GT/C192/R192: well... we'll know more about the Renntech RPM very soon hopefully.
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From: THE Orange County, California
2024 C8 Z06- 2025 BMW CS- 2022 Porsche 992 GTS
its like a damn Yamaha banshee 2 stroke old quad/atv death traps if you didn't know what you're doing.... nothing nothing nothing, wheelie, dead, and banshee screaming down the trail with no one on it.
Does the XLR, when installed, eliminate, or affect any of sport, sport+, comfort etc when you change the modes on the car itself?
Does the XLR, when installed, eliminate, or affect any of sport, sport+, comfort etc when you change the modes on the car itself?
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Joined: May 2022
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2025 AMG GT 55; 2022 e53 coupe: 2019 e450 coupe
Installer recommendations
Any recommendations for an installer for the Renntech chip and valve controller in the greater Atlanta area?
No way to get under the car and don't have small hands!
No way to get under the car and don't have small hands!
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Joined: May 2022
Posts: 64
Likes: 17
2025 AMG GT 55; 2022 e53 coupe: 2019 e450 coupe
Got a quote for $1250 and $925 for the installation of both modules. Is that reasonable for a large metropolitan area?
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Joined: Jul 2023
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2019 G63 AMG & 2024 AMG GT63
I dont know any shops in Atlanta.
It took me maybe 45 min to install the RPM tuning module. It's quite simple, just 2 of the connections are difficult to reach. But I would think a shop could get to them from the bottom or with a special tool quite easily. So depending on their hourly labor rate, 1250.00 sounds high to me. at 250.00/hr shop rate, they're saying itll take 5 hours. Which is wayyyyy overboard would likely take them 30-45 min at the most. Not to mention 250.00/ hr is high for shop labor rate. I want to say franchise MB service departments are usually 150-250/hr depending on the area. So if its a low overhead independent shop, I would not think their labor rate is as much as a Mercedes Benz dealer, but thats anyones guess. There is no parts needed to install the RPM other than what comes in the box, unless someone wanted some type of highly custom type of install where the RPM box itself is bolted to the car or something like that, would need some fasteners etc. But thats not really necessary either.
Valve controller, not sure, I dont have that modification and no idea what installation involves.
Are these 2 diff shops ? 1250 and 925 individually for each mod? or 2 diff quotes for installing both ?
I would not pay more than 2-300.00 to have the RPM installed. But I also didn't shop around, I just did it myself.
It took me maybe 45 min to install the RPM tuning module. It's quite simple, just 2 of the connections are difficult to reach. But I would think a shop could get to them from the bottom or with a special tool quite easily. So depending on their hourly labor rate, 1250.00 sounds high to me. at 250.00/hr shop rate, they're saying itll take 5 hours. Which is wayyyyy overboard would likely take them 30-45 min at the most. Not to mention 250.00/ hr is high for shop labor rate. I want to say franchise MB service departments are usually 150-250/hr depending on the area. So if its a low overhead independent shop, I would not think their labor rate is as much as a Mercedes Benz dealer, but thats anyones guess. There is no parts needed to install the RPM other than what comes in the box, unless someone wanted some type of highly custom type of install where the RPM box itself is bolted to the car or something like that, would need some fasteners etc. But thats not really necessary either.
Valve controller, not sure, I dont have that modification and no idea what installation involves.
Are these 2 diff shops ? 1250 and 925 individually for each mod? or 2 diff quotes for installing both ?
I would not pay more than 2-300.00 to have the RPM installed. But I also didn't shop around, I just did it myself.
Last edited by ffejnotrom; Feb 3, 2026 at 03:32 PM.
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Joined: Nov 2001
Posts: 12,251
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From: THE Orange County, California
2024 C8 Z06- 2025 BMW CS- 2022 Porsche 992 GTS
ffejnotrom already knows the RC part down pat and said its pretty easy (I had my guy do it cause he was lowering my car and doing spacers etc at the same time).
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Joined: May 2022
Posts: 64
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2025 AMG GT 55; 2022 e53 coupe: 2019 e450 coupe
I dont know any shops in Atlanta.
It took me maybe 45 min to install the RPM tuning module. It's quite simple, just 2 of the connections are difficult to reach. But I would think a shop could get to them from the bottom or with a special tool quite easily. So depending on their hourly labor rate, 1250.00 sounds high to me. at 250.00/hr shop rate, they're saying itll take 5 hours. Which is wayyyyy overboard would likely take them 30-45 min at the most. Not to mention 250.00/ hr is high for shop labor rate. I want to say franchise MB service departments are usually 150-250/hr depending on the area. So if its a low overhead independent shop, I would not think their labor rate is as much as a Mercedes Benz dealer, but thats anyones guess. There is no parts needed to install the RPM other than what comes in the box, unless someone wanted some type of highly custom type of install where the RPM box itself is bolted to the car or something like that, would need some fasteners etc. But thats not really necessary either.
Valve controller, not sure, I dont have that modification and no idea what installation involves.
Are these 2 diff shops ? 1250 and 925 individually for each mod? or 2 diff quotes for installing both ?
I would not pay more than 2-300.00 to have the RPM installed. But I also didn't shop around, I just did it myself.
It took me maybe 45 min to install the RPM tuning module. It's quite simple, just 2 of the connections are difficult to reach. But I would think a shop could get to them from the bottom or with a special tool quite easily. So depending on their hourly labor rate, 1250.00 sounds high to me. at 250.00/hr shop rate, they're saying itll take 5 hours. Which is wayyyyy overboard would likely take them 30-45 min at the most. Not to mention 250.00/ hr is high for shop labor rate. I want to say franchise MB service departments are usually 150-250/hr depending on the area. So if its a low overhead independent shop, I would not think their labor rate is as much as a Mercedes Benz dealer, but thats anyones guess. There is no parts needed to install the RPM other than what comes in the box, unless someone wanted some type of highly custom type of install where the RPM box itself is bolted to the car or something like that, would need some fasteners etc. But thats not really necessary either.
Valve controller, not sure, I dont have that modification and no idea what installation involves.
Are these 2 diff shops ? 1250 and 925 individually for each mod? or 2 diff quotes for installing both ?
I would not pay more than 2-300.00 to have the RPM installed. But I also didn't shop around, I just did it myself.
Junior Member
Joined: May 2022
Posts: 64
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2025 AMG GT 55; 2022 e53 coupe: 2019 e450 coupe
