[maryjane]

Originally Posted by Torgus

dyno?

Check out the draggy thread. MPH is better than dyno numbers.

[Torgus]

Originally Posted by maryjane

Check out the draggy thread. MPH is better than dyno numbers.

I just like to see the gains plotted on a dynojet. I find it a better visualization of the performance gains of the change in tune or hardware or both.

I'm not bringing my SUV to the strip, so MPH gains means less for me. Draggy also does not factor in altitude iirc.

Don't dynojets adjust for altitude? The strip(or your favorite road in mexico) and your MPH cannot account for running at sea level vs say in Colorado.

Originally Posted by Torqu3

HP TQ Tune Turbos Fuel
409 490 JR 4.1 TuneMyEuro R90 Dyno problem
311 492 Unknown stock stock
344 528 ECUProgram TuneMyEuro R90+meth
345 532
348 541 DUDMD 2 Race stock stock+meth
318 546 JR 2 stock stock
348 550 Malone 2.9 stock stock
359 558 JR 2.8 stock stock
343 559 BPC Stage 4
429 588 BRR Hybrid Tune Tim's Stage 3 R90
351 589 BPC (2 or 2+) stock stock
348 629 Malone 2.9 stock R90


All this data was compiled on the same dyno on the same day. Do with it what you will. The dyno problem noted was a faulty torque reading because the software was setup wrong.

What type of dyno?

Don't they need the torque measured to accurately predict HP? Horsepower equals torque multiplied by rpm. If your torque reading was off than your HP is off right?

The guy with stock turbos put down significantly more TQ than people with upgraded turbos and R90 pumps etc. We all know that is not possible assuming no mechanical or tune issues. Unfortunate it seems because of the bad tq reading on the dyno the data is junk in junk out. Which is a shame as there were so many M57s on the same day etc. with different tunes and mods.

[maryjane]

At the top of the draggy posts DA is there, as well as slope. Sadly dynos can be manipulated. But like all data, ALL things need to be reported for transparency. ( weight, DA, slope, MODS). I'm trying to give details for each post.

[Torgus]

Originally Posted by maryjane

At the top of the draggy posts DA is there, as well as slope. Sadly dynos can be manipulated. But like all data, ALL things need to be reported for transparency. ( weight, DA, slope, MODS). I'm trying to give details for each post.

Ah sorry I miss the A and DA at the top. Thanks for pointing that out. So while it does not compensate(and should not) for the A and DA, it does show it. That is good.

My understanding is it is a LOT harder to manipulate a dynojet(with its fixed weight roller & non-adjustable load) and the results are much more comparable across the country/globe than other types of dynos. I also find it hard to believe an enthusiast would manipulate a dyno, but I can see a vendor doing it for sales.

I agree the more information provided the better to compare results with someone else.

[maryjane]

Yeah...the data from that meetup looks a little off on some, but at least they did TRY to get some actual comparisons. Would make for some fun discussions.

[crowbarsteel]

Yeah, I just wish they would have done some racing since everyone was there! Some dig and from a roll. Would have helped paint a better picture of the different vehicles performance