[carguybrown98]

I recently had a 2.85 pulley installed and tuned. The temperature was 45 degrees and I did a wot pull and my afr dropped to 9.5-9.6. It typically stays in the 10.5-11.1 range. I specifically asked for more power, but wanted a conservative tune. I know people typically tune theM at 11.5 The place I went was not specialize in Mopar, but works on a little of everything. Is this safe???

 

[motorheadmike]

No. It is a closed loop system.

 

[SickToo]

9:5:1 is very rich

I would throw 100 hp worth of nitrous at it and see where yer at : )

Either that or change the oil n plugs 3x as often

 

[carguybrown98]

No. It is a closed loop system.

Do you think bad gas would cause it to run th

9:5:1 is very rich

I would throw 100 hp worth of nitrous at it and see where yer at : )

Either that or change the oil n plugs 3x as often

I’ve only seen it once. It normally stays around 10.5-11.1. The only thing different was the gas I ran(93 shell in the country). I normally run Sunoco 93 and I’ve only seen it drop to 10.5. Do you think bad gas would cause it to run richer

 

[motorheadmike]

If this was after multiple consecutive power pulls you may have triggered COT.

this dont seem correct to me?

I think you mean 305x45x17, SS or ET street R ? ss

www.challengersrt.org

 

[carguybrown98]

If this was after multiple consecutive power pulls you may have triggered COT.

this dont seem correct to me?

I think you mean 305x45x17, SS or ET street R ? ss

www.challengersrt.org

Wouldn’t that have cause it to pull boost and make the car slower. The car still pull like a freight train.

 

[saagz87]

Asking your tuner to check your datalog is far wiser than asking the forum in this case

 

[baabootoo]

The readings are from an aftermarket wide band gauge or the car readings?

 

[carguybrown98]

Asking your tuner to check your datalog is far wiser than asking the forum in this case

I figured I could get a quick response or someone else was experiencing the issue that I was

The readings are from an aftermarket wide band gauge or the car readings?

It was from the car, but I believe from what motorheadmike said was spot on. I was on the back roads headed home from Mopar at the beach and I was on some back roads and nailed it a couple of times. I believe it did trigger the cot protection. I noticed my air to fuel ratio goes down the higher I go in the rpm range. But I believe that’s the fuel enrichment kicking in for protection. Because they warranty there builds and I asked for a pretty conservative tune. Even tho I only drive it maybe once a or twice a month