This weekend I was a mini vacation and there's a Truck shop with a dyno near where I was staying so I went to get it dynoed. The results were..... 236 HP @140 MPH, and 319.8tq@102 MPH. I asked why it wasn't done with RPM's and he said that it was more accurate this way??? This was a Mustang dyno, although I'm not sure what model. When I was paying for it I noticed there sign said the dyno was good for 900 HP and up to 150 MPH, so i'm thinking this is why the results were off. I didn't think of it at the time, but I should have asked them to do it in 2nd gear as well, one time when he was getting up to speed and didn't have it far enough to get it into 3rd I saw a 336 tq number.

 

Mustang brand dynos will show a lower number every time.


reason is that its supposed to be a more accurate number..

thats what they tell you, but how 240rwhp propels a 3700lb car through the 1/4 mile in low 13's I have no idea...

haha

as stated in the other dyno post.. I may try out a Mustang dyno nearby to see how the numbers look compared to my 40+ dyno jet pulls..

 

If your car is really running these times:

13.124@106.01 w/1.9 60'

Then you should'nt give a damn what any dyno says. Yes, Mustang dynos usually read lower than Dynojets, but even 230-240hp seems below average. But if the track numbers are correct, the car is fine. With a 106 trap, I'd assume you'd be in the 300-310rwhp range on a Dynojet.

 

Those numbers real dont jive with the 1/4 mile times. Why was the torque great @ 319 and the hp so low?

 

I dynoed 311hp and 333tq and my car was running 110mph in an auto with 273s. Every dyno is going to get different results.

 

ya know what would be kewl? A dyno at the track.. get track times and a few dyno pulls all in one along with weather readouts...

that would so rox..

anyone have a few hundred thou to get it started?

 

yeah, thats off!!!! your 1/4 mile times PROVE that!!!! i would guess more in the area of 280-290 RWHP

 

Did he do the pulls in 3rd cause i should be done in the one to one ratio.

 

was your cutout open?my car dynoed like **** but my ET is where it should be so im not concerned.dyno #s mean nothing.

 

They usually have that mobile Dyno thing at e-town ricer nationals but it doesnt seem very well run.

 

The 1/4 mile times are accurate, and the dyno was done in third gear. I'm not sure how much individual calibrating is needed on each car, but he said that the 140 mph was at about 5400 RPMS, shouldn't it have been in the 160's at that RPM?

The cutout was open, and i did have 2 sandbags in the back(i don't think that would affect the dyno, just saying). With the air filter out i gained 2 tq and lost 2 hp.

 

I know we are talking about different dynos but i gained 11 hp and 11 torque without my airfilter, i would disregard those results and get it done somewhere else.

 

like other people here said,dynos are only a fraction of the story,your car is runnin the MPH's it should so dont worry its puttin down the proper power whether the dyno tells u or not

 

Never trust a Mustang............................Dyno that is

Yeah I hear they always underrate the RWHP. The dynojet is more accurate and like the others here have said, your trap speed indicates a good 300 RWHP. But to answer the question as originally worded, the lowest LS1 Dynojet number I have heard was about 260 RWHP on a 99 TA with an A4 tranny. That seemed very low to me when I heard it and was giving the car owner my condolenses.

But then again there could have been a problem with the dyno or with his car to cause the low numbers.

Good luck with the next dyno session