Are you referring to meme's dyno above? Doesn't seem that unreasonable since the power curve looks about the same as any bolt on 350Z or G35. ~20hp from bolt ons and Uprev aren't out of the ordinary on the VQ, see it all the time on the FX as well as the G/Z.
Mustang dyno and dynojet work on the same principal. But on the Mustang, there is also a brake that can simulate additional load. So that's why it reads the lowest usually (they've simulated load). It's to help with accuracy and tuning since a dynojet has rollers of a fixed weight and cars are all different weights. So with a dynojet compared to the street, there can be a significant different in AFR due to the lower load on the dyno. That can lead to issues of running lean and also why a lot of the glory runs you see on dynojets would not be safe to run on the street. If you have a Mustang, that can be adjusted. In theory, the operator could input a higher load on the first run and then lower the load on the 2nd to show bigger gains (dyno results for gasoline additives probably do this). But that doesn't remotely look like what the chart above shows.
I lumped the two together, didn't I.
Neither one looks/sounds right, especially Exotich's.
The chart, if it were on an algorithmic scale, would make more sense concerning h.p. The climb looks so steep, like one from a centrifugal s.c. I've observed other charts as well and most don't appear to me to have such a strong vertical climb, especially through the middle of the chart. Mine doesn't. The torque starts and stays high while the hp gets up at a lower rpm
Exotich's #'s doesn't add up either. I be willing to bet those tires measure 32-33 inches thus effectively decreasing his final drive which is in no way good for torque multiplication on the road. Off the top of my head, he went from a 3.7 to a 3.5 if those are 32" tires. Stock tires on 18's or 20's measure 30.6".
I've read that tire diameter size can have an affect and it appears, per Exotich's torque, that it would be an opposite affect which explains his torque reading. I'd love to bother my tuner for answers but I've got enough, more pressing questions for him.
I'd post my recent dyno but my last names on it. 190.5 ft lbs and 201.6 hp. My tuner told me his dyno runs 8-15% low w/an average of 10% so conservatively, 209.55 ft lbs and 221.76 hp are my #'s on an AWD.
Mods - Kinetix hfc, Kin. V plenum, pcv delete, k&n drop in, z tube w/modified stock box, unortho. under drive pulley set, iridium plugs, an unusual water inj. setup that I've been toying with but is on the fritz, (weight reduction and brake suspension b.s. that does nothing onthe dyno) and 29" tires giving a 3.9 final drive. He was able to bump the timing a bit, move the rev limiter to 6,900 among other things. It feels good.
One might expect a 3.9 to give a higher torque reading than a 3.5 but I believe it's just the opposite, considering the #'s, on a dyno, certainly a mustang dyno.
My assumptions are w/the understanding that both of the above are AWD. My tuner said the best he's seen was a 350z w/the vq35de @ 250 whp w/full bolt on's, including headers. He also said, as I stated previously, that he can make the charts looks as good as I wish. Did this 350z's dyno adjust for the 10% I do not know. What I do know is these dyno's, the tuners, tire presure, tire size, the conditions, and the inputs give many different results on paper but in the end, toe to toe, same autos w/the same mods, they're a horse a piece, save for the driver. Thanks for the reply shadow191.