Strange day on the rollers

[TurboBeagleBuggy]

Yesterday my trusty tuner (05_LLY) and I took my truck to the rollers for a couple of hours of dyno time. Dyno was a Mustang load cell dyno, double roller. Throughout the day several changes were made and we are both dumbfounded that no matter what changes were made the truck continued to drop power throughout the day. The highest hp. tune was the one that was in the truck when I backed it onto the rollers. Through the session multiple changes to pulse widths, timing, and other variables were made. None of which yielded any possitive results. Also, another thing that has me is that when the same tune that made the most power was reloaded at the end of the session it made IIRC 20 less HP? Best pull of the day netted 440 an uncorrected HP.

 

[Kat]

We have had problems with Mustang Dyno's in the past. All ways get a baseline first if you can

 

[05_LLY]

Trusty???? I cant even make more hp than a good stack....LOL

Just kidin' The dyno aint where it matters!!!!!!

 

[Diesel Pilot]

Do you guys know what model Mustang it was?

I'm going to do some testing on a Mustang 1100 (it's single a roller)in a few weeks, just wondering if the different models will show different results. We'll see.