mustang gt 2006 manual help needed

[mamoon]

hello guys....

i was looking every where to lean to tune my mustang for a while put after having some problems in my car i decided to buy HP tuner VCM suite to fix it and start my real learning in tuning world.

my car was running okay till i decided to clean my injectors and after doing that my car start running really poorly when i push the engine on the road. the engine sound changed and i think my injectors are not working good

i have 2006 ford mustang gt manual whiteout any engine mods only the cats are removed.

can any one take a look on my log and tune file and help me identifying the problem.

i see my LTFT & STFT are off for both B1 & B2, also the max value for MAF sensor is only around 22 lb/min is it normal??
how can i decide if i have an injector problem?
any help will be appreciated..... thanks

[murfie]

22LB/min is not normal. I would have expected 30+.

Bank two long term fuel trims are very lean. With the low MAF values this usually means unmetered air is getting in and the ECU is adding fuel from the Error it sees its causing. Pull the driver side fuel rail and check the injector orings for damage. You can also try swapping the injectors from bank to bank to see if the problem stays on the bank or follow the injectors.

[mamoon]

for unmetered air checking ....

i think the best thing to do is to spray carp cleaner on the areas i suspect and see the engine rpm if the engine will respond or no.
is there is any better ways to check it.

i will do that and update the thread.
thanks for replaying.......

[murfie]

I do no think you will find it at idle as your trims are fine at idle. It only seems to show lean at partial throttle(intermittent) or WOT. unmetered air is the most common, but it could be a weak spark plug, weak injector, or bad MAF sensor. It could be a combination of these or a number of other things that can cause lean fuel trims. Since it started after cleaning the injectors I would start by swapping banks and see if the problem is injectors or not.

[Jay@HAP]

for unmetered air checking ....

i think the best thing to do is to spray carp cleaner on the areas i suspect and see the engine rpm if the engine will respond or no.
is there is any better ways to check it.

i will do that and update the thread.
thanks for replaying.......

spray carb cleaner and what your STFT and front 02 sensors.

[GHuggins]

OK, just "how" did you clean the injectors? Some cleaners aren't meant to be put into the fuel tanks if you ran it through the entire fuel system...

[tbrtuning]

If you put constant power to an injector while cleaning it you can easily ruin it

[SultanHassanMasTuning]

my mustang basic tune 17-12-2017 v1.hpt

this should help

[mamoon]

so i was out of town all that time ...finally i'm back :hi: and this happened.

so i got me a carburator cleaner and started spraying it around the intake and i was observing the STFT and found 2 air leakages point :yay: one at the far end of the intake driver side between the CMC plates and the manifold the other one was a bad injector O-ring in the passenger side injectors.

i opened the intake manifold cleaned it ...changed all the injector O-rings, removed the CMC plates (made my own CMC delete plates:cheers::cool:) and put every thing back together and WALLLA no air leaks any more:burnout:. now my LTFT & STFT are close to 0 (not 0 ... i know it should be close and its hard to tune it to 0 ...am i right ??:confused:)
i tuned for the CMC delete according to this thread :

https://forum.hptuners.com/showthrea...on-Information

now im phasing another issue.. around 3500 rpm to 4500 rpm i always have KR around 3 to 4 degrees and when this happens the engine stall and stay on the same RPM even if i have the throttle fully opened.

i tried to multiply the MBT spark and Border line spark tables to 0.9 to remove around 4 degrees from the spark advance but it stayed the same or even worse.

this is my tune and scanner files below please check it and till me what you think ..... i will be fixing AEM widband O2 sensor by tomorrow and i will update you with the scanner file.

[truspeedinc]

With the cmc delete did you retune the cmc open/closed values associated with? There is an article in here about it and is very helpful. Google will even bring it up by typing "tuning a mustang with hptuners" I believe that is correct.

[mamoon]

i changed the MBT table by copying the MBT table IMRC open and added it to base MBT table and then zeroed MBT tables IMRC closed and opened as i removed the CMC plates this is the only change that i did to the MBT tables



but finally i think i know whats happening... check the below photos and log files.

i think my injectors are faulty as you can see in below photos the engine is turning very lean when it changes to open loop operation and the ECM is requesting a richer AFR.

photo number 1 (and log 1)was loged from driver side bank, photo number 2 (and log 2) was loged from driver side bank but after i changed the injectors of the two banks together.

my fuel pressure is okay in both logs and i think the the injector signal from the ECM is also okay as when i changed the injectors between the two banks the injector behavior changed in log 2 you can see that i have some injectors leaking heavily and this is not showing in log 1.



what do you guys think ....am i right in this analysis.

if i'm going to change the injectors i'm thinking about buying 42Lb ford racing injectors. i don't have any modification on the intake or exhaust. can i tune this injectors for my current engine setup so in the future if i do any work on the engine i will not need to change the injectors again.



thanks for your help and sorry that i take too long to reply but i'm a bit busy this days and i don't got a lot of time to work on my car.

[mamoon]

yeah i did follow the thread her to tune for the CMC delete

but i think i know whats happening... check the below photos and log files.

i think my injectors are faulty as you can see in below photos the engine is turning very lean when it changes to open loop operation and the ECM is requesting a richer AFR.

photo number 1 (and log 1)was loged from driver side bank, photo number 2 (and log 2) was loged from driver side bank but after i changed the injectors of the two banks together.

my fuel pressure is okay in both logs and i think the the injector signal from the ECM is also okay as when i changed the injectors between the two banks the injector behavior changed in log 2 you can see that i have some injectors leaking heavily and this is not showing in log 1.

what do you guys think ....am i right in this analysis.

if i'm going to change the injectors i'm thinking about buying 42Lb ford racing injectors. i don't have any modification on the intake or exhaust. can i tune this injectors for my current engine setup so in the future if i do any work on the engine i will not need to change the injectors again.

thanks for your help and sorry that i take too long to reply but i'm a bit busy this days and i don't got a lot of time to work on my car.

[ghostofnyc]

my mustang basic tune 17-12-2017 v1.hpt

this should help

what was the setup?