Kleemann K-Box for E400
 

ordered it today. getting it tomorrow. can't wait to install and test. Will post how it goes.

installation took 5 mins. Didn't notice any change in the drive. Anyone used one? see any difference? is there a way to adjust it? I see references to adjustments but can't find any documentation indicating why/how to make adjustments.

I am assuming the K-Box is a tuning device? If so, you should see quite a difference in the power delivery.

have you tried calling them? they are based out of Colorado. Post up what they say and if you notice any difference. Thanks.

Yes, please keep us posted. Is your the M276 DELA 30 or 35 biturbo and what is the part number for your K-Box? They also offer a box for the AMG E450, under the same part number! Don't know if this is a typo but the tuners should specify the engine model as well as the car model.

emailed them. I have the right unit for 3.0 BiTurbo. I was told to drive it more as the adaptations affects it apparently. Will have driven a few hundred miles by weekend so will see if i notice a change..i hope it works otherwise I'll have to send it back.

Any update, did the performance improve?

don't waste your time. sent it back after 500 miles of driving..made zero difference..don't know, to be fair, if the unit they shipped was faulty or if it was working and made no difference.

I have one in my C400 and it took a bit for me to notice a difference. I was expecting something more from it to be honest. I removed it and will be sending my ecu in for a tune instead. I know we are not the only ones with the kbox on here. I would love to hear other peoples opinions on them.

Me too. I'm looking at investing in the renntech tune. The kbox really only works at the high rev points around 3500 plus. It increases the turbo and fuel. At 70mph my E400 barely hits 2000 rpm. Ecu tune will modify a greater range and shifting.

Would love an update if you did go RENNTech and what were the results?