Piss_Rocket

Here is my dyno sheet from earlier this year. My tuner happened to tune on Dyno Dynamics, which I suppose I should have looked into. At the time, I was rather disappointed at 232 WHP. The motor is a built AP2, not stroked, and with all the bolt-ons running a Link G4X/Haltech wideband.

However, I have read a handful of cases where cars were ran back-to-back on Dyno Dynamics vs. DynoJet with the Dynojet reading about 12%-15% higher power than Dyno Dynamics. Obviously this is meaningless except when comparing power output per modifications on other cars, which initially seemed low. It wouldn't change the tune, or the actual power. It's just measured differently. It would definitely. make me feel better about havig sank all this money into the car.

At 12% (seemingly conservative) adjustment, that puts the car closer to 260 WHP/185 LBS in Dynojet numbers which tracks better with other graphs I have seen given the modifications.

Does anyone have experience with an S2K on both dynos to confirm this drastic difference in observed power output?

Chuck S

A good tune is a good tune regardless of the dyno used. It's as good as it gets.

A quick way to get more horsepower is to go dynamometer shopping like you seem to be thinking about. Keep taking runs on different machines and choose the high number to use during Cars-and-Coffee meetings and on-line posts. Even the same dyno will give different results on different days based on environmental factors. Beware, though, as Mustang dynos are reputed to be very conservative. Car's power didn't change of course.

Only legit comparison of power between cars is on the same dyno within minutes of each other with the same tech running the tests.

-- Chuck

Piss_Rocket

Thanks for basically reiterating what I already said.

My question remains;

Does anyone have experience with an S2K on both dynos to confirm this drastic difference in observed power output?

It's relevant because I am selling the vehicle. Frankly, I don't give two shits what forum-tards think, except that to sellers; The power output appears low when considering the list of modifications.

fatjoe10

I can't answer your question directly, but I will share the following info.

On my F24 stroker, dynojet numbers were 239/185. DynoDynamics retune afterwards was 259/187. I really can't say how much of the difference was the tune quality vs the dyno itself.

Is it possible to share your engine build details? 232 on a dyno dynamics sounds about right.

xBoostx

I use Dyno jet, dyno com and dyno-mite. On the correct settings they all read very similar. The dyno-mite being the sketchiest to match. Dynojet is the industry standard. My stroker made 297whp on a dynojet. Were they using the rpm signal off the coil or did they calibrate with wheel speed?