I just had my 05 gt dynoed for the first time today. I thought my numbers would be better. It was on a dynojet and the temp was 80.2 with 21% humidity.
max horsepower-267.09
max torque-272.65
I have a jlt cai, sct tune by brenspeed with 92 octane, 4:10 gears and slp lm's. Is my tune weak? Any suggestions? My a/f is 13.0.

 

I have a 05gt my tg was 312 with 91 oct tune

 

What type of dyno, what elevation, you are also losing horsepower at the wheels with 4.10s. Otherwise, this does seem low if it were a Dynojet at a reasonable elevation. High elevation, those numbers seem plausible.

If it is a Mustang dyno, those numbers are spot on.

 

brad25,

Last summer I dynoed at slightly less than that with similar mods - JLT CAI w/ DTP 93 octane tune + 4.10's , but on a Superflow dyno in jungle hot conditions. The Superflows are quite stingy - I was at 245 hp stock with the manual trans. Your Dynojet #'s look a little low to me. Like TexaStang says, elevation could be a factor. Then again if you're happy with the way she runs, forget about the dyno #'s. IMO, they don't mean a thing.

 

I'm in portland oregon, about 500 ft and it was a dynojet. I'm thinking my tune isn't up to par or something. It never felt like there was a night and day difference from what other people said when they loaded there tune.

 

I had a similar experiance. My car turned the rollers last JULY at 277rwhp stock. This june with a JLT and CUSTOM tune my car laid down 274... that's right. My tuner said that it was due to the new 10% Ethonal gas... oh well.

 

what gear did they dyno your cars in, they did it in 3rd gear in mine, is that the problem?

 

4th gear for dyno...

 

Nobody can make any kind of judgement until we see the sheet.

My car recently dynoed at 304/310 with similar mods at 90 degrees and 20% humidity

 

there is your problem, I think 4th gear is 1:1 and that it is what gear they should have used.

 

Umm...take yer car to a different dyno if they dyno'd it in 3rd gear.

 

Temp and humidity are non factors I thought because of the computer correction for that. Am I wrong?

 

Um the dyno numbers would be way lower if he only went to 3rd

 

Yeah...the place you took the car to is stupid...4th gear is 1:1...not 3rd...I'd take it back and request a full refund or a free dyno in the correct gear.

 

What am I missing on the Mustang dyno vs. the others. Everyone always shows lower numbers with the Mustang, mine showed these on the Mustang dyno. baseline 269.1 rwhp, 278.9 torque. With CAI, Magnaflow exhaust and a custom tune it was 302.6 rwhp and 322.4 torque. I know someone will say show me, I have the scanned reports but everytime I try to attach them it says they exceed the limit for this type file, I'll keep trying. Who can explain why everyone says Mustang numbers are lower?

 

No way you're getting 303/322 with just a CAI, tune, and magnaflows

IMPOSSIBLE

 

they want to charge me $40 to re-dyno it in 4th gear. They said that most of thier 5 speeds get dynoed in 3rd gear. the original was $75 for 3 pulls. $115 to get ir right

 

I'd hardly say "impossible", possibly improbable.

With a CAI, a Bamachips 91 tune, FRPP's and UDP's im at 305/325.

 

Tell them to F-off and let them know that you're gonna give them a bad name on all of the forums and local clubs that you belong to if they don't do it for FREE!

You shouldn't have to pay for their stupid mistake....unless of course you're the one who told them to put it in 3rd instead of 4th.

 

If I can shrink the sheets I"ll prove it, don't tell me no way when you don't know for sure.