Car running lean
6/30/14, 06:36 AM
#1
Cobra R Member
Thread Starter
Car running lean
Alright so some of you know that my dyno pulls were a failure due to the car running lean at WOT.
So far according to justin.
-The car or something isn't enriching at WOT
-another interesting side note is he was looking at logs i sent friday and say yeah it looks like your not flooring it...which i am sure i was, so either something seems to be off with the accel pedal and TPS sensor... or i really didn't push it to the floor.
something i want to note - One wierd thing i have noticed is that when saying pulling into a parking lot and I'm coasting, idle will slowly rise on its own without me doing anything, usually gets to about 1400 rpm when i brake it goes away.
so coming up on my second tune adjustment here today, around lunch time.
I'm documenting this for anyone else that might come across the same issue.
So far according to justin.
-The car or something isn't enriching at WOT
-another interesting side note is he was looking at logs i sent friday and say yeah it looks like your not flooring it...which i am sure i was, so either something seems to be off with the accel pedal and TPS sensor... or i really didn't push it to the floor.
something i want to note - One wierd thing i have noticed is that when saying pulling into a parking lot and I'm coasting, idle will slowly rise on its own without me doing anything, usually gets to about 1400 rpm when i brake it goes away.
so coming up on my second tune adjustment here today, around lunch time.
I'm documenting this for anyone else that might come across the same issue.
6/30/14, 12:59 PM
#4
Cobra R Member
Thread Starter
Not throwing any codes for those but I guess that doesn't necessarily mean that there aren't anything wrong with them. Was thinking about getting some MAF cleaner and giving that a shot as it couldn't hurt.
After the new adjusted tune i got today and got some logs i think from what i can tell that WOT's AFR is looking better. Though i've lost boost, my boost gauge was reading maybe 4psi. but then again i was doing 2nd gear pulls.
After the new adjusted tune i got today and got some logs i think from what i can tell that WOT's AFR is looking better. Though i've lost boost, my boost gauge was reading maybe 4psi. but then again i was doing 2nd gear pulls.
6/30/14, 03:40 PM
#5
I Have No Life
^ keep us posted.
Why is boost down lower with the tune adjustment from VMP? is it because they're diagnosing at the moment? hmmm
I hope I don't run into similar issues from JDM Engineering.
How many lbs of boost were you running with the kit before all this happened?
Why is boost down lower with the tune adjustment from VMP? is it because they're diagnosing at the moment? hmmm
I hope I don't run into similar issues from JDM Engineering.
How many lbs of boost were you running with the kit before all this happened?
6/30/14, 04:17 PM
#6
Mach 1 Member
Wonder if it could be a fuel pump issue? I know when I did my 3rd gear pulls, I still saw 10lbs of boost once the rpm's started to build. I hope Justin figures it soon for you.
6/30/14, 06:35 PM
#7
Cobra R Member
Thread Starter
Why the boost is lower? i dunno maybe its just me, i was doing the WOT pulls in 2nd so who knows. Before all this i was seaking peaks of up to 10psi and steady at 5-6. But so far atleast the AFR seems to be normal when WOT which is good cause i dont wanna blow the engine.
All i know is that the car seems a little on the slower side now and i think its due to them trying to get the AFR right right now...atleast i hope.
I was running in 2nd for my WOT pulls just cause the empty strip of road i was on really only gave me enough room for 2nd lol. Everything that can be logged for the fuel pump has and they say that it looks good so. I dunno. Guess will see.
6/30/14, 10:26 PM
#8
I Have No Life
I will keep this updated as I go. Maybe get explinations from VMP as to what they corrected. Why the boost is lower? i dunno maybe its just me, i was doing the WOT pulls in 2nd so who knows. Before all this i was seaking peaks of up to 10psi and steady at 5-6. But so far atleast the AFR seems to be normal when WOT which is good cause i dont wanna blow the engine. All i know is that the car seems a little on the slower side now and i think its due to them trying to get the AFR right right now...atleast i hope. I was running in 2nd for my WOT pulls just cause the empty strip of road i was on really only gave me enough room for 2nd lol. Everything that can be logged for the fuel pump has and they say that it looks good so. I dunno. Guess will see.
7/1/14, 06:36 AM
#9
Cobra R Member
Thread Starter
Maybe I'm just paranoid or something.
7/1/14, 06:41 AM
#10
I Have No Life
7/1/14, 07:17 AM
#11
Cobra R Member
Thread Starter
7/1/14, 07:23 AM
#12
I Have No Life
7/1/14, 11:22 AM
#13
Mach 1 Member
Do you have a datalog you can post up? What are you Short Term Fuel Trims? Long Term Fuel Trims? Whats commanded AFR at WOT? Whats actual AFT at WOT?
Cheers
-Matt
Cheers
-Matt
7/1/14, 11:32 AM
#14
Cobra R Member
Thread Starter
https://drive.google.com/file/d/0B-c...it?usp=sharing
7/1/14, 11:44 AM
#15
Mach 1 Member
This is the most recent log. WOT 2nd gear. let me know if this link works.
https://drive.google.com/file/d/0B-c...it?usp=sharing
https://drive.google.com/file/d/0B-c...it?usp=sharing
-Matt
7/1/14, 11:50 AM
#16
Cobra R Member
Thread Starter
7/1/14, 11:52 AM
#17
Mach 1 Member
7/1/14, 11:59 AM
#18
Cobra R Member
Thread Starter
EEU7 is the "comptuer code" which is interesting because i know everytime you get a bama tune redone you give that to them and VMP never asked for that....
7/1/14, 08:19 PM
#20
Mach 1 Member
yeah something does seem off with the car now that he's been tweaking the tune, less power. Also my fears have been confirmed, on vacation, would have been nice if they said something or atleast an Out of office. I know people can take vacations but a heads up would have been nice.
so i guess until next week :/
so i guess until next week :/