OBD2 datalog results (this sound normal?)
06-30-2006, 03:03 PM
#1
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05 E55 AMG
OBD2 datalog results (this sound normal?)
93F ambient - 2900' altitude (26.92 inHg ambient) - A/C blasting - Stock car other than K&N's and DR's.
Coolant temp - Hovered between 196-203F
Vaccum peak - 5.93 inHg (-20.99 inHg)
Boost peak - 46.20 inHg (9.47 psi over ambient)
Long term fuel trims - -6.3% and -7.0% (short terms stay right at 0.0% most of the time)
IAT - Average 112F during the trip (including sitting in a drive thru) - Peak 144F after the second 10-105MPH pull - comes down immediately after the pull is complete
Anything of note? Looks like exactly what I was expecting...well except for the boost. I was thinking it should be closer to 11.8 psi at this altitude if the car is supposed to push 13.1 psi at sea level (1.891 pressure ratio).
Coolant temp - Hovered between 196-203F
Vaccum peak - 5.93 inHg (-20.99 inHg)
Boost peak - 46.20 inHg (9.47 psi over ambient)
Long term fuel trims - -6.3% and -7.0% (short terms stay right at 0.0% most of the time)
IAT - Average 112F during the trip (including sitting in a drive thru) - Peak 144F after the second 10-105MPH pull - comes down immediately after the pull is complete
Anything of note? Looks like exactly what I was expecting...well except for the boost. I was thinking it should be closer to 11.8 psi at this altitude if the car is supposed to push 13.1 psi at sea level (1.891 pressure ratio).
Last edited by Trevor; 06-30-2006 at 03:07 PM.
06-30-2006, 03:57 PM
#2
MBWorld Fanatic!
Originally Posted by Trevor
93F ambient - 2900' altitude (26.92 inHg ambient) - A/C blasting - Stock car other than K&N's and DR's.
Coolant temp - Hovered between 196-203F
Vaccum peak - 5.93 inHg (-20.99 inHg)
Boost peak - 46.20 inHg (9.47 psi over ambient)
Long term fuel trims - -6.3% and -7.0% (short terms stay right at 0.0% most of the time)
IAT - Average 112F during the trip (including sitting in a drive thru) - Peak 144F after the second 10-105MPH pull - comes down immediately after the pull is complete
Anything of note? Looks like exactly what I was expecting...well except for the boost. I was thinking it should be closer to 11.8 psi at this altitude if the car is supposed to push 13.1 psi at sea level (1.891 pressure ratio).
Coolant temp - Hovered between 196-203F
Vaccum peak - 5.93 inHg (-20.99 inHg)
Boost peak - 46.20 inHg (9.47 psi over ambient)
Long term fuel trims - -6.3% and -7.0% (short terms stay right at 0.0% most of the time)
IAT - Average 112F during the trip (including sitting in a drive thru) - Peak 144F after the second 10-105MPH pull - comes down immediately after the pull is complete
Anything of note? Looks like exactly what I was expecting...well except for the boost. I was thinking it should be closer to 11.8 psi at this altitude if the car is supposed to push 13.1 psi at sea level (1.891 pressure ratio).
06-30-2006, 04:20 PM
#3
MBWorld Fanatic!
Originally Posted by rflow306
I think that's pretty good, everything is within range for your altitude and ambient temp. One suggestion is to remove the plastic supercharger clutch cover and check for belt residue. If it is to excessive remove and install a new belt. Your Iat's definitely look good.
The temps are the big thing. Not to bad. For a good time add pulleys and go log some more data. Watch those temps go through the roof!!!
The C32 i use at the track used to hit low 200's after a few laps but some massive intercooler work has gotten them down to the 160 range on a 105 degree day.
My E55 hits 140 after a few runs even on a cool night. Your cooler must work really well.
