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I just ordered a Renntech Handheld tune.
It’s not one where you put it in the obd, let it load, then go.
anyone have any experience with this tune?
I have the 4.0tt
Sounds interesting. Let us know how you like it after it is installed.
I’m excited.
It is hand held, so you plug it in, load the tune, take it out, drive with the tune.
Says you can take it off as well.
it has a toggle switch and RENNtech seems to be the most well researched in this space.
Tonight I tuned my 222.
I used the Renntech Hand Held Tuner.
I put the start in position 2, plugged the tuner into the obd port and waited until the light turned green.
I took it out, shut the car.
Waited a min and started it up and went out for a drive.
This car used to feel like a 747 to me, but now it feels like the Concorde.
The tune wakes this car up but not to the point that it kills daily driving.
The take offs are more ridiculous and the passing is just silly.
I want to mention that with this device you can flash back to the stock tune.
The tune makes the car put out like 580 something of HP and like 650 ftlb of torque.
Delivery of the power is smooth and not jumpy.
I have tuned other cars in the past and the tunes required some tweaking, but this tune seems safe and not overturned.
I would highly recommended this hand held tuner for those that want to extract more juice from this.
I ran xentry after my drive and no codes.
I was looking forward to tuning today. Followed updates on ups site, saw it was out for delivery, but he came early today.
I came home and saw I missed the ups man, so I drove around looking for him.
i was bummed. About 2 hours later he shows up, saw I was home and didn’t want me to wait, I was so happy, I hate waiting.
My only complaint is I asked for a Renntech badge for the trunk and I didn’t get it, but I am sure they will send me one.
Well worth it.
Last edited by vinflouen; Feb 22, 2023 at 01:43 AM.
Tonight I tuned my 222.
I used the Renntech Hand Held Tuner.
I put the start in position 2, plugged the tuner into the obd port and waited until the light turned green.
I took it out, shut the car.
Waited a min and started it up and went out for a drive.
This car used to feel like a 747 to me, but now it feels like the Concorde.
The tune wakes this car up but not to the point that it kills daily driving.
The take offs are more ridiculous and the passing is just silly.
I want to mention that with this device you can flash back to the stock tune.
The tune makes the car put out like 580 something of HP and like 650 ftlb of torque.
Delivery of the power is smooth and not jumpy.
I have tuned other cars in the past and the tunes required some tweaking, but this tune seems safe and not overturned.
I would highly recommended this hand held tuner for those that want to extract more juice from this.
I ran xentry after my drive and no codes.
I was looking forward to tuning today. Followed updates on ups site, saw it was out for delivery, but he came early today.
I came home and saw I missed the ups man, so I drove around looking for him.
i was bummed. About 2 hours later he shows up, saw I was home and didn’t want me to wait, I was so happy, I hate waiting.
My only complaint is I asked for a Renntech badge for the trunk and I didn’t get it, but I am sure they will send me one.
Well worth it.
Happy to hear you are enjoying it. I traded in my 2015 along with the tune module and will be buying again for my 2019 that I just bought. I have to say it’s the most enjoyable upgrade I have made to any car!
Happy to hear you are enjoying it. I traded in my 2015 along with the tune module and will be buying again for my 2019 that I just bought. I have to say it’s the most enjoyable upgrade I have made to any car!
it’s so fun!
I don’t drive too rough, but it’s just faster now.
much less pressure on the pedal and it’s taking off nicely.
They did a good job with this tune as it is not aggressive, but I did a small throttle drop on the highway and that was a lot of thrill….it pushes you into the seat the way an airplane with very few passengers and bags does on take off.
it’s so fun!
I don’t drive too rough, but it’s just faster now.
much less pressure on the pedal and it’s taking off nicely.
They did a good job with this tune as it is not aggressive, but I did a small throttle drop on the highway and that was a lot of thrill….it pushes you into the seat the way an airplane with very few passengers and bags does on take off.
Which of the 2 tunes did you get? The one that requires 93+? What happens if someone puts in 87 by accident. Will the car protect itself with knock sensors or will the engine destroy itself. I say this because they are extremely explicit on Octane Grade. What if a station has the wrong grade in a tank? You think you have 93+ and your running 89.... Just curious.
I wanted it until I saw the price. I'll stick with the 463 horses for now I guess.
Would be nice to have tho.
price vs value……..
it’s an age old equation that everyone calculates differently.
They will throw in a RENNTECH badge for the trunk and that alone will add 17hp…..lol
Which of the 2 tunes did you get? The one that requires 93+? What happens if someone puts in 87 by accident. Will the car protect itself with knock sensors or will the engine destroy itself. I say this because they are extremely explicit on Octane Grade. What if a station has the wrong grade in a tank? You think you have 93+ and your running 89.... Just curious.
I got the 93 octane.
If someone puts in 87, it’s no accident and they will get strangled (I’m kidding!!)
If you stick with major gas brands you should be able to avoid this.
if it happens, you don’t drive hard so you don’t create knock…..this car has LOTS of sensors…
Anything can happen…..
05 SL55, 10 C63, 12 SLK3, 20 S560, 08Bentley GT Speed, 16 Aston Martin Vanquish
This RENNtech tune for the S560 sounds like the way to go. But I think I’ll wait until they have a sale. I think that the Black Friday sale was like 15% off.
Guess I’ll just have to wait. The car isn’t under powered as it is.
This RENNtech tune for the S560 sounds like the way to go. But I think I’ll wait until they have a sale. I think that the Black Friday sale was like 15% off.
Guess I’ll just have to wait. The car isn’t under powered as it is.
the car is not underpowered for sure, but this makes it faster with less effort.
Nice Ride;
It will pull spark timing if octane is lower than needed, so no worries. It will pull too much timing, but better that than not enough. You should check it because mine, even stock, would pull timing anyway. I think mine really needs 95 octane. It may also pull boost and throttle. As a result I retarded timing just enough to work on my 91 pump gas and it netted me a good chunk of power.
You can use a simple app like Torque Pro to see, then ask the tuner to retard xx amount. I'd assume they could make a new file to load so you can keep the other?
Optionally you could add E85, which is what I do now. Mine needed 30-35% Ethanol to run oem timing. Adding E85 to a car not meant to use it is risky because it may not be able to deliver it. So you need to watch/chart it with the app to be sure. Mine can deliver a mix of 50% Eth, which is a '16 E550, M278 4.6L.
most other cheap tunes are just standard DAMOS files from a database bought or downloaded
Tuning is a job. The other way is to go to a tuner with reputation. On dyno they will find the best settings and map to get your car, with your mileage, to produce the most power.
The main problem is that consumes rarely buy a cheap tune then a high-end tune and compare....
So yes, every user will find more HP, but will never know what they missed or not
Now you know what is behind the curtain
“The bitterness of poor quality remains long after the sweetness of low price is forgotten.”
― Benjamin Franklin
Last edited by BenzNinja; Jul 10, 2023 at 05:52 PM.
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