Been having this issue recently. At wide open throttle, typically when shifting from 2nd to 3rd gear, my car will begin to sputter and ping, almost as if it's hitting a limiter. It's a difficult condition to describe, so I've attached a datalog. It happens more often when the engine and trans are hot or when there is a lot of added weight (i.e. passengers or full fuel tank). Running MHD Stage 1+ tune.
Datalog: https://www.spoolstreet.com/graphs/...-shift-3-18-22.15935/?series=2,19&zoom=-7,664
Things to note upon shift into 3rd gear:
- Low pressure fuel sensor readings look low, dipping to 50ish psi, can anyone confirm?
- Abnormal cylinder timing corrections across all cylinders
- Throttle position is closing while accelerator pedal is at 99.6 position
- Lambda bank 1 shoots up to around 23.5, lambda bank 2 is steady around 13
Feel free to ask any questions. TIA for any help!
Datalog: https://www.spoolstreet.com/graphs/...-shift-3-18-22.15935/?series=2,19&zoom=-7,664
Things to note upon shift into 3rd gear:
- Low pressure fuel sensor readings look low, dipping to 50ish psi, can anyone confirm?
- Abnormal cylinder timing corrections across all cylinders
- Throttle position is closing while accelerator pedal is at 99.6 position
- Lambda bank 1 shoots up to around 23.5, lambda bank 2 is steady around 13
Feel free to ask any questions. TIA for any help!