had a dyno at a local place

got 349whp on 87 octane, next time will do one on a 91 octane, i think i might see around 365whp on 91 octane?

upgrades are

-Airaid intake
-X pipe
-13 shelby mufflers
-no tune

 

Mustang dyno or dynojet?

 

This and manual or auto?

 

Hmmmm that seems low. Dyno off? I thought stock 5ohs put out 375whp or more?

 

Not all dyno’s read the same for many reasons from different makes (or brands) altitude, temp, humidity etc. The key is to stick to the one dyno to keep your results somewhat consistent, atmospheric conditions can mess with this a little but at least you will be comparing apples with apples.
Side by side on the strip will always be the best way to compare similar cars from different dyno’s and I think would be very interesting, although different driving experiences now come into play! I guess that’s the fascination with motorsports, so many variables. Well it is for me anyway.
Bottom line is I wouldn’t panic about my numbers not being as high as others, keep up the fun work you are doing.

 

It was on a DynoJet, not sure what difference it makes?

the guy did the pull in 4th gear and car running 87 octane. Manual 6 speed 3.73 gears.

i got exactly 349.78WHP and 324.38TRQ

a stock 5.0 on 91 octane should be at around 360WHP and 350TRQ so i dont see why my TRQ is at 324 and not at around 339 if in stock form its only about 10TRQ difference to WHP. could 91 really make this much difference?

I will do a 91 pull on the same DynoJet whener they come around to sac again, it will be the only true way to compare the difference to 87.

Also considering i have an intake, x pipe and mufflers, i was expecting to see around 360-370 on 87 octane, but like you guys said, dyno machines are not all the same.

 

3:73s and MT82 , you were suppose to dyno in 5th gear, 5th is 1:1 ratio.

 

Needs to be done in 5th. Mustang dyno reads lower than dyno jet.

 

Pulled in wrong gear

 

What they said.
FYI my numbers in sig are stock through GT500's on a Dynojet and in 5th gear.

 

also correct me if im wrong but if you plan on doing a test on 91 octane as well dont you need a tune for it to be noticable?

 

No, the computer can pull timing to run on 87. The factory HP is rated at 93 octane.

And like others said, 5th is your 1to1 gear.

 

Well ****, I will never see the true potential with my car then, there's no 93 octane in my area, all I see is 87 89 91

 

benifits of living in michigan, i can find it all over and its all i run

 

You guys don't really think you're feeling or using that 3 horsepower difference between 91 and 93, do you? Lol

 

well thats good to know.. why would this guy not know? maybe because he hasnt done any new mustangs yet? ill contact him .... so next time im doing it on 91, ill ask him to do one in 4th gear and one in 5th gear for free

 

How much does he charge? Its 3 pulls for $50 here or you can rent by the hour.

 

Every little bit helps
Besides I dont remember the last time I've seen 91 octane here in The "D"

Like mopar? said you can usually get 2-3 pulls for $50-75 depending on where you go.

 

so i contacted the guy on facebook, he was nice and was thankful for running my car. then i posted this and his reply...

 

Wow, rage much? He is wrong and an idiot, find somebody else and file a report with the BBB.