i might get my stang Dynoed on my next vaction

 

I would think you would be able to pick up at least 5-10rwhp by leaning it out.

 

Do the gears effect the hp and tq results on the dyno?

 

i give it

 

More than that I should think.

 

No, I already covered that.

 

Remember, he isnt turbocharged. A turbo car will gain 15-20 by leaning it up by a point or a half...but his N/A setup will only gain about 5-10.

There could be a lot of other things wrong with his setup though, so there still could be more then 10hp trapped in that motor.

 

Yeah...true.

 

Gears do make power.

Why do you think that everyone goes to 4.11's? Its so they have more power easier.









Nice job Phil.

 

To an extent, yes. I found this on a post on SVTPerformance regarding that big issue. This is what a represetative from dynojet said.

The 4:10 gear will show less horsepower than the 3:27. The reason is due to rate of acceleration changes. The rate of acceleration is quicker with the 4:10 because of torque multiplication being increased to the rear wheel. The horsepower will show less because the targeted RPM is met before the horsepower has a chance to overcome the rotational mass (dyno, drive line, etc.) or moment of inertia in speed. Because the speed is decreased and the RPM is met faster, the horsepower never has a chance to catch up with itself, so to speak. The overall ratio of 1:1 will always produce the most horsepower on the chassis dyno. Having said this, a similar problem can occur with horsepower loss when the rear gear is too high. The horsepower is being absorbed in just trying to keep the rotational mass spinning. Please keep in mind that your engine's horsepower never changes but what gets to the dyno or drive surface does. If you have any further questions please don't hesitate to ask. Thank you.

So I don't know. I know Kevin knows his shit, but then the company that makes them states this. I have also heard this from a few race shops on various mustang sites as well. I am sure an aluminum ds will fix that though.
I am goping to change out the O2's that have 127k on them, get an adjustable fuel pressure regulator, almost time for a fuel filter, and could always swap out some different plugs and wires. I did a tune up 12,000 miles ago with a new fuel filter, plugs, pcv, cleaned the injectors out.