When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Yup. No misfires. Yaaaaaaaay. But we are onlt 3 days in. I actually don’t expect that to become a problem. I asked Jake to ask Jerry about the boost for you but haven’t received an answer. They may just not want to advertise it.
Really hoping I can just get back to the AMS performance levels minimum without the misfire issues and gear flopping. I’m sure we’ll get there as there are too many guys with documented success with EC. Of course any performance improvement over AMS would be a very nice bonus.
Btw J,
I think you are worrying too much about the plug and gap topic. Remember, I have a new motor with plugs installed in Germany AMG and I was having the misfires you are getting. Very unlikely that the Germans misclocked the plugs. Plus everybody keeps saying that the stock gap is fine for Stage 2 and less. EC does say on their website that colder plugs are needed for Stage 3. But Stage 3 requires downpipes and different turbos too as I recall and ethanol.
My friends EC tune on 93 octane is running 18 psi in 3rd gear peak... in 4th gear should be a bit more. In a email a year ago, EC told me they run a peak of 22psi on pump 93.. But looks they have made changes and revised their tunes since then.
Sometimes user error with the plugs, but sometimes its aggressive tuning, boost and timing.
Yup. No misfires. Yaaaaaaaay. But we are onlt 3 days in. I actually don’t expect that to become a problem. I asked Jake to ask Jerry about the boost for you but haven’t received an answer. They may just not want to advertise it.
Really hoping I can just get back to the AMS performance levels minimum without the misfire issues and gear flopping. I’m sure we’ll get there as there are too many guys with documented success with EC. Of course any performance improvement over AMS would be a very nice bonus.
Btw J,
I think you are worrying too much about the plug and gap topic. Remember, I have a new motor with plugs installed in Germany AMG and I was having the misfires you are getting. Very unlikely that the Germans misclocked the plugs. Plus everybody keeps saying that the stock gap is fine for Stage 2 and less. EC does say on their website that colder plugs are needed for Stage 3. But Stage 3 requires downpipes and different turbos too as I recall and ethanol.
i still don't get why you were fine for 6 months with the ams tune and then started having issues ... subscribed to see you do then maybe I'll go EC too
Thanks for all your efforts and documentation and contributions to the forum, V!!
Was this on 93 octane, some variation of E85 or race gas?
If this is 93 octane and you have the "E50" tune then you have what I'm running, with very similar numbers.
Add 9 gallons of E85 to 8 gallons of 93 and take her out for a rip. Do a roll on in 3rd gear and just feel the car pull and pull and pull... TC in sport and transmission in Sport+.
This looks like the newest version of the EC tune with a much flatter torque curve. If so, and you have a E63S, then you have a solid 11.0 at 129 mph car on your hands.
Last edited by brutus_tx; Oct 31, 2019 at 06:02 PM.
Was this on 93 octane, some variation of E85 or race gas?
If this is 93 octane and you have the "E50" tune then you have what I'm running, with very similar numbers.
Add 9 gallons of E85 to 8 gallons of 93 and take her out for a rip. Do a roll on in 3rd gear and just feel the car pull and pull and pull... TC in sport and transmission in Sport+.
This looks like the newest version of the EC tune with a much flatter torque curve. If so, and you have a E63S, then you have a solid 11.0 at 129 mph car on your hands.
Brutus - does the E50 tune produce the 630+WHP with only 93 octane? or would you need the E85 mix to get to that level WHP? amazing work EC has done to finally get a tune only 63 running 11 flat.
Was this on 93 octane, some variation of E85 or race gas?
If this is 93 octane and you have the "E50" tune then you have what I'm running, with very similar numbers.
Add 9 gallons of E85 to 8 gallons of 93 and take her out for a rip. Do a roll on in 3rd gear and just feel the car pull and pull and pull... TC in sport and transmission in Sport+.
This looks like the newest version of the EC tune with a much flatter torque curve. If so, and you have a E63S, then you have a solid 11.0 at 129 mph car on your hands.
It was just 93. So conflicting info I get about adding E to these cars, it is safe to? I've never really dealt with this before.
I've been running some version of an ethanol blend in my tank for the last three months. The great thing about this tune is it adapts to varying ethanol concentrations up to E50. I've had as low as E20 in the tank, up to E60 when testing.
Please confirm with EC that your tune can adapt for ethanol. If not, you can still run race gas and get the same effect. My E50 blend gives you an equivalent of almost 100 octane.
If your worried about ethanol, then run some GT Plus or equivalent 104 octane race gas. The tune will adapt timing for the higher octane. These cars love higher octane!
I've been running some version of an ethanol blend in my tank for the last three months. The great thing about this tune is it adapts to varying ethanol concentrations up to E50. I've had as low as E20 in the tank, up to E60 when testing.
Please confirm with EC that your tune can adapt for ethanol. If not, you can still run race gas and get the same effect. My E50 blend gives you an equivalent of almost 100 octane.
If your worried about ethanol, then run some GT Plus or equivalent 104 octane race gas. The tune will adapt timing for the higher octane. These cars love higher octane!
They told me I can blend it, I was just worried as I was reading other views. I'll try it out.
So to give my experience so far, I have had no issues at all. It's only been about a week, but nothing at all has come up. Just goes. Fast.
LOL... well, If you are bone stock, like I am, and you put 9 gallons of E85 (105 octane) in with 8 gallons of 93 (93 octane) for a combined E50 (50% ethanol) at 100 octane, then you too can have this level of performance.
If your worried about ethanol, then replace the E85 with race gas...
If you go full race gas I expect you would make even a little more power because of the headroom in the tune.
Last edited by brutus_tx; Oct 31, 2019 at 10:20 PM.
Reason: typo - the bane of my existence
LOL... well, If you are bone stock, like I am, and you put 9 gallons of E85 (105 octane) in with 8 gallons of 93 (93 octane) for a combined E50 (50% ethanol) at 100 octane, then you too can have this level of performance.
If your worried about ethanol, then replace the E85 with race gas...
If you go full race gas I expect you would make even a little more power because of the headroom in the tune.
brutus - am asking a dumb question I’m sure, but if E85 isn’t available would shell 100 octane basically be the equivalent of E85 + 93 (avg 100 oct) ???? Or is there something different about E85 octane.
If you have access to Shell 100, and it's 100 octane then that is an equivalent octane.
The tune will access different fuel maps and advance timing to create more power.
There are differences beyond octane though between a E50 blend and pure 100 octane race gas. As a minimum, you need much higher injection rates to flow the correct amount of E50 over 100 octane race gas.... in the order of 10/20% more I believe. This will result in worse gas mileage. The E50 blend has additional benefits in that the fuel burns cooler and helps lower EGTs however. As well, for example 17 gallons of 100 octane will probably set you back between $170 and $204 dollars a tank ($10/$12 gallon) where as the E50 blend will cost you 9 gallons at $1.80 E85 and 8 gallons of 93 at $3.00 for a total of around $40.00 a tank.
For me, I have ready access to E85 and 93 at the same pump, so mixing the gas is straight forward and convenient. For those without ready access to E85, race gas may be more practical albeit more expensive.
There are E85 calculator apps available that allow you to quickly determine the fuel ratios you need to achieve a set octane rating.
Last edited by brutus_tx; Oct 31, 2019 at 11:41 PM.
Was this Houston last night?
If you are running 93 octane then you are bang on the numbers based on your trap speed.
If race gas then you are a little low.
I assume you used RS based on your 60ft??
Use brake boost with TC off the next time and you will gain a tenth or two on your time.
Try some race gas or ethanol blend next time and your trap speed will improve as well.
I went out last night and did a quick run on a deserted part of road and ran an 11.1 at 129.7 and a 7.6 60-130 running E50.
Was this Houston last night?
If you are running 93 octane then you are bang on the numbers based on your trap speed.
If race gas then you are a little low.
I assume you used RS based on your 60ft??
Use brake boost with TC off the next time and you will gain a tenth or two on your time.
Try some race gas or ethanol blend next time and your trap speed will improve as well.
I went out last night and did a quick run on a deserted part of road and ran an 11.1 at 129.7 and a 7.6 60-130 running E50.
You must be happy with your numbers.
Yeah that was last night at Baytown. Are you in Houston? It was not quite E50 blend. I'll try more e85 next time. And it was RS.
We also have the AMG Social Club in Houston which is very active. You should consider joining. We will be holding a track event at the Raceway at some point in the future as well.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
