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Potential Tuner
Hellcat knock sensor voltage
Hey guys,
2018 Charger Hellcat. 2.85 Metco, ID1300, NGK plugs, Cat Delete, and LMI. Mods were the same on the old tune.
I'm not a tuner by any means, nor am I trying to tune my own car. I'm just an OCD logger for safety reasons. I like to make sure everything is happy, and that something isnt going on under the surface that I should address. I had issues with my prior tune from a reputable tuner that took me 5 months to fix. I ended up figuring it out myself by buying HP tuners and reading the tune (with some help). Fast forward I'm with a new tuner (also very reputable) and the car is finally running fantastic - finally.
I pay attention the usual suspects, a/f, fuel trims, injectors, fuel pump, and knock. The good news is I don't get any ST or LTKR, even on my old messed up tune. I do notice however on this new tune my knock sensor volts are quite a bit higher during wot than my previous tune. Previous tune the highest jump during a pull i would see is mid 600's. The pull I just did I noticed they were hovering in the 700-800 range, and even spiked once or twice over in the 11-1300 range.
I do know this tune has quite a bit more timing in it, which if I'm not mistaken more timing can make those sensors volts go up correct? My AFR is also a bit richer on this tune (which I like), it was slightly more lean than I was comfortable with previously.
Any help would be appreciated. Just like to know whats going on under there.
Thanks,
Rocco
Last edited by Rocco NY; 11-03-2019 at 05:07 PM.
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Tuner in Training
The Hellcat blower is very noisy and shows plenty of activity especially around 4-5k area (at least in my car) Both tunes should show knock sensor voltage regardless of tuning aspect.