JB4 is here!
That was the most important thing it needed. The ZAC stuff looks to be something custom for larger turbos, I haven't seen anything for a production piece.
Anyways, our intakes will be out soon! The final revision is complete and we're popping them out as I type. ETA mid June
upgraded turbos, Dual 7 and higher depending on how much extra fuel you will need. We'll have more test results up soon, I'll make another thread for it when the time permits.
That was the most important thing it needed. The ZAC stuff looks to be something custom for larger turbos, I haven't seen anything for a production piece.
Anyways, our intakes will be out soon! The final revision is complete and we're popping them out as I type. ETA mid June

Yes planning to go with Ethanol and or Race Gas, then Water/Meth when that kit is available, maybe upgraded turbos in a year or so.
Yes, just need to learn and understand how to play with the BRBG feature, stock tires but the rears are bald at 8K miles so going stickier and wider (305) probably Nittos
The Best of Mercedes & AMG
I currently have JB4 installed. Yes it was a hassle as they don’t give you room to move wires. My fat hands had a hell of a time!
Also do the Bluetooth gave me some problems.. I had to actually hard solder it to the box as there was no plug in. It worked! But not sure what went wrong there..
Im currently running weistec w3 turbos, downpipes, DME Tune and weistec air boxes. I’ll tell you the jb4 really took my GLC to the next level.
Here are are photos of after install:
When Im in map1 or map2 I get:
P0100: Mass Air Flow Circuit Malfunction
P0057: HO2S Heater Control Circuit Low (bank2, sensor 2)
Wondering if anyone else has had them? I talked to another guy with a GLC63 and he is getting samething.
Maps 1&2 should be plug-n-play. Good luck.
When people have issues with their car we're always here to provide advice and support as we're doing in this support thread! If you don't want to hear about issues and their resolution don't hang out in support threads.






