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Recently had the guys at Dyno Comp in Scottsdale Az tune my stock E63s. The tuner for Dyno Comp used to be the Arizona tuner for Renntech. I opted for a ECU, CPC, and TCU tune. Overall my experience was great, tune is fantastic, and the car makes great power. I will break thread down my before and after with dragy runs ect over the next couple of posts.
Here are the stock dragy numbers while the car was completely stock on Arizona craptastic 91 octane fuel and complete garabage DA. From the numbers posted by other members, I think she did okay considering fuel and DA. The zero to sixty was slower than I thought it would be. Car has newer Michelin Pilot Cup 4's. I had them square at 36 psi. Is there a sweet spot for these cars? Car did spin a little, but that is to be expected. Still pulled a 1.75 sixty foot. Road was pretty crappy, but that is exactly what I want. If it runs good on a crap road, it will only do better (in theory) on a good road. Quarter mile was right where I thought it would be. The 60 mph to 130 mph really surprised me. Is a 10.07 slow for a stock set up?
Here is the Dyno sheet with the Dyno Comp ECU and TCU tune before and after. 91 Octane and BMC drop in filters. I guess you can really see where the CPC put the limits to power production on the dyno chart. HP pick up was nice, but the TQ is the really noticeable esp down low and mid range.
I then took the car to the same road and ran the dragy tests again. 0 to 60 mph dropped, but it did feel like it spun harder. 60 foot was quicker to a 1.73, quarter mile was .3 tenths faster, and MPH was up almost 4 mph. I feel it is really limited by the CPC. If I could get the car to launch better on the 4's I am sure it will run a 10.9x as it sits. Car really picked up in the 60 to 130, dropped almost 1.1 seconds.
Not to shabby I think. However, here is some bonus data. I drove it to The High Desert in Southern California. I did some dragy tests out there as well. Temp was 13 degrees colder, altitude was double, and the DA was 700 feet worse.
0 to 60 was 3.29 just a tick slower. Quarter Mile slowed from 11.09 to 11.15, but MPH was up a whole number to 125.5. Might be a really good bracket car in the future. 60 to 130 she really shined...down .32 tenths to a 8.68!
Post reserved for CPC install and post CPC dragy numbers.
I should have the new CPC installed today or tomorrow. I think I need to drive it around for awhile for the adaptive modules to learn. Then I will head back to the test street. I also bought a pair of Catless Downpipes during a Black Friday Sale. I will have those installed soon, and then back to the dyn for a tune revision, and of course more dragy data.
Interesting....It seems I cannot edit my prior posts.
GCA Catless Downpipes came in yesterday. Damn they are really nice. Tabs are nice and strong, welds are super nice, and the heat shielding is attached really well. Not bad for $808 to my door delivered under a week. My fabricator should have some space in his shop next week. Plan is to cut the stock catted downpipes. I have asked him to add v bands to the stock downpipes so they can be reinstalled if the need arises.
Tuned CPC module was installed into the car. I do notice a difference in the good ole butt dyno. I want to put a couple more miles on the car with the new CPC before I go out and rip it on the dragy. Also, with the new CPC I am getting a service overdue by 15,900 miles. I will research into that and see how to remedy that. If anyone has any suggestions please let me know.
Tuned CPC module was installed into the car. I do notice a difference in the good ole butt dyno. I want to put a couple more miles on the car with the new CPC before I go out and rip it on the dragy. Also, with the new CPC I am getting a service overdue by 15,900 miles. I will research into that and see how to remedy that. If anyone has any suggestions please let me know.
I had a similar experience. When I installed my AMR CPC module, I got a CEL and AMR suggested that I disconnect the battery to reset the car's modules and drive the car. I did two, 20 mile, trips which did the trick and cleared the CEL. It has not come back since. The battery disconnect reset the service indicator - I do not recall it showing an overdue service, though.
I had a similar experience. When I installed my AMR CPC module, I got a CEL and AMR suggested that I disconnect the battery to reset the car's modules and drive the car. I did two, 20 mile, trips which did the trick and cleared the CEL. It has not come back since. The battery disconnect reset the service indicator - I do not recall it showing an overdue service, though.
Yeah I had like 295 days until my next service. Now it is saying service over due by 15,900 miles. I am not worried at all. Just wanted to see if anyone else got that as well. No CEL's after my CPC install. I would venture to say the CPC stores some type of memory for service. Best case I just reset the service through the dash. Worst case, I take it to MB and they take care of it.
Interesting....It seems I cannot edit my prior posts.
GCA Catless Downpipes came in yesterday. Damn they are really nice. Tabs are nice and strong, welds are super nice, and the heat shielding is attached really well. Not bad for $808 to my door delivered under a week. My fabricator should have some space in his shop next week. Plan is to cut the stock catted downpipes. I have asked him to add v bands to the stock downpipes so they can be reinstalled if the need arises.
New numbers. Car went a 10.96 on the same crappy street with 36 psi in the tires squared. This was roughly 50 miles after the tuned CPC was installed. The car launches great, but about 200 feet out...it spins pretty violent before the 4matic + gathers it back up. Not a complaint, just an observation. However, the CPC did knock another 2 tenths off the 0 to 60, 2 tenths off the 1/4 mile, and 2 tenths off the 60 to 130. I am pretty happy to say the least.
Over the next couple of days I put another 60 miles on the car. Before these runs I put the tires at Mercedes recommended psi. 41 psi in the front, and 33 psi in the rear. I then went to another street and the car backed up the quarter mile time. Damn thing could be a bracket car. Usually on the 60 to 130 I run the car out to 135+, but on this road I wasn't comfortable doing that, hence no 60 to 130 pull.
By no means am I disappointed or upset about these numbers. However, there is always a way to optimize what I have.
My future immediate plans are to add some Sunoco unleaded 100 to the craptastic 91 octane here in Az. Tuner said that getting the octane to the 93/94 octane level will allow the car to pick up even more. So back to the crappy road soon with the 93/94 octane mix to see if the big end picks up.
The Pilot 4s on my car are fairly new. However, even with a 1.72 sixty foot, it feels like it spins pretty hard around the 200 foot mark on the crappy road and the good road. A 3.16 is the best I have ever had 0 to 60. Yet I see people post 2.90 and 3.00's regularly on the same tire. What are you guys running for air pressure? I am not opposed to putting a drag radial on the car.
I know my DA isn't the greatest, the 1381 is the best I have seen so far. So I will just have to deal with that.
I am waiting on my fab guy to install my catless DP's as well. Hopefully I can get those on and the have the car re-tuned by Christmas.
No problem. I am data guy through and through. I really enjoy it. Thank you for your thread as well, it was super helpful.
I could not agree more, empirical data is what counts. As a data point for you, here are the numbers I obtained after my AMR ECU/TCU/CPC Stage 1 tune. I was running 93 Octane and on PS4s. My DA was a little worse than yours and your run had slightly more favourable gradient.
I could not agree more, empirical data is what counts. As a data point for you, here are the numbers I obtained after my AMR ECU/TCU/CPC Stage 1 tune. I was running 93 Octane and on PS4s. My DA was a little worse than yours and your run had slightly more favourable gradient.
Thank you for the data. What tire pressure are you running your PS4's?
Thank you for the data. What tire pressure are you running your PS4's?
Recommended cold pressures i.e. 41 PSI (front) and 33 PSI (rear). I did not make a note of the dynamic pressures but they were probably around 3-4 PSI higher.
Recommended cold pressures i.e. 41 PSI (front) and 33 PSI (rear). I did not make a note of the dynamic pressures but they were probably around 3-4 PSI higher.
Thank you for the response. That is where I am going to being running mine going forward.
