Their dyno is not always calibrated.......... Its useless.
Yeah, this is true. The problem with that dyno series is it does NOT use the actual engine rpms, it uses the "calibration" done by the operator EACH time a car is rolled up onto it. The operator is told to rev the car to 4k rpms in the test gear and the dyno is then "calibrated" for roller speed vs rpms. There is a huge problem with that in I can skew the numbers ANY way I want with that "calibration", PLUS the gearing of the test vehicle makes a HUGE difference. You could take a given engine, dyno it there to establish the baseline, change the tires to a smaller diameter, or run it in a lower gear and get a BIG improvement in WHP when the actual engine power is the SAME. FACT= The Mustang dyno is USELESS to compare to ANYTHING other than one pull to the next on the SAME car WITHOUT "recalibrating" the dyno. Certainly NOT one car to the next.
It is a dirt-simple purely resistive Load only dyno. The drive rollers (with a single Load cell on one end of the primary roller shaft and is belted together with another set of passive rollers for AWD) has a set resistance to rotation (the Load) and the dyno measures how quickly your car spins the rollers to what speed, and applies the Mustang software to convert into numbers. That is IT. So when someone complains about their low or even their great numbers on a Mustang dyno, their numbers are worthless except subsequent pulls on their car on THAT day....
I don't give a crap about the whp numbers themselves, but I learned several BIG pieces of info at the CPE dyno day. The first thing is just how hard those dudes and dudettes work to support their businees venture. Jake listened to all my feedback on their dyno and how unsatified I was with how it was operated. He wanted to make SURE that I was fully satisified (no ****!) with their operation which is why he offered and did put it back up on the rollers for more testing, and I left the event satisfied in what I had seen and learned.
The Mustang dyno shenanagins is one, another is that I spent ~30 minutes with CPE's famous Lou, the electrical engineer who designed the SB and all the flashes and is literally the brain that runs ALL the CPE electronics/product business. I got a full tour of their design and manufacturing equipment, saw some new Speed products in development, and had some candid conversation about the AP/flash vs SB/flash combo and the "rivalry"(?) between the two entities(Cobb & CPE).
I had a EUREKA! moment when re-running the event and all the conversations Lou, Josh, Jake, and a couple of their other guys through my head afterwards and I'm fairly certain I have the "Big Power" CPE SB/flash theory figured out. It has always been a strange point to me that with the reflash capability CPE obviously has, why they still need the SB to make it all work and that the SB MUST must be used to tune the car and the AP will NOT work on the ECU afterwards. I will refrain from spilling it until I run a FULL test and tune on a local dyno to confirm it works as I have theorized and I can flash the ECU and tune it using the AP and that it does NOT specifically require the SB. If I'm wrong I'll obviously report that as well!!!