Anyone ever use united performance engineering?
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Joined: Mar 2025
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c63
Anyone ever use united performance engineering?
Seeking feedback on United Performance Engineering for custom ECU/TCU tuning.
https://www.instagram.com/unitedperformanceengineering/
https://www.instagram.com/unitedperformanceengineering/
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Joined: Dec 2025
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G63 4x4 Squared
UPE for the win!
We run a tuning company in the UK called PPL Tuning, and we use United Performance Engineering for all of our software.
We work directly with UPE and have done for a long time now. The software is very well developed, consistent, and reliable, and the support he provides is genuinely the best we’ve experienced.
He also holds the record for the fastest W213 E63 Stage 3 build, which really speaks for itself in terms of real-world performance. From our experience, UPE is absolutely a company we trust and are happy to stand behind.
We work directly with UPE and have done for a long time now. The software is very well developed, consistent, and reliable, and the support he provides is genuinely the best we’ve experienced.
He also holds the record for the fastest W213 E63 Stage 3 build, which really speaks for itself in terms of real-world performance. From our experience, UPE is absolutely a company we trust and are happy to stand behind.
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Joined: Aug 2019
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CLA 45 AMG
I have been using his tunes for over two years now, and they are amazing.
I first started tuning my own cars with him because I wasn’t happy with my previous tuner (I won’t mention any names).
The first car he tuned for me was my E63 W213. The car was very fast, and most importantly, all engine safety systems are still active. That means if the engine has a problem, the check engine light still works – nothing important is disabled.
About two months ago, we also did a new CPC and TCU tune for my E63. Now even the standstill rev limiter is removed, and I can rev the car up to 7,200 rpm.
For more than 1.5 years now, I’ve also been offering his tunes to my customers here in Switzerland, because I know he really knows what he’s doing and doesn’t disable safety systems like some others do.
On my E63 W213, I only have a Pipercross air filter and his ECU, TCU, and CPC tunes. The car runs 100–200 km/h in 5.89 seconds.
So far, I’ve tuned more than 50 cars here in Switzerland with his software, and none of my customers has ever had any problems.
On Instagram, you can see most of the cars he tuned for me:
https://www.instagram.com/mercedes_coding_schweiz/
I first started tuning my own cars with him because I wasn’t happy with my previous tuner (I won’t mention any names).
The first car he tuned for me was my E63 W213. The car was very fast, and most importantly, all engine safety systems are still active. That means if the engine has a problem, the check engine light still works – nothing important is disabled.
About two months ago, we also did a new CPC and TCU tune for my E63. Now even the standstill rev limiter is removed, and I can rev the car up to 7,200 rpm.
For more than 1.5 years now, I’ve also been offering his tunes to my customers here in Switzerland, because I know he really knows what he’s doing and doesn’t disable safety systems like some others do.
On my E63 W213, I only have a Pipercross air filter and his ECU, TCU, and CPC tunes. The car runs 100–200 km/h in 5.89 seconds.
So far, I’ve tuned more than 50 cars here in Switzerland with his software, and none of my customers has ever had any problems.
On Instagram, you can see most of the cars he tuned for me:
https://www.instagram.com/mercedes_coding_schweiz/
