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Old 04-28-2014, 11:53 PM   #1723
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Originally Posted by 1Cor10:23 View Post
Could I get some thoughts on my data log? Greatly appreciate any and all comments

Stage 2 UEL on 94 Octane.

log is here http://datazap.me/u/1cor1023/140428-...0&data=1-11-12

AFR shows rich on WOT, you can see +LTFT (~3.9) at high revs on 2nd and 3rd gear pulls. Another concerning point is the KC going on all over the place causing the IAM to drop to .88 after first 2nd gear pull and then .88 later on in log.

Anything I should be concerned about?

Would appreciate your thoughts if you have a moment @shiv@vishnu

Cheers.
Yeah it looks pretty good

If you want to stop IAM drop see first post in thread below, you carn't use the ROM's as they are G series but same principles apply, basicly just pull a bit of timing in problem 2000-3500 area

http://www.ft86club.com/forums/showthread.php?t=61820

If you want to get your AFR closer to target then you will need to scale MAF and get your ltft closer to 1 or 2% throughout rev range , its not rearly going to make that much difference but just makes the tune more consistent day to day. If your ltft was 7 or something then its rearly worth doing.

The +3.9% fuel trim at wot will make you richer than target.

Shiv target's around 11.8 for safety and your not rearly far off.
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Old 04-29-2014, 05:10 AM   #1724
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Originally Posted by Grip Ronin View Post
well its 7-4% in CL and -3.91 in mode 2 injection till about 3500-5k then drops too.78 and a/f is faily close. i have rescaled the maf in the higher range not the CL. getting the high pressure pump warranty a few months ago wouldnt throw off injector scaling would it??

Probably worth doing the CL maf scaling if your running up to 7% LTFT trim. And check for leaks in exhaust before O2 sensors, you did use new gaskets when you installed headers ?

Last edited by steve99; 04-29-2014 at 07:01 AM.
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Old 04-29-2014, 06:26 AM   #1725
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@steve99 thanks for your insight. Do you think running rich is a symptom of not having a modified snorkel like the one Shiv uses on his test cars?

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Old 04-29-2014, 06:57 AM   #1726
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@steve99 thanks for your insight. Do you think running rich is a symptom of not having a modified snorkel like the one Shiv uses on his test cars?

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Don't think it will be snorkel , more likely combination of fuel formulation and maybe bit of error in MAF scaling.

Fuels with 10% ethanol tend to run leaner than fuels with no ethanol content ect, also can be effected by other additives in fuel, don't you guys have some weird additives due sub zero climate ??

not sure if shiv tunes on E10 fuels or not.

Don't worry too much unless your really picky, running a bit rich is safer than running lean also generally less knock prone.
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Old 04-29-2014, 07:00 AM   #1727
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@steve99 Yup, most of our stuff is e10 but would have expected shiv's California juice to be the same. Perhaps it is some additives.

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Old 04-29-2014, 07:06 AM   #1728
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@steve99 Yup, most of our stuff is e10 but would have expected shiv's California juice to be the same. Perhaps it is some additives.

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Yeah your running about 11.4 AFR at +3.9% LTFT so if that went back to 0% that would put your AFR at 11.8 which is what shiv said he targets at WOT.
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Old 04-29-2014, 10:40 PM   #1729
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Probably worth doing the CL maf scaling if your running up to 7% LTFT trim. And check for leaks in exhaust before O2 sensors, you did use new gaskets when you installed headers ?
i did not. but i checked for leaks after the first install and was checked again maybe a month or two ago.. its weird that it would pull fuel even tho its so far lean from the commanded a/f
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Old 04-29-2014, 11:57 PM   #1730
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i did not. but i checked for leaks after the first install and was checked again maybe a month or two ago.. its weird that it would pull fuel even tho its so far lean from the commanded a/f
I'll put a $1 on new gaskets sorting it out. rearly weird stuff happens if you have leaks near O2 sensor, do all 3
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Old 04-30-2014, 09:41 AM   #1731
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I'll put a $1 on new gaskets sorting it out. rearly weird stuff happens if you have leaks near O2 sensor, do all 3
ill give them another check and report back.
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Old 04-30-2014, 12:50 PM   #1732
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just got my OFT a couple days ago, flashed yesterday morning, and datalogged last night. run is 3rd gear WOT. Seems to be running pretty rich.. doesn't seem to be very ideal.. any thoughts and/or comments would be greatly appreciated! Thanks! Mods are evo3 catback and f20club intake

http://www.datazap.me/u/gabeg86/orig...0&data=1-2-6-8

edit: is it also strange that my throttle position is never at 100% when WOT?
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Old 04-30-2014, 01:30 PM   #1733
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Quote:
Originally Posted by gabeg86 View Post
just got my OFT a couple days ago, flashed yesterday morning, and datalogged last night. run is 3rd gear WOT. Seems to be running pretty rich.. doesn't seem to be very ideal.. any thoughts and/or comments would be greatly appreciated! Thanks! Mods are evo3 catback and f20club intake

http://www.datazap.me/u/gabeg86/orig...0&data=1-2-6-8

edit: is it also strange that my throttle position is never at 100% when WOT?
That all looks normal and safe for this tune.
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Old 04-30-2014, 01:37 PM   #1734
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Originally Posted by gabeg86 View Post
just got my OFT a couple days ago, flashed yesterday morning, and datalogged last night. run is 3rd gear WOT. Seems to be running pretty rich.. doesn't seem to be very ideal.. any thoughts and/or comments would be greatly appreciated! Thanks! Mods are evo3 catback and f20club intake

http://www.datazap.me/u/gabeg86/orig...0&data=1-2-6-8

edit: is it also strange that my throttle position is never at 100% when WOT?
Throttle taper off to 90% by redline is normal. Your logs do show it running a bit rich due to the FA20club intake. I recommend just driving around for another day or two and wait for the LTFT to settle. You may not have giving it much learning time. It may move a bit more negative and adjust AFR accordingly. The other option is to adjust your MAF scale table to compensate for the FA20club intake.

Cheers
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Old 04-30-2014, 02:58 PM   #1735
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That all looks normal and safe for this tune.

Quote:
Originally Posted by shiv@vishnu View Post
Throttle taper off to 90% by redline is normal. Your logs do show it running a bit rich due to the FA20club intake. I recommend just driving around for another day or two and wait for the LTFT to settle. You may not have giving it much learning time. It may move a bit more negative and adjust AFR accordingly. The other option is to adjust your MAF scale table to compensate for the FA20club intake.

Cheers
Shiv
Awesome thanks guys! I'll probably rescale my MAF if it doesn't adjust much in the coming days. I appreciate the input fellas @shiv@vishnu @ML

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Old 04-30-2014, 08:13 PM   #1736
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whats the target afr for e85 that i should be aiming for?

it seems that some days its around 11.8-12 WOT, then once i saw it go from 12.5 to 12.7 then go down to 11.8-12 WOT

using stock airbox and filter, 4-1 EL catless headers and matching overpipe. stock exhaust from overpipe back

would a gasket leak after the o2 sensors cause it as i think there is a leak, i dont think its leaking before the sensors as i replaced the header to cylinder head gaskets with grimmspeed multi layer metal ones.

edit found a log that shows this

http://www.datazap.me/u/uncivilised/...zoom=2852-2958

Last edited by uncivilised; 04-30-2014 at 08:24 PM.
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