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Anyone here tuning with HP tuners?

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Old Nov 17, 2025 | 01:56 PM
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Anyone here tuning with HP tuners?
I have a m278 and would like to bounce some questions off anyone who tunes their merc this route. I have tuned other torque based ECUs but not the merc/bosch
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Old Nov 17, 2025 | 09:52 PM
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Originally Posted by twmg
I have a m278 and would like to bounce some questions off anyone who tunes their merc this route. I have tuned other torque based ECUs but not the merc/bosch
HP Tuners support for Mercedes is very limited. It's not the best tool for the M278.

You'll find much more success and community support using dedicated tools like EuroCharge or DTE Systems. They are the go-to for tuning these Bosch-based Mercedes ECUs.
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Old Nov 18, 2025 | 11:09 AM
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Originally Posted by Alexie
HP Tuners support for Mercedes is very limited. It's not the best tool for the M278.

You'll find much more success and community support using dedicated tools like EuroCharge or DTE Systems. They are the go-to for tuning these Bosch-based Mercedes ECUs.
Albeit it's limited, it should provide enough tables to allow more torque, fuel and timing. I really am not interested in paying a tuning company for a tune. I am going to tune it myself and was looking for info about the logic employed by the oem so I know which parameters to adjust.

I've tuned other torque based ECUs just not this one on the M278/157
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Old Nov 18, 2025 | 05:17 PM
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I think the Mercedes section on HP forum would get you better answers.
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Old Nov 19, 2025 | 12:59 PM
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Originally Posted by RobertR728
I think the Mercedes section on HP forum would get you better answers.
It's limited on there, only like me and one other guy who knows half *** what we are doing. lol
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