustang dyno and a dyno jet ...pros?cons?...is there a difference in the two? shooting for 300hp on the mustang dyno but not sure if it'll be the same on the dyno jet

Posted by warhorse58gt (Member # 7702) on :

i stole this off another post in tech.

The main difference between the Mustang and the Dynojet is that a Mustang
is a loading dyno and the Dynojet is an inertia dyno.

With an inertia dyno, the only load being placed on the vehicle is the
weight of the rollers. With the Dynojet, that weight is only about 2600lbs.
So if you are tuning a car on the Dynojet, you are tuning the engine to push
around 2600lbs. That's fine on the dyno, but as soon as you get the car on
the street, the car probably weighs closer to 3500lbs. So the engine you
just tuned to push around 2600lbs is pushing around about a 1000lbs more
weight. This additional load on the engine is going to cause the engine to
detonate.

Whereas the Mustang is a loading dyno. We have an electromagnetic brake
called an Eddy Current that allows us to apply additional load on to the
vehicle. We also have a patented program called Road Load Simulation. With
this program, we can simulate the weight and aerodynamic drag of the
vehicle. So when you are tuning the engine on the dyno, you are tuning it
to the amount of load that it normally sees on the street and therefore it
won't detonate when on the street.

As for the Dynojet reading higher than the Mustang, that is correct. But
if you look at almost all of the other dyno manufacturers out there, they
read numbers closer to ours. About 6 months ago, there was a magazine
article in "Sportscar International." This article was an interview with
Mark Dobeck, the founder and original owner of Dynojet. In the articles he
goes on to explain when he made his first motorcycle dyno, they weren't
getting wheel horsepower numbers that he thought a certain motorcycle should
get. So he incorporated a fudge factor into the number. That fudge factor
has been present ever since in all of their dynos. That is why they tend to
have higher dyno numbers than other dyno manufacturers.

If you have any other questions, please let me know.

Thanks,

Tim Gentil
Sales Engineer
Mustang Dynamometer
2300 Pinnacle Parkway
Twinsburg, OH 44087
Ph: (330) 963-5400 Ext. 211
Toll Free: 1-888-468-7826 ext. 211
Fax: (330) 425-3310
Email: tim.gentil@mustangdyne.com

Comments: WOULD LIKE TO KNOW THE PRIMARY DIFFERANCE BETWEEN A MUSTANG
DYNO AND A DYNOJET. I HAVE BEEN TOLD BY VERY RESPECTABLE RACERS AND TUNERS
THAT YOU COULD POSSIBLY DETONATE ON A DYNO JET DUE TO NO LOAD PLACED. ALSO A
DYNO JET GIVES RWHP RESULTS 10% HIGHER THAN A MUSTANG DYNO.?

[ December 18, 2007, 01:04 AM: Message edited by: warhorse58gt ]

Posted by r3dn3ck (Member # 3192) on :

I just did a back to back run on both types and got exactly what you should expect from a competent dyno operator... identical results.

I got 278/332 on the mustang 750 and 280/333 on the dynojet. There was more variation from run to run on each dyno than there was between them.

I went to BRG Racing and Imports Automotive, both in Concord.

Posted by Thirteen Twenty (Member # 7961) on :

quote:
Originally posted by r3dn3ck:
I just did a back to back run on both types and got exactly what you should expect from a competent dyno operator... identical results.

I got 278/332 on the mustang 750 and 280/333 on the dynojet. There was more variation from run to run on each dyno than there was between them.

I went to BRG Racing and Imports Automotive, both in Concord.

Posted by Eddie510- (Member # 2354) on :

Hey hows it going 9cobra3 [patriot]

Dont worry about your numbers bro you still cant beat me [Eek!]

410's bro, keep up [burnout]

[ December 20, 2007, 11:45 PM: Message edited by: Eddie510- ]

Fueled by Ford Mustang Owners
on CaliforniaFords.com