Ethanol Sensor installation
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Senior Member
Joined: Feb 2005
Posts: 253
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From: Bay Area, CA
05 C55-gone 06 E55-gone 15 P85D 14 E63 S 11 Sonata 😅
Ethanol Sensor installation
Does any have any instructions or a DIY video on an ethanol sensor on a m157?
Im about to order one from Spool but wanted to see how hard it is to install
Im about to order one from Spool but wanted to see how hard it is to install
Super Member
Joined: Oct 2020
Posts: 662
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From: ILLINOIS
2014 E63S
I don't have any instructions on how to install, but I had my local eurocharged install mine for 150 bucks. Took them little more than 1hr
Thread Starter
Senior Member
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From: Bay Area, CA
05 C55-gone 06 E55-gone 15 P85D 14 E63 S 11 Sonata 😅
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Joined: Aug 2019
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From: Minnesota
Mercedes Benz C450 AMG
Install instructions (Spool)
I do have a question for everyone installing the Spool Ethanol analyzer.
The instructions show the filter ahead ( upstream) of the analyzer . Does it matter which order they are connected?
Or is this just another case of my E63 OCD ?
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From: Long Island
'16 CLS63S
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From: USA
m157 SL63
I don't know any m157 running pure e85, so I'm not sure. I think max power stock-turbo e-tunes are capped in the e30 range without HPFPs. Spool sells the low pressure pump kit separately.
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Thread Starter
Senior Member
Joined: Feb 2005
Posts: 253
Likes: 51
From: Bay Area, CA
05 C55-gone 06 E55-gone 15 P85D 14 E63 S 11 Sonata 😅
Mine didn't come with instructions but Spool did send a PDF upon request.
I do have a question for everyone installing the Spool Ethanol analyzer.
The instructions show the filter ahead ( upstream) of the analyzer . Does it matter which order they are connected?
Or is this just another case of my E63 OCD ?
I do have a question for everyone installing the Spool Ethanol analyzer.
The instructions show the filter ahead ( upstream) of the analyzer . Does it matter which order they are connected?
Or is this just another case of my E63 OCD ?
Senior Member
Joined: Feb 2011
Posts: 320
Likes: 40
From: Northern VA
2015 CLS63 S AMG
I installed mine and it looked similar to @bentz69 's setup. I found the fuel pump fuse, pulled it, fired the car up and let it shut off once all the fuel in the lines were spent. After this I disconnected the fuel line's in the engine bay and just routed the fuel filter inline and then sent it to the methanol sensor and after the sensor it went to the fuel rail. Make sure to tighten the fittings firmly, after that plug in the fuel pump fuse, put the key to position 2 and let the fuel pump prime, check the schraeder valve at the fuel rail for pressure (carefully). After that give the car a start up. It may take a moment to crank but should fire up. Let it idle, make sure it sounds good and consistent, check for leaks and tighten fittings as appropriate. Then turn it off and work on wiring in the pump. (Someone else can write that part as I think I did a poor job on mine and need to redo it)
Also, I put my fuel filter prior to the analyzer so the analyzer would get the cleanest fuel and not gum up over time. I also want to make sure that it's not getting a different ethanol content reading than what is going into the engine.
Hope this helps!
Also, I put my fuel filter prior to the analyzer so the analyzer would get the cleanest fuel and not gum up over time. I also want to make sure that it's not getting a different ethanol content reading than what is going into the engine.
Hope this helps!
Super Member
Joined: Oct 2015
Posts: 723
Likes: 115
From: Long Island
'16 CLS63S
I installed mine and it looked similar to @bentz69 's setup. I found the fuel pump fuse, pulled it, fired the car up and let it shut off once all the fuel in the lines were spent. After this I disconnected the fuel line's in the engine bay and just routed the fuel filter inline and then sent it to the methanol sensor and after the sensor it went to the fuel rail. Make sure to tighten the fittings firmly, after that plug in the fuel pump fuse, put the key to position 2 and let the fuel pump prime, check the schraeder valve at the fuel rail for pressure (carefully). After that give the car a start up. It may take a moment to crank but should fire up. Let it idle, make sure it sounds good and consistent, check for leaks and tighten fittings as appropriate. Then turn it off and work on wiring in the pump. (Someone else can write that part as I think I did a poor job on mine and need to redo it)
Also, I put my fuel filter prior to the analyzer so the analyzer would get the cleanest fuel and not gum up over time. I also want to make sure that it's not getting a different ethanol content reading than what is going into the engine.
Hope this helps!
Also, I put my fuel filter prior to the analyzer so the analyzer would get the cleanest fuel and not gum up over time. I also want to make sure that it's not getting a different ethanol content reading than what is going into the engine.
Hope this helps!
Super Member
Joined: Nov 2010
Posts: 693
Likes: 152
From: USA
m157 SL63
I opened mine up after 2 years but only 8k miles, and there was no gunk or build-up. I replaced the faulty Spool fuel filter shortly after it was installed with one from ForeInnovations.
Super Member
Joined: Oct 2015
Posts: 723
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From: Long Island
'16 CLS63S
I ran 100% e85 on my w204 c63 for about 75000 miles but I did not have a secondary fuel filter like the spool one we are using now. I also installed new injectors at the same time I installed the e85 kit on the c63. After 75000 miles the injectors were in pretty bad shape as far as being gummed up. I was also using redline fuel cleaner every 10k miles.
I use redline fuel cleaner every 5k miles now in the cls63 (honestly not sure if it helps) but Im still concerned about the injectors. Although, running e40-e50 is not as harsh as pure e85 because of the detergents in top tier 93 gas like BP and Shell since we are mixing. Only time will tell...
Super Member
Joined: Nov 2010
Posts: 693
Likes: 152
From: USA
m157 SL63
Why was your spool filter faulty?
I ran 100% e85 on my w204 c63 for about 75000 miles but I did not have a secondary fuel filter like the spool one we are using now. I also installed new injectors at the same time I installed the e85 kit on the c63. After 75000 miles the injectors were in pretty bad shape as far as being gummed up. I was also using redline fuel cleaner every 10k miles.
I use redline fuel cleaner every 5k miles now in the cls63 (honestly not sure if it helps) but Im still concerned about the injectors. Although, running e40-e50 is not as harsh as pure e85 because of the detergents in top tier 93 gas like BP and Shell since we are mixing. Only time will tell...
I ran 100% e85 on my w204 c63 for about 75000 miles but I did not have a secondary fuel filter like the spool one we are using now. I also installed new injectors at the same time I installed the e85 kit on the c63. After 75000 miles the injectors were in pretty bad shape as far as being gummed up. I was also using redline fuel cleaner every 10k miles.
I use redline fuel cleaner every 5k miles now in the cls63 (honestly not sure if it helps) but Im still concerned about the injectors. Although, running e40-e50 is not as harsh as pure e85 because of the detergents in top tier 93 gas like BP and Shell since we are mixing. Only time will tell...
Apparently Spool used some seals in their (at least early) m157 ethanol filters which were not suitable for use with ethanol
, and that caused them to fail over a short period of time. What was wrong wasn't known at that time, but this happened to several people. Spool did end up eventually giving me a refund on the filter, but that seemed pretty dangerous.I started out running full e85, but later moved to lower blends - I had an apparent tuning issue which had me running lean, and reducing e-content was one of the things I did to try to fix the lean issue (it didn't work beyond a run or two, the tune then dropped fueling to get me back to lean
). I did have an injector which failed, and I ended up having them all replaced to reset the clock. My car has only 35k miles on it.
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Joined: Mar 2020
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2014 E63 AMG
I also removed my spool sensor. It leaked twice dumping fuel on a hot engine. After the second time, I was pretty much done using spool products. And Spool did the original install and warranty fix. After the second failure, I pulled it out myself.
Super Member
Joined: Nov 2010
Posts: 693
Likes: 152
From: USA
m157 SL63
E60 is the max stock pumps can handle.
I also removed my spool sensor. It leaked twice dumping fuel on a hot engine. After the second time, I was pretty much done using spool products. And Spool did the original install and warranty fix. After the second failure, I pulled it out myself.
I also removed my spool sensor. It leaked twice dumping fuel on a hot engine. After the second time, I was pretty much done using spool products. And Spool did the original install and warranty fix. After the second failure, I pulled it out myself.
Member
Joined: Mar 2020
Posts: 91
Likes: 26
2014 E63 AMG
Several people have had eurocharged tunes that got in the e50-e60 range. BrutusTX (spelling) is one of the first to do so, he ended up backing down to e50 from e60. I have also seen cars that had issues with just e30.
As for AWHP, it was just over 700. I can’t find my dyno printouts, I just moved so it may have been cleaned out before, lost during or lost after the move. I am about to do my taxes, can’t wait to see what else was lost!
From what I was told, there was not a huge difference in hp gains between e40 and e60.
As for AWHP, it was just over 700. I can’t find my dyno printouts, I just moved so it may have been cleaned out before, lost during or lost after the move. I am about to do my taxes, can’t wait to see what else was lost!
From what I was told, there was not a huge difference in hp gains between e40 and e60.
