ok i want to know the differences between a mustang dyno and a dynojet. i believe pruven has a dynojet and thats where i was tested and tuned. my car had gas issues the day it was dynoed so who knows what i actually have. but what i want to know is y people say that a mustang dyno are more acurate ? people are always saying that mustangs dyno lower and that dynojets dyno high . has anyone here actually dynoed their car on both with the same mods? if so what did u come up with?

 

come on. no one here knows anything about this?

 

Honestly man I don't know the exact differences between those two dynos but you should always stick to the same dyno for a true compairison and measure the difference for your increase.


From what I gather a mustang dyno loads up the car much better than a dynojet compaired to the street so the mustang is going to be the more accurate between the two but this also depends on if the user is running the correct settings on either dyno.

 

I have something to say about this! It is not about accuracy or comparability. It is about repeatability on the same dyno. People get way too caried away about comparing dyno's and arguing about which is most accurate. As long as the dyno that you use is able to repeat the same numbers consitantly with the same car ( tune and parts) then it does what it is supposed to do. It gives you the ability to baseline the car and then test which parameters yield improvement and which decrease your gains. It does not matter if this is done on a graduated scale of 1-20 Units of Martian Sand or the supposed unit of measure called Wheel Horsepower. As long as you can measure the gains against a know constant (baseline run) then you are golden. Sorry for the rant

 

i see, it all makes sense but what i want to know is, the same car on the two different dynos, which one will make more/less and y.

 

well im gald u posted that but thats not what im asking. i want to know y one will generally post higher numbers than the other one will.

 

There are too many variables to answer this question. You can get a dyno to read just about anything that you want by changing certain variables. Unless you personally are operating both dyno's in question that you will never know what varaibles the "tuner" is using to make his dyno read the way it does. Temp. correction, air density, altitude, are all factors that will effect the numbers.

 

DynoJet will read more (higher hp) than a mustang dyno with the same car in most cases.

 

ok but yyyyyyyyyyy. i want to know if there is a reason behind this.

 

If you want to know so bad, then do a damn search. This has been discussed and EXPLAINED IN DETAIL countless times. It would take far less time to do a quick search than it did for you to respond 4 times to your own thread...

 

Forget those haters bro.. pretty much this is your deal:

A mustang dyno like stated before puts load on the tires which react like the road. More or less the drums your wheels are spinning take more force to move the drum, such as pavement to the tire. This will cause the numbers to be more "road wheel hp" which is ***** for *****.

A dynojet doesnt load up the drums your spinning which is more of a "freespin" causing you to see "actual" whp but not true to what you'd be getting if you'd race. This causing your numbers to be higher than a mustang dyno.

Most ppl are arguing on other threads about numbers and what not cause they want it for bragging rights. There are lots of ppl on evoM that dont' care but still lots of youngins that do care hence the arguments. If you want bragging rights.. keep it on a dynojet

hope thats enough to get you what you wanted

 

+1 Million!!!!!!

 

very good, thats all i really wanted to know. here is another thing. i got my car dynoed at pruven and was tuned by al. i got about 300 whp on bad gas and 1.5 bar boost. the gas wasnt supporting the power so it was pulling timing and it would reach peak hp at about 6000 rpm. it had a good 1500 rpm left to go but the gas sucked. it was running more like a 90 oct then a 93. here is the question, i see turbo trix cars with the same mods as me dynoing on a mustang and getting like 20-30 more hp than i have. is that the differences in tune or is it the dyno? i believe pruven has a dynojet but not sure, so i would be pulling more hp but im not.

 

i also realize that each car is different but the average is better than what i dynoed.

 

well if you only peaked at 6000 rpm then yes it will be a tad higher than you pulled but cant say how much. I'd say your prolly running around 315 hp on a dynojet from what you said in the post. I dont know what your mod list is, but by hearing a lil bit.. thats my guess. Cant go off anyone elses tuning tho such as Turbo Trix.. Al's a good tuner and if he did it on a dyno then you'd be pretty well off except the gas issue. With 90 or so octane, what did he get your AFR at?