Predator Tune Making Little Difference on '09 Super Bee

[JeepDodgeRam]

I dyno'd my '09 Dodge Charger SRT8 today.

Max HP stock was about 360 (Red). Torque was about 370 lb-ft.

Results with 93 Octane CAI Predator were nearly identical (Green). Modest gains (1-2 hp) in the low end, but max HP was still 360.

We noticed the Predator was making the A/F ratio even richer than stock. Is the Predator supposed to do that??!

Thanks for any info.

[mikel]

No, it should not be richer than stock...

These results are all over the place, why do 2 runs overlay, and the black run is much higher?
Are you sure the balck run is not the tuned run?

Where is the A/F info, cant say much without seeing that?
Did you monitor KR?
Have good fuel in the tank?
Did the car get hot on the dyno and go into COT?

[JeepDodgeRam]

The two runs that overlay are the stock tune and the Predator 93 CAI tune. Brent at Dyno-Tuned Performance had the same reaction and checked the Predator to make certain it had installed the tune.
The black run is the Custom tune they installed.

I don't have the specific A/F info in front of me, but I remember talking about the stock A/F being about 11.5/1. Brent said the Predator tune was slightly richer and the timing was advanced a couple degrees. The custom tune A/F was somewhere around 12.3-12.4/1. I can check the specific number later...
We also talked about seeing significant knocking with both the stock and Predator tunes, but I don't have the specific numbers. Nor do I know if the knocking continued with the custom tune.
I had filled up with BP/Amoco 93 Octane right before the testing.
And yes, the engine got hot on the dyno and we had to wait 20-30 minutes between runs to cool it down.

Thanks again!

Mike

[SRT8Tech]

Ive been wondering about the COT also. Would it bad to actually turn it off in the tune or is that possible?? Since its just a guessing game for the PCM to actually know the temp of the cats I would think turning it off wouldnt hurt so the COT wont kick in all the time.