04-28-2014, 11:53 PM | #1723 | |
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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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04-29-2014, 05:10 AM | #1724 | |
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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 ? Last edited by steve99; 04-29-2014 at 07:01 AM. |
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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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04-29-2014, 06:57 AM | #1726 | |
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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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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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04-29-2014, 07:06 AM | #1728 | |
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04-29-2014, 10:40 PM | #1729 |
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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
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04-29-2014, 11:57 PM | #1730 |
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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
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04-30-2014, 09:41 AM | #1731 |
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ill give them another check and report back.
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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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04-30-2014, 01:30 PM | #1733 | |
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04-30-2014, 01:37 PM | #1734 | |
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Cheers Shiv |
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04-30-2014, 02:58 PM | #1735 | |
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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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