Recent content by ManuelB

Officially no. But they can do it. There's a catch, the ECU must be open for disabling RSA encryption. I still prefer the first approach of reading immo data and clone it to an unlocked MG1 from the A45S. I've tuned a few of those A45 S with M139 and the potential is huge.

They just sent me the confirmation that they are about to announce their new service for unlocking the i4 ECU for OBD/BENCH read/write! :-)

Congratulations on this fantastic achievement! 👏👏 Truly a huge step forward for the Emira platform. At our workshop we also work with Flex, so I’m really curious — would you be able to share the BOSCH Part Nr. (0261xxxxx) of the unlocked unit you used as the base? We have a few units in stock...

When it comes to the AMG M139 engines (A45s, CLA45s, etc. 2022+) there’s a lot of confusion online, so here’s the reality: Mercedes-AMG (A45s / CLA45s 2022+) Starting from 2022, Mercedes introduced much stronger security on their ECUs. In addition to the Bosch MG1 ECU, there’s also the CPC...

Zero CEL so far!

I just wanted to take a moment to thank docron for the amazing JB4 OBD wire routing DIY post. The step-by-step instructions were incredibly detailed and clear, and I really appreciate the effort that went into explaining everything so thoroughly. It saved me a lot of time and frustration, and...

Thanks for the feedback! Using JB4 PRO with the BT dongle installed at JB4?

Yeah! Even with just the Mach5 downpipe, the sound at full throttle is already amazing — aggressive and sharp! And the pops during gear shifts and deceleration are absolutely out of this world. I can only imagine how insane it would sound with an upgraded rear muffler too.. hehe :-D

That's great! 400 hp US version? At crank, right? Thank's for sharing! JB4 just arrived. Gonna mount it this week. Already installed the MACH5 GPF off, sports cat. It was a PITA to remove the original one..

LTFT at 34% ??? God... that's a lot! How much more boost is it making? I'm currently waiting for the JB4 to arrive so I can run some tests. In the meantime, I've been checking the wiring and I’m planning to tap into the CAN bus near the engine bay instead of running a cable all the way to the...

Thank you!! I believe you’ve already tested E30 on the Emira — mind sharing which JB4 map you used for it? Also curious to know: Any noticeable performance gains? Did you log fuel trims or AFRs? How’s the cold start and driveability? Would be great to know how the M139 reacts to E30 on the...

For anyone interested in official numbers, here are the dyno results published by Burger Motorsports for the JB4 on the Lotus Emira AMG i4 (M139): Dyno Results: Baseline (91 Octane): 387.5 hp / 311.5 lb-ft JB4 Map 1 (91 Octane, IAT Spoof): 422.9 hp / 354.9 lb-ft JB4 Map 2 (93 Octane): 439.2 hp...

Hi all, For those specifically interested in the JB4 for the AMG i4 (M139) engine, I’ve just created a dedicated thread so we can keep all the info, tips, results, and troubleshooting in one place: 👉 JB4 Thread for Lotus Emira AMG i4 (M139 Engine) – Tuning, Setup, Results & Support Let’s use...

Hi everyone, I noticed that most JB4 discussions here are mixed between the V6 and the AMG i4 engines, which can make it difficult to find specific info for each setup. To help keep things organized and easy to access, I’m starting this dedicated thread for everything related to the...