dyno numbers i can't believe, check this out!
- Thread starter mr.b
- Start date
352Ford2
New Member
At the hot rod shop I used to work at there was this one dyno we would always send customers too that wanted their magical HP number. It was nice and sloppy. That way the dude could claim he has "400 horse power"
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jackchan
New Member
when you do figure it out.....please post. And thanks for the dyno sheet scan!
Have you always owned this car? could it be that the engine had a problem early on and the ford dealer changed engines i.e. bored it, changed cams, etc.?
Jack
Have you always owned this car? could it be that the engine had a problem early on and the ford dealer changed engines i.e. bored it, changed cams, etc.?
Jack
i have only owned the car about a year. i am the 3rd owner. it is bone stock. intake, headers, cats, all stock stuff. i am curious to see what becomes of this, i know they will be trying to figure it out come monday. i will let you know what the prob. is when i, and they, figure out what it is. the mustang dyno is usually lower and i know it lets a lot of their customers down when they show up expect high numbers. just like the last guy wanting to put down 600 rwhp and only put down 480, with his 408 procharged mustang. everybody is use to dynojet numbers, which i feel are a little high.
First of all, i think you misread the page about the dyno and gears. Gears can easily screw up your results (but they wont change your power, just how the dyno interprets it).
First step would be for you to confirm that the RPM on that graph corresponds to the RPM of the engine. Was there a wire from the dyno going to your plug wires or anything?
First step would be for you to confirm that the RPM on that graph corresponds to the RPM of the engine. Was there a wire from the dyno going to your plug wires or anything?
mr.b said:
dstanggt50
Founding Member
well, it sounds like you already know what to expect from a stock 5.0, but if you want to see it on paper, I would just go to a different dyno. Its cool to get a baseline, but w/a car so stock, and knowing what its probably going to put down, or should put down, I wouldn't bother spending the $ to get another dyno run.
Mustang dynos are VERY easy to get false numbers from. The dip**** running the dyno has to input almost everything and can vary alot with the load. Mustang dynos are supposed to read lower, when it reads 45 hp higher than a Dynojet, it's wrong. Your car doesnt make 245, period, ESPECIALLY running rich, on a MUSTANG DYNO.
Simple way to fix this, go run it at the track, when it doesnt run 104-105 MPH, you know the dyno is on crack.
Simple way to fix this, go run it at the track, when it doesnt run 104-105 MPH, you know the dyno is on crack.
just4bob50
Active Member
When i put my supercharger on i had my car tuned on a mustang dyno. With 6psi of boost and an ambient temp of 92 degs ( humid as hell ) I put down 264hp and 300 tq. Since then ive added a power pipe,more timing, and a little more fuel. I havent been back to dyno since the last mods but after the first tune the car trapped at 106.1 and now it traps at 108.9. so i would say its a about 285hp on a mustang dyno now. On the mustang dyno there is a function on there that will let it read like a Dyno-jet. If your car is actually making that hp you should be able to run low 13's no problem
mr.b said:
You can change the load, input your own weather conditions, then input the gear ratio, weight and everything. I know one local pathological liar that went to a Mustang dyno and they played with everything to give him a big number to post. They are kind of weird. Good for tuning a turbo car but thats about it and even the newest Dynojets have the Eddy Current Loading like the Mustang dyno.
we double checked all the drag coefficient numbers, vehicle weight, etc. Nothing was done to increase the power output numbers, i have nothing to gain from all this, i just would like to figure out why. the dyno owner (my friend) didn't believe it either and rebooted the machine and rechecked all the other inputs. They have never had anything else like this happen before. and usually cars on their dyno read a tad low (being a mustang dyno). It was nice to get an airfuel on the car for the heck of it. Which was rich at 11.8 max. stock air meter, throttle body, headers, intake, silencer still in, original spark plug wires, as stock looking as i can tell. I didn't even have to pay to have this done, we just dynoed it to kill time. its not like i showed up wanting to get a big hp number on paper, nobody would believe it anyway (including myself). they just recently had a gt with a gt -40 crate motor and exhaust which put down 265 at the wheel.
the weather station for the dyno is set to autmatically compensate, but it was about 70degrees that day, nothing especially cold. it has a 2.73 gear in the car also.
the weather station for the dyno is set to autmatically compensate, but it was about 70degrees that day, nothing especially cold. it has a 2.73 gear in the car also.
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