Very perplexing tuning dilemma..........

[joecar]

I have seen COTP kick in during knock and during WOT.

[FreddyG]

Thanks for the help guys!

I'll ask the tuner about these suggestions and see what he says (I'll also suggest that he gets EfiLive and gets rid of HP Tuners ).

I might just put ORP's (off road pipes) on and shut off COT. Not only will this help me pick up an easy 5-10 rwhp, it'll nip COT in the bud.

He seems to know what he's doing, but sometimes things can be easily overlooked and I understand that. As long as he gets it fixed, I'll be a Happy Camper.

By the way Dave, I apologize for the "fat" misunderstanding! I'm old (43) and can't keep up with the slang nowadays! I thought the kind of fat you're thinking of was "phat", but what do I know?

Thanks again Guys for your valuable insight! I Really Appreciate it!

[5.7ute]

There is an interesting discussion on the innovate forum regarding knock & its effects on AFR.

[FreddyG]

There is an interesting discussion on the innovate forum regarding knock & its effects on AFR.

Thank You for the heads up! I'm off to the Innovative forum!

[dfe1]

For what it's worth, you probably don't have to worry about killing your converters if you turn off COT. I've done that on every car I've tuned, and have never seen any converter problems as a result. Keep in mind that GM has to program for idiots-- people who will fill up with 87 octane fuel, drive with their foot rammed to the firewall and never wonder why the engine is making all these funny noises. In most cases, COT becomes active as a result of operating conditions, not actual over temp conditions. When COT is active, commanded AFR is usually in the 11.7:1 range. If you're running a supercharged or turbocharged engine, commanded AFR at WOT is probably already in that range.

[FreddyG]

Thanks for the help dfe1! I'll ask the tuner to turn it off tomorrow, if he hasn't done so already.

Thanks again!