Ok, thanks for the answer...
If we presume the load from AWD is the issue, what would be the best way to fix this? Fattening the AF or pulling the timing?

Thanks!

I have a 2009 AWD 300c and I use the 91 perf cai tune with 91 octane fuel.
I have tried about every kind of 91 octane fuel that is available and I get about the same results everytime. Here is my issue, if I load up the 91 tune and leave it as it is, I get about 2-3 st knock at wot 3800 rpm and up ...

Did you get that time with the EVIC?
Most of the time, stock and untuned is nothing to get exited about.
My stock and untuned 0-60 was around 6.3...
I did a 5.0 flat with good gas and the 93 perf cai map.

It's not just the additional power... There is also a lot of torque management taken out of ...

Yeah! Not too shabby if I may say so... the Aspen looks good!! Vanilla light side it is then... haha

I wonder what kind of times this would run on the 1/4... let's say with a 100 shot for starters.

Well first of all, welcome to the diablosport forum.

I own a 300c so maybe a few tuning options may differ...

Basically, for hauling stuff around, I think your best friend is the throttle boost option. You can increase it up to 20%. This will help you get off a dead stop when you carry heavy stuff ...

Anyone home? haha

Predator U7135
2009 300c AWD with afe intake and magnaflow catback, 180 t-stat

I would like to buy a cmr tune even if I don't have anything special done to the car and here is why...

I'm getting a bit of ST KNK and would like to totally get rid of it.

Also, I will be running a 100hp shot next ...

Mph seems a little low. My 2009 300c AWD traps 102-103 mph with a high DA. Something is wrong. Have you tried logging for ST KNK and LT KNK? If you haven't logged anything yet, you should log as soon as possible.
If you see knock but have a hard time reading the playback on the predator, I suggest ...

Ok thanks!

I have seen a few threads about good brands of gas in the USA but nothing for Canada.

I can get:
Petro-Canada 94 octane (I think this one is 10% ethanol)
Shell V-Power 91 (the new nitrogen cleaning bullshit formula)
Sunoco 91 (made on a foundation of piss and vinegar)

I think I'm SOL. Can anyone ...

My opinion for sensors is go OEM as much as you can. I have had bad luck with after market sensors.

If you want to go after market, make sure you can return them. Around here, they never take back sensor so you are stuck with it happy or not. I pay a little more for OEM but no issues...

Yes bad ...

Like Duster said... sensors can be intermttent. Mine was for at least 6 month before taking a complete dump. I resoldered my wiring 3 times because of that freaking sensor. I thought, just like you, that sensors were an on or off thing but I was wrong.

My cam sensor did the same freaking thing. It ...

Duster360 please correct me if I'm wrong but I don't think I am...

Higher chances are that the sensor is bad, not the circuitry or the pcm.
Your code tells you that the issue could be any of these:
1)Your TPS sensor is not mounted securely
2)The TPS circuit is short to ground or another wire
3 ...

The new AWD system started in 2009. The new system uses an electromagnetic clucth assembly to power up the front wheels when needed. If you want to have the option of obliterating your rear tires all you need to do is:
1)Start the car and get rolling
2)After you reach about 20 mph you have to push ...

I would try doing the throttle calibration procedure and unplug the batt if calibration doesn't work.