Data Logs! Post them here.

[Tectoniic]

Originally Posted by Cole

http://datazap.me/u/colekmiecik/log5?log=0&data=1
Time for part out?

A bit hard to tell from just 12s but the pull looks good for fuel trim and IAM stays at 1. Add CMD AFR and FLKC to your channels if you have the space. You want to be able to make sure that you have a pretty close AFR to what the ECU wants

[armyoffoo]

Got a revised tune and it's not working out too well, bogs under acceleration, can you guys take a look and tell me what you think?

Mods:
Perrin CAI standard MAF
Crawford power blocks
DW 700cc injectors
DW 265lph pump
Moto East Flex Fuel kit, EVAP PNP
Borla UEL
Borla Over, mid, axle back

[D_Thissen]

Originally Posted by armyoffoo

Got a revised tune and it's not working out too well, bogs under acceleration, can you guys take a look and tell me what you think?

Mods:
Perrin CAI standard MAF
Crawford power blocks
DW 700cc injectors
DW 265lph pump
Moto East Flex Fuel kit, EVAP PNP
Borla UEL
Borla Over, mid, axle back

Upload it to datazap.me please.

Sent from my Nexus 6P using Tapatalk

[armyoffoo]

Originally Posted by D_Thissen

Upload it to datazap.me please.

Sent from my Nexus 6P using Tapatalk

Here you go

http://datazap.me/u/armyoffoo/e85-tu...l?log=0&data=5

[steve99]

Originally Posted by armyoffoo

Got a revised tune and it's not working out too well, bogs under acceleration, can you guys take a look and tell me what you think?

Mods:
Perrin CAI standard MAF
Crawford power blocks
DW 700cc injectors
DW 265lph pump
Moto East Flex Fuel kit, EVAP PNP
Borla UEL
Borla Over, mid, axle back

Probaly best if you taked to the moto est guys, theirs some pretty big ltft -15%

did you tell the tuner about your perrin intake and 700 cc injectors ?

why are you running big fuel pump and injectors if your not fi you dont need them or are you going fi soon

assume you flex kit is hooked up ok and working correctly?

again best talk to moto east they know the tune and setup were just guessing here.

[armyoffoo]

Originally Posted by steve99

Probaly best if you taked to the moto est guys, theirs some pretty big ltft -15%

did you tell the tuner about your perrin intake and 700 cc injectors ?

why are you running big fuel pump and injectors if your not fi you dont need them or are you going fi soon

assume you flex kit is hooked up ok and working correctly?

again best talk to moto east they know the tune and setup were just guessing here.

I gave the tuner my mod list, in the initial tune they forgot the 700cc injectors, so it ran much worse, this is the revised initial tune. I am planning on going FI in 3-6 months, so was taking care of the fueling now. Kit is hooked up correctly, and displays the Ethanol % correctly.

I didn't buy the kit from MotoEast, bought it second hand (new, never installed) and bought the ECUTek kit and tune from FT86 SpeedFactory. So far, I've got a car that's mostly undriveable since tuning, and that's an improvement over the first try.

I might just revert to stock injectors and have them tune with those so i have a usable vehicle.

[armyoffoo]

Installed stock injectors and flashed original tune before correction for injector scaling. Car runs better than the other tunes, but still worse than it was when stock. Bogging down on acceleration, almost dies from a complete stop.

http://datazap.me/u/armyoffoo/e85-tu...=6-10-11-14-15

[steve99]

Originally Posted by armyoffoo

Installed stock injectors and flashed original tune before correction for injector scaling. Car runs better than the other tunes, but still worse than it was when stock. Bogging down on acceleration, almost dies from a complete stop.

http://datazap.me/u/armyoffoo/e85-tu...=6-10-11-14-15

i wonder if they put the wrong perrin maf scaling in as their is a 2.5 and a 3" version the ltft is still out a fair bit at lower rpm .

[armyoffoo]

Originally Posted by steve99

i wonder if they put the wrong perrin maf scaling in as their is a 2.5 and a 3" version the ltft is still out a fair bit at lower rpm .

The tuner asked me which I had, "big MAF or standard MAF", I told them it was the standard. Maybe they picked the wrong one, I wouldn't doubt it. This sucks, I need my car, it's my daily driver and tomorrow is a work day.

This evening, I purchased a Delicious Tuning Stage 2 tune w/E85, and will call them tomorrow to see if they can turn it around quickly. I'm sure I'll be satisfied with them seeing all the good reviews.

[Wepeel]

Originally Posted by steve99

i think you found you problem , O2 sensors should screw in by hand, use a thread chaser\tap M18 by 1.5 to clean up the threads in header, its likely damaged threads on sensor and it leaking or the sensor is damaged from excess torque applied to fit\remove

always use new gaskets on header as well

Alright I finally resolved the issue. The O2 sensor was threaded in fine. I replaced the O2 sensor and that fixed it.

So to summarize, during periods of extended cruise I was seeing AFR's drop until eventually the car went full open loop in all driving. I never got any codes. I reinstalled the O2 a few times and no change. The O2 was showing in-range voltages. I replaced the O2 with a new one and it resolved the problem - car stays in closed loop during long cruise and AFR is consistently 14.7.

Moral of the story...

1. Rear O2 definitely contributes to AFR control during cruise
2. O2 performance can degrade enough to affect performance significantly and still show normal voltages and not report any codes
3. It's easy to swap the rear O2 without removing the header
4. Periodically check your AFR during extended cruise as you might have an issue and not know it

[Cartman]

So I reflashed my car after re-installing all my mods, and I haven't been able to get it running right... The logs show nothing abnormal and its displaying correct timing, cam angles, and smooth AFR... but the car is running like dog shit.

The only abnormal behavior is that the exhaust cams won't unlock unless I drive the car a little bit.

1-3rd pull
http://www.datazap.me/u/luisgt/1-3rd...10-21-22-24-31

3rd gear pull (2500-7500)
http://www.datazap.me/u/luisgt/jdl-s...=4-10-22-23-31

[steve99]

Originally Posted by Cartman

So I reflashed my car after re-installing all my mods, and I haven't been able to get it running right... The logs show nothing abnormal and its displaying correct timing, cam angles, and smooth AFR... but the car is running like dog shit.

The only abnormal behavior is that the exhaust cams won't unlock unless I drive the car a little bit.

1-3rd pull
http://www.datazap.me/u/luisgt/1-3rd...10-21-22-24-31

3rd gear pull (2500-7500)
http://www.datazap.me/u/luisgt/jdl-s...=4-10-22-23-31

seems to be on the rich side its running mid to low 11 afr, looks like ltft has been disabled as its always zero in open loop. The AFR might also be hitting the limit of the o2 sensor scaling so it might be running even richer.

[Cartman]

Originally Posted by steve99

seems to be on the rich side its running mid to low 11 afr, looks like ltft has been disabled as its always zero in open loop. The AFR might also be hitting the limit of the o2 sensor scaling so it might be running even richer.

I was running fine with this tune for months, even did a couple of track days. LTFT is not disabled, I just scaled the maf, it moves to -4.7 at idle.

[steve99]

Originally Posted by Cartman

I was running fine with this tune for months, even did a couple of track days. LTFT is not disabled, I just scaled the maf, it moves to -4.7 at idle.

at idle ecu is in closed loop.
ot appears ltft is disabled in open loop as on wot runs ltft is zero, or you hav incredibly good maf scaling or the log was taken soon after flashing.
however running in mid to low 11 seems very rich, as you have not logged commanded afr its hard to tell also you may have reached the limit of o2 sensor reading unless o2 has been re scaled