Anyone try the new Renntech ECu
 

Anyone try the new RennteckHHT handheld ECU set-up ?

Hello,
Yes this looks interesting. My X6M had a HHT from Velos designwerks, and it was great. It made it easy to go back and forth from tuned to stock. Here is the link for the Renn:
Cheers,
https://www.renntechmercedes.com/ind...13-e63s-detail

so, how does it work ? Just plug that into the OBD port and switch to 'stock' or 'tune' ?

Interested in the Renntech ECU also but wondering if any other reputable shops provide a cheaper alternative with similar performance. Also, since I'm in California and don't have access to octane higher than 91, is getting a tune basically a waste of money?

Is this not similar to the OBD port tunes that all the other tuners are doing now? EC told me last I was there they can do it for the M177 as well using the MyGenius handheld

That's pretty much it. When ordering, you have to supply us with your VIN, we then pre-load the module with the tune.
So when you receive the tuner, it's ready to go. No need to download a software to your computer, load the tuner, etc.

When you receive the module, make sure the toggle switch is set to tuned, car in key position 2 and then plug the module in your OBD2 port.
The little LED turns red and starts loading. After about 2 minutes the LED turns green and the process is done.
You can now unplug the module and you're good to go.

If you decide you want to go back, just repeat the process with the toggle switch moved to stock. You can switch between tuned and stock as often as you like.

So I just noticed the 93+ octane - It's almost impossible to find anything higher than 91 in Utah ( unless you go to a race gas center, and that is a P.I.T.A.) wonder if that is an issue for the tune.. detonation?

so pre loaded basic tune with no further calibration ?

Related to the above question, is the module updatable so that we have access to new/revised tunes?

We still offer a tune for 91 octane. Same process, same module.

We still can do customization. But if not noted/discussed directly, it will be our highest power ECU Upgrade.

Well I got the new Renntech handheld ECU downloaded and WoW! That thing wakes the sleeping giant. Just for fun, I did a launch control to 60 and did 2.88 .. keep in mind that is on 91 octane and at 5000 feet above sea-level. Happy Customer

We are now able to do the W213's with the Handheld as well if you were interested :)

Eurocharged is currently offering their tune for $1500 vs Renntech's that is close to $4000. Is tuning pretty much cookie cutter now or is there any real benefit left to visiting a local tuning shop with a dyno? Are any tunes open source in that the customer can see what actually was changed vs just seeing the end result? Does Renntech have some secret sauce in their tune or are they just more expensive due to their higher marketing and overhead costs?

Yes, I am very interested. You guys really supplied both a great tune, and great support for my BMW X6M. I will contact you. Is this the same, specifically with the myGenius?
Cheers

Appreciate the kind words and yes same process as your X6M. Can send me a PM or email at stephen@velosdesignwerks.com whenever you are want.

I wish they were open sourced. You’d need somebody to extract the maps out of the (probably obfuscated/encrypted) MyGenius map files.

I got my OETuning tune for $1,300 all in with the device. Is there a Eurocharges/Renntech tune out there with 25hp more? Probably...