E55 AMG AFR
Thread Starter
Member
Joined: May 2014
Posts: 206
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From: Tbilisi, Georgia
04 E55 w211
E55 AMG AFR
hi.
just had my car put on dyno and the AFR reading was pretty low. it showed 10.6
has anyone had experence with this? should i raise it to 12-12.5 as advised?
i am told that i will get 40-50 rwhp more if i do that. how will it affect my supercharger and engine life and durability. what about fuel consumption.
the car is completely stock with only ECU remap and it showed 465 hp TO THE WHEELS. 584 in the engine. weird. would be great if i could go over 500rwhp with the AFR fix.
thanks in advance.
just had my car put on dyno and the AFR reading was pretty low. it showed 10.6
has anyone had experence with this? should i raise it to 12-12.5 as advised?
i am told that i will get 40-50 rwhp more if i do that. how will it affect my supercharger and engine life and durability. what about fuel consumption.
the car is completely stock with only ECU remap and it showed 465 hp TO THE WHEELS. 584 in the engine. weird. would be great if i could go over 500rwhp with the AFR fix.
thanks in advance.
Senior Member
Joined: Apr 2012
Posts: 437
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From: Central PA
'05 E55
One other point of note: if your tuner is relying on a wide-band stuffed up the tailpipe, find another tuner. Especially if you're tuning close to the edge. It's not reliable enough since there's too many variables that far downstream.
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Joined: Jan 2011
Posts: 1,239
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From: West
E55 AMG
True, but if you're going to be tuning and/or modifying the car it doesn't cost much to have a bung welded in so a dyno shop can throw their wideband sensor in for the session, plug it up afterwards. 
MBWorld Fanatic!
Joined: Dec 2011
Posts: 4,599
Likes: 102
From: Florida
A Merc
I agree, I actually think as soon as you tune you should be data logging, something I learned early on from chasing ghosts and I recommend the dashdaq and zt2 to everyone before they spend money on mods.
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Senior Member
Joined: Apr 2012
Posts: 437
Likes: 1
From: Central PA
'05 E55
If you're tuning, short-cuts and "good-enoughs" are prime ingredients to future heartache.
Agree with sircl55, a lot of caveats: intake temp, fuel quality/octane, plugs, etc.
If you are tuning for 12.x AFRs, the margins become thinner. (no dice on tailpipe sniffer, etc.)
Agree with sircl55, a lot of caveats: intake temp, fuel quality/octane, plugs, etc.
If you are tuning for 12.x AFRs, the margins become thinner. (no dice on tailpipe sniffer, etc.)
Thread Starter
Member
Joined: May 2014
Posts: 206
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From: Tbilisi, Georgia
04 E55 w211
thanks guys.
unfortunately down here i have very limited choice in everything. this actually is the only dyno in the country.
at the very least i ll have a map written for leaner AFR and plug it in. if does better i ll keep it, if it doesnt, i have the current map saved.
another question. i showed 460 rwhp and 585 bhp. are these numbers normal for just a ECU remap?
we couldnt measure torque due to wheel spin on the dyno. so theoreticaly if 469 bhp comes with 700Nm, then 585 bhp then proportionally i should get somewhere near 870Nm. how accurate is my calculation. what else should i keep in mind.
cheers.
unfortunately down here i have very limited choice in everything. this actually is the only dyno in the country.
at the very least i ll have a map written for leaner AFR and plug it in. if does better i ll keep it, if it doesnt, i have the current map saved.
another question. i showed 460 rwhp and 585 bhp. are these numbers normal for just a ECU remap?
we couldnt measure torque due to wheel spin on the dyno. so theoreticaly if 469 bhp comes with 700Nm, then 585 bhp then proportionally i should get somewhere near 870Nm. how accurate is my calculation. what else should i keep in mind.
cheers.
Thread Starter
Member
Joined: May 2014
Posts: 206
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From: Tbilisi, Georgia
04 E55 w211
its really weird how thats possible.
had a run against a fully modded cls55, headers, throtle body, pulleys, big aftermarket intercooler making bout 500 whp. ran it over
135 bmw with 470 bhp 760 nm. ran that over. u can see the vids here:
https://www.youtube.com/channel/UCrB...4QsD9vf0phqviA
my fav is the e60 m5 MT Dinan 580 bhp
had a run against a fully modded cls55, headers, throtle body, pulleys, big aftermarket intercooler making bout 500 whp. ran it over
135 bmw with 470 bhp 760 nm. ran that over. u can see the vids here:
https://www.youtube.com/channel/UCrB...4QsD9vf0phqviA
my fav is the e60 m5 MT Dinan 580 bhp
Thread Starter
Member
Joined: May 2014
Posts: 206
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From: Tbilisi, Georgia
04 E55 w211
there is a drag race end of sept. i ll get my quarter mile times then. how much time do you think an LSD can save me in quarter mile? approximately.
i had everything checked on the car, the suercharger is blowing 0,75 bar (stock), headers look stock, so does throttle body, intercooler hasnt been touched. wht else could give me thi much power? the only thing changed is the IC pump, its Bosch 010, which is not the best choice, but more economcal.
i had everything checked on the car, the suercharger is blowing 0,75 bar (stock), headers look stock, so does throttle body, intercooler hasnt been touched. wht else could give me thi much power? the only thing changed is the IC pump, its Bosch 010, which is not the best choice, but more economcal.
Super Member
Joined: Nov 2012
Posts: 698
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From: Germany
C215 CL55 AMG, W124 500E, W210 E430, W124 300E
In germany we would say clearly "Presselader". Which means Supercharger for the press.
Thats the Supercharger with a higher gear ratio internal so it makes approx 0.1bar more boost than the stock units. I Heard now that it was more or less a common tuning upgrade for the early 55Ks before they all went with pulleys.
Those were the supercharger units they used when they went at nardo italy racetrack with the SL55 in 2002 and killed that Lambo Murcialago up to above 320kph top speed.
Thats the Supercharger with a higher gear ratio internal so it makes approx 0.1bar more boost than the stock units. I Heard now that it was more or less a common tuning upgrade for the early 55Ks before they all went with pulleys.
Those were the supercharger units they used when they went at nardo italy racetrack with the SL55 in 2002 and killed that Lambo Murcialago up to above 320kph top speed.
Thread Starter
Member
Joined: May 2014
Posts: 206
Likes: 0
From: Tbilisi, Georgia
04 E55 w211
had another run at the M% dinan 585 hp. rolling start from 60 to about 280-290 until it got boring
https://www.facebook.com/photo.php?v...type=2&theater
here is the vid.
https://www.facebook.com/photo.php?v...type=2&theater
here is the vid.
