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I would like to thank Chris and the whole team @ AMS for there great customer service, time and attention. I had a mail order tune from them for a while now car was running great with UPD intake spacers / filters and their tune. Last month I added AMS catless downpipes and exhaust, great system! Loud but not obnoxious with no drone. I have a wagon, with the open back exhausts tend to be louder however this system is well tuned for the E63.
As a "car guy" I am always chasing that extra 10hp . I had inquired about having a race file made for a fuel I have used many times in the past with other cars VP MS109. For a unleaded race fuel I feel it's second to none. Emailing with Chris @ AMS was and has been easy and quick. Setup a time for the tuning process, couple of days later it was ready to pickup.
Last edited by Savage212; Sep 8, 2018 at 11:10 AM.
Hahaha so that was your car on the dyno! I will be bringing mine in next week as well for catless down pipes and a tune with them! I had a c63 with catless downpipes I hope it is some what equivalent because I loved it lol
Nice gains --- do you feel the difference? Any CEL's?
i go in 9/21
No CEL, yes you will feel the difference it's night and day. I can't say enough about the work they do there. Really great people who genuinely are all car nuts.
yes, custom dyno tune ... they said they need the car for 6 hours; looking forward to sharing experiences with you on the tune
savage: did you do plugs? Do you have oem plugs and did you re gap them to 0.022
I had the dealer install new OEM plugs about ~2k miles prior. I would assume stock gap as I did not ask for anything different. My car has 56k miles, I had replaced them at 39k also when I got the first tune. It's for peace of mind the plugs I pulled out looked fine, compared to any other "mod" its relatively inexpensive.
Last edited by Savage212; Sep 8, 2018 at 10:45 AM.
Hahaha so that was your car on the dyno! I will be bringing mine in next week as well for catless down pipes and a tune with them! I had a c63 with catless downpipes I hope it is some what equivalent because I loved it lol
yes, custom dyno tune ... they said they need the car for 6 hours; looking forward to sharing experiences with you on the tune
savage: did you do plugs? Do you have oem plugs and did you re gap them to 0.022
Peter, my advice to keep oem plugs, they have correct gap. I haven’t experienced any troubles with them at all. Just have to replace them every ~10k km
Here is the MS109 and 93 pump fuel. I was told they softened up the race gas profile, the torque spike was higher than desired.
how are you switching back to pump gas file? I use ms109 as well. Just throwing it in and after about 10 miles of driving I literally feel the tq get extremely violent. I can’t imagine what it would feel like being tuned for it. Probably great
Peter, my advice to keep oem plugs, they have correct gap. I haven’t experienced any troubles with them at all. Just have to replace them every ~10k km
I might be missing it somewhere but I didn't see clarification that these numbers are at the wheels. The Hp numbers look like what I would expect at the wheels with a 15% drivetrain loss. However, the torque numbers look like what I would expect at the crank. So I may not be understanding your charts entirely. AMS advertises on their site that they can get ~ 830 Lb-Ft of torque at the crank and 700+ Hp at the crank with their ECU tune. I believe this may be a stretch, however, it shouldn't be too far off. BTW, I have exactly your setup without the catless.
I might be missing it somewhere but I didn't see clarification that these numbers are at the wheels. The Hp numbers look like what I would expect at the wheels with a 15% drivetrain loss. However, the torque numbers look like what I would expect at the crank. So I may not be understanding your charts entirely. AMS advertises on their site that they can get ~ 830 Lb-Ft of torque at the crank and 700+ Hp at the crank with their ECU tune. I believe this may be a stretch, however, it shouldn't be too far off. BTW, I have exactly your setup without the catless.
Can you verify what these were? Appreciate it.
Thanks in Advance
honestly it looks about right for a race gas file. I put down 630- 728 tq just on pump gas. Stage 2 , no cats . When I throw on the water meth I get an extra 40 hp at the end of my rev. I just can’t see having a race gas file and I have to constantly put race gas. Wish they can use the sport buttons to swap from pump gas to race file
I might be missing it somewhere but I didn't see clarification that these numbers are at the wheels. The Hp numbers look like what I would expect at the wheels with a 15% drivetrain loss. However, the torque numbers look like what I would expect at the crank. So I may not be understanding your charts entirely. AMS advertises on their site that they can get ~ 830 Lb-Ft of torque at the crank and 700+ Hp at the crank with their ECU tune. I believe this may be a stretch, however, it shouldn't be too far off. BTW, I have exactly your setup without the catless.
how are you switching back to pump gas file? I use ms109 as well. Just throwing it in and after about 10 miles of driving I literally feel the tq get extremely violent. I can’t imagine what it would feel like being tuned for it. Probably great
Different ECU's , one for each file stock, tune and ms109
Ive had good results running 100 tune using 94 pump fuel blended with 15-20% methanol. My ECU adds ~20% fuel at WOT which could exceed the fuel pump capacity at 640whp, so I would not use more than 10% methanol blend with oem fuel setup.
maybe AMS and other tuners can test a ~10% mixture like this on the dyno, if the knock resistance is similar to ms109, it is cheaper, more convenient, and cleaner-burning.
Will AMS ever try to remove the tq limiters in the trans ecu and increase trans presssure?
OP, ive been looking for it but i never found your review on the renntech tcu tune and butt dyno feeling, only the draggy slip posts.. care to share on your intial reactions to the tcu tune
Ive had good results running 100 tune using 94 pump fuel blended with 15-20% methanol. My ECU adds ~20% fuel at WOT which could exceed the fuel pump capacity at 640whp, so I would not use more than 10% methanol blend with oem fuel setup.
I was told the torque spike was to high on ms109. They softened up the boost hit.
As for E85 / methanol fuels, it's my understanding the the existing high pressure fuel pumps (2) cannot keep up. There is a pump in development for the " AMG 43 " engine, TT V6 I believe. I'm told it would be possible to use two of these pumps on the M157. If I recall correctly, the 43's use one high pressure pump. M157 uses two.
Originally Posted by e65
maybe AMS and other tuners can test a ~10% mixture like this on the dyno, if the knock resistance is similar to ms109, it is cheaper, more convenient, and cleaner-burning
All the pumps in my area are "up to 10% ethanol blend" at the pumps. I have to drive a few counties away to get to "straight gas".
Last edited by Savage212; Sep 11, 2018 at 12:08 PM.
Will AMS ever try to remove the tq limiters in the trans ecu and increase trans presssure?
OP, ive been looking for it but i never found your review on the renntech tcu tune and butt dyno feeling, only the draggy slip posts.. care to share on your intial reactions to the tcu tune
I would say seat of the pants it works, power is violent early on. As well as traction control is much more active in both regular and sport modes. Aside from the initial tests with my Dragy, I have not done any more evaluation.
I was told the torque spike was to high on ms109. They softened up the boost hit.
As for E85 / methanol fuels, it's my understanding the the existing high pressure fuel pumps (2) cannot keep up. There is a pump in development for the " AMG 43 " engine, TT V6 I believe. I'm told it would be possible to use two of these pumps on the M157. If I recall correctly, the 43's use one high pressure pump. M157 uses two.
All the pumps in my area are "up to 10% ethanol blend" at the pumps. I have to drive a few counties away to get to "straight gas".
A
I was referring to blending 10% methanol with 10% ethanol Blended fuel. That would increase the octane and also push the fuel pumps close to their limit. Without ethanol, methanol and gasoline is sensitive to phase separation especially at colder temps. Ethanol blended fuel has additives/corrosion inhibitors that straight gasoline might not have. imo more theoretical risk blending methanol with straight gasoline.
I bought the ecm holders per jvakos, thanks!... hopefully they will work but if not I'll have to find a junk ecm with the holders or go to benz and get the parts ...
I bought the ecm holders per jvakos, thanks!... hopefully they will work but if not I'll have to find a junk ecm with the holders or go to benz and get the parts ...
Peter,
Hopefully you saw my post that there should be 2 different part numbers for those ECU standoffs. The fronts are not the same length as the rears. They also are slightly different with their tooling features. Now that you know how to pull out your ECU, take a practice run and look at the standoffs and you will see what I am saying.
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. I had inquired about having a race file made for a fuel I have used many times in the past with other cars VP MS109. For a unleaded race fuel I feel it's second to none. Emailing with Chris @ AMS was and has been easy and quick. Setup a time for the tuning process, couple of days later it was ready to pickup.
