For those who actually log their vehicles..chime in.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
Likes: 7
From: Puerto Rico
2005 E55 AMG
For those who actually log their vehicles..chime in.
Jerry has been continuously reflashing my car for the past few months so that I can get my tune as perfect as possible before I head off to the dyno and the track. Street tuning is the best there is I'll tell you that...
Anyways, My car is currently running mid a 11 A/F ratio and pushing a max of 14.5psi. My ECU is commanding 20-21deg all the way to redline ( only drops when the car upshifts ) and I get ZERO deg. of timing retard.
This is on 93oct and the ambient temps at 95* with my IAT's going from 100* to 150* by 120mph.
How does all this sound to you? I find 21* to be pretty decent for pump gas and even though I see no knock I'm kinda wondering if anyone thinks that advancing timing even more would be a good idea.
Thoughts?
Anyways, My car is currently running mid a 11 A/F ratio and pushing a max of 14.5psi. My ECU is commanding 20-21deg all the way to redline ( only drops when the car upshifts ) and I get ZERO deg. of timing retard.
This is on 93oct and the ambient temps at 95* with my IAT's going from 100* to 150* by 120mph.
How does all this sound to you? I find 21* to be pretty decent for pump gas and even though I see no knock I'm kinda wondering if anyone thinks that advancing timing even more would be a good idea.
Thoughts?
Super Member
Joined: Oct 2008
Posts: 837
Likes: 25
From: seattle
1990 300ce supercharged and intercooled
I was wondering what the optimal timing on these engines is. I can not believe that the combustion chamber is so inefficient that more timing is required. I know for instance that the two 4 valve motors I do tuning on, both boosted, one is an Audi an one a Mercedes tend to like around 15-18 degrees of timing and really stop making anymore power above that. This is where the dyno comes into play big time.
Super Member
Joined: Mar 2011
Posts: 502
Likes: 0
From: Porter Ranch, CA
E55, CTS-V Wagon, Duc 1098R
21 is way good. Peak power for me came at 19 with a 180 pulley and 91 pump. Remember these cars are ultra sensitive too it due to our crappy pistons so you shouldn't push it. Not to mention the gain will be small considering the abuse the motor will take with the increase in cylinder pressure.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
Likes: 7
From: Puerto Rico
2005 E55 AMG
21 is way good. Peak power for me came at 19 with a 180 pulley and 91 pump. Remember these cars are ultra sensitive too it due to our crappy pistons so you shouldn't push it. Not to mention the gain will be small considering the abuse the motor will take with the increase in cylinder pressure.
MBWorld Fanatic!
Joined: Mar 2011
Posts: 1,879
Likes: 22
From: Orange County, CA.
one car at a time
Currently I am seeing 19 * max, but I am on 91 octane...I doubt the 2* difference seriously makes more than 5 or so hp. Frankly I would rather run conservative timing map and run more boost.
I am surprised you are seeing 14.5 psi, I believe my 175mm is more like 13.x psi peak and more like ~ 12.x .
I am surprised you are seeing 14.5 psi, I believe my 175mm is more like 13.x psi peak and more like ~ 12.x .
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
Likes: 7
From: Puerto Rico
2005 E55 AMG
Currently I am seeing 19 * max, but I am on 91 octane...I doubt the 2* difference seriously makes more than 5 or so hp. Frankly I would rather run conservative timing map and run more boost.
I am surprised you are seeing 14.5 psi, I believe my 175mm is more like 13.x psi peak and more like ~ 12.x .
I am surprised you are seeing 14.5 psi, I believe my 175mm is more like 13.x psi peak and more like ~ 12.x .
I'm using Auto Enginuity.
Trending Topics
MBWorld Fanatic!
Joined: Dec 2011
Posts: 1,485
Likes: 26
From: new ringgold pa
99 ford lightning
are they ramping the timing or locking it throughout? what is the timing at lower loads? thats what makes the car feel good too the part throttle spark with some boost but not floored.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: Mar 2011
Posts: 1,879
Likes: 22
From: Orange County, CA.
one car at a time
To the person who asked about logging - I use the Innovate LC-1 (wideband) & OT-2 (OBD2 logger).
MBWorld Fanatic!
Joined: Nov 2004
Posts: 6,697
Likes: 381
2005 E55
Iv been running stock timing for a while now,Im down from 600ftlbs in the low end to around 530-540 but my car makes power till the rev limiter.
On the street I can beat the hell out of it and I never feel heat soak even in 90d weather
My latest dyno and Im looking to up to a 185 and see how it looks,I finally got the low end a/f perfect also
Aknight was there when I had this run done and he can vouch that I litterally drove an hour to get there and right when I pulled into the lot it was my turn to dyno and this was done 100% heatsoaked with zero cool down.
On the street I can beat the hell out of it and I never feel heat soak even in 90d weather
My latest dyno and Im looking to up to a 185 and see how it looks,I finally got the low end a/f perfect also
Aknight was there when I had this run done and he can vouch that I litterally drove an hour to get there and right when I pulled into the lot it was my turn to dyno and this was done 100% heatsoaked with zero cool down.
Last edited by skratch77; Aug 13, 2012 at 09:13 AM.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
Likes: 7
From: Puerto Rico
2005 E55 AMG
Iv been running stock timing for a while now,Im down from 600ftlbs in the low end to around 530-540 but my car makes power till the rev limiter.
On the street I can beat the hell out of it and I never feel heat soak even in 90d weather
My latest dyno and Im looking to up to a 185 and see how it looks,I finally got the low end a/f perfect also
Aknight was there when I had this run done and he can vouch that I litterally drove an hour to get there and right when I pulled into the lot it was my turn to dyno and this was done 100% heatsoaked with zero cool down.
On the street I can beat the hell out of it and I never feel heat soak even in 90d weather
My latest dyno and Im looking to up to a 185 and see how it looks,I finally got the low end a/f perfect also
Aknight was there when I had this run done and he can vouch that I litterally drove an hour to get there and right when I pulled into the lot it was my turn to dyno and this was done 100% heatsoaked with zero cool down.
How much is stock timing?
MBWorld Fanatic!
Joined: Mar 2011
Posts: 1,879
Likes: 22
From: Orange County, CA.
one car at a time
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
Likes: 7
From: Puerto Rico
2005 E55 AMG
MBWorld Fanatic!
Joined: Dec 2011
Posts: 4,066
Likes: 37
From: Folsom, CA
2005 E55 AMG
MBWorld Fanatic!
Joined: May 2011
Posts: 1,109
Likes: 20
From: Las Vegas, NV
1000Hp Diesel Trucks, 2019 E63s
PLATINUM SPONSOR
Joined: Jun 2008
Posts: 3,834
Likes: 65
From: Texas
2003 CL55
Jerry has been continuously reflashing my car for the past few months so that I can get my tune as perfect as possible before I head off to the dyno and the track. Street tuning is the best there is I'll tell you that...
Anyways, My car is currently running mid a 11 A/F ratio and pushing a max of 14.5psi. My ECU is commanding 20-21deg all the way to redline ( only drops when the car upshifts ) and I get ZERO deg. of timing retard.
This is on 93oct and the ambient temps at 95* with my IAT's going from 100* to 150* by 120mph.
How does all this sound to you? I find 21* to be pretty decent for pump gas and even though I see no knock I'm kinda wondering if anyone thinks that advancing timing even more would be a good idea.
Thoughts?
Anyways, My car is currently running mid a 11 A/F ratio and pushing a max of 14.5psi. My ECU is commanding 20-21deg all the way to redline ( only drops when the car upshifts ) and I get ZERO deg. of timing retard.
This is on 93oct and the ambient temps at 95* with my IAT's going from 100* to 150* by 120mph.
How does all this sound to you? I find 21* to be pretty decent for pump gas and even though I see no knock I'm kinda wondering if anyone thinks that advancing timing even more would be a good idea.
Thoughts?
How are you logging knock retard?
You guys seeing 26 degrees, please remember that we are talking numbers at wide open throttle , not part throttle.
You can see 30 deg at part throttle, if you look hard enough.
__________________
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
www.ultimatepd.com
instagram @ultimate_pd
facebook.com/ultimatepd
MBWorld Fanatic!
Joined: Mar 2010
Posts: 1,909
Likes: 4
From: San Diego
F-250
18-20 seems to be the sweet spot. On 91, the best power is found right about 19. When you go up, power drops off.
I did a race tune that used 21, but again, as soon as we added timing, we dropped off on power. So I guess the moral of the story, at least for these cars is "less is more"
I see maniacs running 28+ degrees on twin turbo motors, but that just does relate to our configurations.
I did a race tune that used 21, but again, as soon as we added timing, we dropped off on power. So I guess the moral of the story, at least for these cars is "less is more"
I see maniacs running 28+ degrees on twin turbo motors, but that just does relate to our configurations.
MBWorld Fanatic!
Joined: Nov 2004
Posts: 6,697
Likes: 381
2005 E55
my car loves 17-18 and we upped it from 16 at around 5.5k to 18 and you can see the dip in the graph and it litterallay just keeps making the power to redline and zero knock
Last edited by skratch77; Aug 14, 2012 at 11:43 AM.
Thread Starter
MBWorld Fanatic!
Joined: Jun 2010
Posts: 4,173
Likes: 7
From: Puerto Rico
2005 E55 AMG
Those are great numbers and I would not add more timing. Timing should drop some at 140 deg iat as well. Most cars even in great cold conditions pull timing over 19-21 degrees.
How are you logging knock retard?
You guys seeing 26 degrees, please remember that we are talking numbers at wide open throttle , not part throttle. You can see 30 deg at part throttle, if you look hard enough.
How are you logging knock retard?
You guys seeing 26 degrees, please remember that we are talking numbers at wide open throttle , not part throttle.
You can see 30 deg at part throttle, if you look hard enough.I'm logging it with auto enginuity.
Here is an interesting bit of information. My car used to be running at mid 9's A/F ratio and I would be seeing anywhere from 4-6* of knock retard. AS soon as Jerry pulled fuel out and I got into the upper 10's my knock retard completely disappeared. Just to show that being to rich can also be a bad thing.
