dydyno results for tunes(RCD race and ID X rac)e

[ptr34]

here are the results for my dyno runs before gears and after gears and different tunes


this is dyno before and after install of 4.56 gears lost power with the gears

[IMG][/IMG]
24 is ID x race
25 is RCD race
26 is Spartan Ultra comp

[Rubenk]

are those really low numbers or is it just me not knowing any better?

[ptr34]

dont know . the numbers where good until the gears change

[harrys91rs]

So a gear change lost 50hp and 100tq?

You got it dynoed 3 months ago and then just recently with new gears, Do you think you could have lost the power gradually over that period due to something else?

[ptr34]

not that i know of going to check it with ford tech. but no feel the same

[alwil]

does it have more power off the line?

[ptr34]

feels like it. the only thing i see different is that the one run say sae 1.02 and the rest say 1.03. going to ask dyno guy tomorrow what that means

[chuckles]

This is normal. You will "loose" power when you go up in numerical gear ratio value. Chassis Dyno is a relative measurement tool, not absolute. Actually the numbers with the new gears are going to be more representative of you actual power. With those large tires, you will loose some power to the ground.

[ptr34]

so if i put stock tires on it and run it on dyno the # will go up?

[hpprose]

The first dyno sheet, 400/709 is a bad dyno pull. There is a spike in the run. Those numbers don’t mean anything with a spike in it.

So, if you look at the second run and compare it to the other sheet, you will see the gears didn't make much of a difference.

Also, notice the difference in the runs, no spike.