High AFRs /Low IAT data logging
MBWorld Fanatic!
Joined: Jan 2011
Posts: 1,239
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From: West
E55 AMG
Thanks
even with your full cooling setup ? What's your AFR
suprised with my setup up that IATs are similar to yours. but tells me I don't have a cooling problem.
Did more runs today as HULK suggested, attached. AFR started around 11-12 at 3k revs and went to 9-10 smokin fuel by the time I hit 6k.
even with your full cooling setup ? What's your AFR
suprised with my setup up that IATs are similar to yours. but tells me I don't have a cooling problem.
Did more runs today as HULK suggested, attached. AFR started around 11-12 at 3k revs and went to 9-10 smokin fuel by the time I hit 6k.
Thread Starter
Super Member
Joined: Jan 2008
Posts: 626
Likes: 8
From: UK
E55K AMG
On my previous tune with a 185 pulley, if IAT's hit 140-160 I would see AFR's around 10-10.7 coupled with a pull in timing. With methanol I have yet to see AFR's dip that low, as I typically see IAT's stay at around 10F above ambient in third gear. EGT's never go above 1250 either.
I am no where near a 185 pulley - mods are,
550CC TTM injectors (looped fuel rail)
83mm smaller supercharger pulley
82mm throttle body
EC charge cooler/ split system /engine bay tank/ Johnson 30 pump
Shorty Rentech exhaust manifolds (kept Primary cats and original back boxes) removes secondary cats and centre box
Thread Starter
Super Member
Joined: Jan 2008
Posts: 626
Likes: 8
From: UK
E55K AMG
Am in London.
your compression is probably fine unless it smokes all the time. does it smoke heavy on kick down only? who tuned your car on what mods?
cheers
Newbie
Joined: Jul 2015
Posts: 10
Likes: 0
E55k AMG
he car was originally done by MSL.
had the EC HE
johnson pump
83mm pulley
EC remap
I decided id go for the 77mm pulley. had it on the dyno and the AFR kept dropping to 10.3. so all mods removed and stock pulley and mb map installed.
even with the stock components its still running rich.
I have the var back but will be giving it to Olly at PCS to take a look into.
There is no smoke coming from the car?
Im pretty sure its some kind of sensor that is failing... But no errors are showing in stars... confused.com
the funny thing is i managed to get 29 mpg going from j8 M25 to Cardiff central...
had the EC HE
johnson pump
83mm pulley
EC remap
I decided id go for the 77mm pulley. had it on the dyno and the AFR kept dropping to 10.3. so all mods removed and stock pulley and mb map installed.
even with the stock components its still running rich.
I have the var back but will be giving it to Olly at PCS to take a look into.
There is no smoke coming from the car?
Im pretty sure its some kind of sensor that is failing... But no errors are showing in stars... confused.com
the funny thing is i managed to get 29 mpg going from j8 M25 to Cardiff central...
Last edited by E55mo; Sep 1, 2015 at 02:09 PM.
Member
Joined: Oct 2013
Posts: 131
Likes: 6
From: NE Phila
E55 AMG
