yooker

Stock 2009 C63 with charcoal filter removed and 10,00km on the odometer


Is my car broken?

azlane

Aren't mustang dyno's supposed to generate lower numbers? I have also been told that the adjustment factors (SAE corrected etc) can cause 10 to 30 hp variances. I think SAE corrected adjusts the readings to what would be more or less ideal conditions (sea level and 70 degrees).

Also, did you have the car in dyno mode?

yooker

Car was in dyno mode, everything turned off, hood was closed for the run and all runs were done in 4th gear

C63newdude

Uhmmm... that reading seem very very low.

yooker

Well there was an EVO X that showed up and he dynoed 208whp, and that car is rated at 291hp at the crank.

C63newdude

^^Yeah but that is a AWD too, yours is RWD. If you want I can post about 5 or 6 of my last 6 cars that were dyno stock and with a couple of mods on a Mustang Dyno so that yoiu can have an idea.

Here is one to make you angry(I am being sarcastic):

94 Dodge Stealth 112000 miles 6 speed manual AWD only mod k&N filter
put down 269whp/299lb-tq on a Mustang Dyno, car is rated at 320hp/315tq(crank)

06 Evo IX, only mods boost controller,mail-in tune,air filter,3"exhaust put down 304whp/304lb-tq on a mustang dyno, car is rated from factory 286hp crank.Remember, it is a AWD also.

There is something wrong on your readings.

jstefanop

iTrader: (1)

either that dyno is broken, or there is something very wrong with your car...below is my stock run and your showing a 60 HP difference.

How does the car run and feel?

MB_Forever

Most stock C63s I've seen dynoed between 365 to 370 whp on a dynojet. Assuming 18% drivetrain loss, those numbers would put them between 448 to 452 crank hp which is within the advertised stock numbers. Mustang dynos, if setup correctly/aggressively, usually read about 10% lower than most dynojets. This would mean that your car should've still at least dynoed 330 whp. That said, I've seen Mustang dynos vary greatly between machines and different operator settings. The first time on the dyno, for example, my car read 502 whp on a Mustang dyno before the technicians came to fix it. Best dyno is usually the track.

What type of gas was in the car and how hot was it in the dyno room?

azlane

Can someone explain the filter value? The lower dyno says 6 and the higher dyno reads 75.

yooker

94 octane, the dyno room wasn't too warm

jstefanop

iTrader: (1)

its just the smoothing filter value. The higher the value the smoother the graph looks, and takes out fast changes in values which is usually noise from the dyno sensors.

C63newdude

The filtering that I am aware off is the one that makes the curve reading smoother(not as peaky). Typically your numbers are higher before been filtered. Once you filter the power and torque curve the readings are lower but more readable and smooth. It is on the software.

Someone is more than welcome to correct me.

SebringSilver

That's a terrible number, Ken. I put down almost 100 whp more than you did also on a Mustang.

*scratches head*

yooker

just as confused as you are

320 dreamer

i hate to add salt to the wound but heres my mustang dyno on my 32 total stock engine k&n filters only mod

321 hp 317 ft/lbs torque wcf (with corrected factors)

Brian GT PRO

I think you might not have been in dyno mode. You also need to make sure the car is run in 5th gear.

yooker

car was in dyno mode, can't run in 5th gear cuz it'll hit the limiter at 155mph

Brian GT PRO

oh, you don't have a PP car.. right, wow it was in dyno mode? hmmm maybe you need to have them check the settings on their machine. We have our settings password protected in case of accidental changes, maybe their settings got changed on accident? Double back check on your graph, it looks a bit odd, the curve does not look right, even with the smoothing factor turned up. hmm odd