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If that was the case however, a tuned 400 would make the same stats as a tuned 450. They don't though.
I'm not saying that they make the same power, C450/C43 have extra 30+ hp. I'm just saying most of the mechanical parts are the same, so it would be useless to swap C450/C43 turbos on C400.
If you were gonna swap turbos you might as well get completely hybrid turbos from a tuner and skip the 450/43 turbos
Lightly used ones are <1k for a set, a tuner is going to have you paying a lot more than that.
Originally Posted by allanyeung99
I'm not saying that they make the same power, C450/C43 have extra 30+ hp. I'm just saying most of the mechanical parts are the same, so it would be useless to swap C450/C43 turbos on C400.
I know, it was just an idea. The turbines are different supposedly.
If that was the case however, a tuned 400 would make the same stats as a tuned 450. They don't though.
If there are differences across the years of the turbo's its very slight changes in the angles of the fins, not a larger housing. Wouldn't be worth the cost and effort to swap them.
You can make the same boost levels with a C400 as you can a C43 and run the same times. Most off the shelf tunes quote different numbers across the years because they are just stacking boost to a stock curve, start with 2-3psi lower and new gains after adding 6psi will be lower.
The main difference I see is that the 9G pulls better 0-60 but lower trap and the 7G has slightly slower 0-60 and higher trap in 1/4 due to gearing. I run the same times as a lot of stage 2 tuned C43s, Our logs look the same, the draggy times are the same for 1/4. I just apparently cant launch as well as the 9G cars.
"Not much fun trolling a dead forum" - Whether or not the turbos are different across the M276 variants has been a debated and divided topic.
CLS400-3"downpipes cls63 exhaust and bbk BMS intake AMR rv3.1, 12.1@119mph 1.9 60'
Originally Posted by MatthewJ
If there are differences across the years of the turbo's its very slight changes in the angles of the fins, not a larger housing. Wouldn't be worth the cost and effort to swap them.
You can make the same boost levels with a C400 as you can a C43 and run the same times. Most off the shelf tunes quote different numbers across the years because they are just stacking boost to a stock curve, start with 2-3psi lower and new gains after adding 6psi will be lower.
The main difference I see is that the 9G pulls better 0-60 but lower trap and the 7G has slightly slower 0-60 and higher trap in 1/4 due to gearing. I run the same times as a lot of stage 2 tuned C43s, Our logs look the same, the draggy times are the same for 1/4. I just apparently cant launch as well as the 9G cars.
"Not much fun trolling a dead forum" - Whether or not the turbos are different across the M276 variants has been a debated and divided topic.
agreed..its the 9g trans plus awd that gives them the edge.
If that was the case however, a tuned 400 would make the same stats as a tuned 450. They don't though.
Hi, commented on your CLS post, congrats on it! I too noticed that tuners advertise more power for 450/43 engines than the 400's. I've been tuned with Eurocharged Houston since May of last year. Jerry quoted that it makes about 430hp/460 pound feet. I'm getting my ECU updated for a retrofit, and I need to send them the stock file again as the old tune file won't work because of the update. So as all of this has been going on for the past week or so, I noticed that Eurocharged Canada for the 400/450/43 offer the same gains, and that is between 460-480HP, and 520-540 pound feet of torque.
I looked at their Instagram and saw a whole bunch of C400's and E400's getting a tune, and they always stated that they make those numbers. I asked EC Canada why their stage 1 tune makes more power than EC Houston's stage 1, and they stated that they've done more research and development for their tune, and have released versions over the years, and currently the version is V3. I DM'd someone with a C400 who got their stage 1 tune, and got it dyno'd there on the stage 1 V3 software, and his dyno numbers were 407.93WHP, and 466.91WTQ. Multiply these numbers by 1.2 (his car is 4MATIC) to get the approx crank numbers, and they correlate with that EC Canada states. I will be switching over to EC Canada's stage 1 probably next week. This guy also gave me his dragy times for his C400 4matic was able to get 3.98. With our CLS400's being heavier, I'm sure we could be in the 4.0-4.2 range.
Here is the dyno he gave me, V2 vs V3 tunes, both stage 1:
Last edited by Idklol69; Mar 19, 2021 at 03:16 AM.
CLS400-3"downpipes cls63 exhaust and bbk BMS intake AMR rv3.1, 12.1@119mph 1.9 60'
Originally Posted by Idklol69
Hi, commented on your CLS post, congrats on it! I too noticed that tuners advertise more power for 450/43 engines than the 400's. I've been tuned with Eurocharged Houston since May of last year. Jerry quoted that it makes about 430hp/460 pound feet. I'm getting my ECU updated for a retrofit, and I need to send them the stock file again as the old tune file won't work because of the update. So as all of this has been going on for the past week or so, I noticed that Eurocharged Canada for the 400/450/43 offer the same gains, and that is between 460-480HP, and 520-540 pound feet of torque.
I looked at their Instagram and saw a whole bunch of C400's and E400's getting a tune, and they always stated that they make those numbers. I asked EC Canada why their stage 1 tune makes more power than EC Houston's stage 1, and they stated that they've done more research and development for their tune, and have released versions over the years, and currently the version is V3. I DM'd someone with a C400 who got their stage 1 tune, and got it dyno'd there on the stage 1 V3 software, and his dyno numbers were 407.93WHP, and 466.91WTQ. Multiply these numbers by 1.15 to get the approx crank numbers, and they correlate with that EC Canada states. I will be switching over to EC Canada's stage 1 probably next week. This guy also gave me his dragy times for his C400 4matic was able to get 3.98. With our CLS400's being heavier, I'm sure we could be in the 4.0-4.2 range.
Here is the dyno he gave me, V2 vs V3 tunes, both stage 1:
Problem is.. nobody has data for cls400 (c400) it wasn't supposed to be tuned or fast. In My platform.... the cls63 and 550 are the performers .. The tuners focus on c400 (Per web site), c450, c43 because of same motor (m276). and obviously the turbos one is suppose to be better.. If you get everything fine tuned with the m276 you will see similar results across the board. damm .. lenny-tuner (former renntech tuner) had a c400 running 11.6 or so maxing out fuel trims years ago. Tuners will say otherwise because frankly they haven't tuned as many of the lower range non amg platforms as the others.. Everything is pretty much a generic number. Moving forward, the cls is a 500lbs heavier car. c400,c450,c43 is the reason i am here and didn't just get the highest model available. hence slower times. This season i plan to get this car in the high 10's..Its possible thx to our fellow members sharing info..stay tuned
Problem is.. nobody has data for cls400 (c400) it wasn't supposed to be tuned or fast. In My platform.... the cls63 and 550 are the performers .. The tuners focus on c400 (Per web site), c450, c43 because of same motor (m276). and obviously the turbos one is suppose to be better.. If you get everything fine tuned with the m276 you will see similar results across the board. damm .. lenny-tuner (former renntech tuner) had a c400 running 11.6 or so maxing out fuel trims years ago. Tuners will say otherwise because frankly they haven't tuned as many of the lower range non amg platforms as the others.. Everything is pretty much a generic number. Moving forward, the cls is a 500lbs heavier car. c400,c450,c43 is the reason i am here and didn't just get the highest model available. hence slower times. This season i plan to get this car in the high 10's..Its possible thx to our fellow members sharing info..stay tuned
You're right about people not having data specifically for the CLS400, but that C400 on the dyne graph is a 2015 and is the exact engine in the CLS400, therefore that stage 1 tune file's should have the same WTQ/WHP #'s. And yup, it's always about the C400 when it comes to tuners probably because this CLS400 is so rare, it's even hard to find stuff on the internet about it. Honestly can't wait to feel the difference with this tune as it's adding +40hp and +70 pound feet from my current tune.
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