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Thread: leaning out tune?
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04-27-2017, 05:20 PM #111
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3000 stall
Originally Posted by Badazz 97 TA
I can try and get a video this weekend if it doesnt rain
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04-28-2017, 08:48 AM #112
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is it possible its the trans locking and unlocking the converter causing the jerking?
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04-28-2017, 10:59 AM #113
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No its staying locked tach never moves when locked in.
When the converter is unlocked (low speed driving) it will kinda surge at the very slightest amount of throttle, once the converter locks in then it jerks at very light throttle since it's locked. It even does it if you coast to a stop just not as bad.
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04-29-2017, 11:43 AM #114
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Could this be related to DFCO settings? Fuel injectors turning on and off?
SOLD - GONE TO A (VERY) GOOD HOME ! - 94 Formula A3+1: 381ci forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / CC solid roller / TH400+GearVendors OD / 4.11 Strange 12-bolt / 300-shot N2O / Spohn Suspension / roll bar / MoTeC M48 Pro engine management system /a few other odds 'n ends.
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The Following User Says Thank You to Injuneer For This Post:
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04-29-2017, 05:15 PM #115
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Very possible can I just disable it?
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04-29-2017, 05:30 PM #116
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With the stock cam, stock tune, you can feel the injectors turn back on when the RPM/MAP drops to a certain point. Might be more noticeable with a more aggressive cam. Closed throttle timing also comes into play here. Deleting DFCO altogether would seem to increase popping in the exhaust at decel, and waste a bit of fuel. I know my tuner initially had the DFCO set wrong, and just coasting at low RPM, very slight accel pedal, the injectors were turning on and off, and car was jerking along (manual trans). Took him about 2 minutes to fix.
But.... I'm not tuner.SOLD - GONE TO A (VERY) GOOD HOME ! - 94 Formula A3+1: 381ci forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / CC solid roller / TH400+GearVendors OD / 4.11 Strange 12-bolt / 300-shot N2O / Spohn Suspension / roll bar / MoTeC M48 Pro engine management system /a few other odds 'n ends.
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04-29-2017, 10:12 PM #117
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I have this issue, but I'm lazy and scared of bricking my pcm that I've flashed 90 times already so I'm leaving it lol. Originally Posted by Injuneer
Sent from my SAMSUNG-SM-G935A using Tapatalk2021 Charger Scat 392
1994 Firebird Formula 381 stroker - Carrying the torch! - 9.90 @ 134.3mph on a 200 shot
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E
10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!
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04-30-2017, 10:52 AM #118
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Lol, well if it ever stops raining I'll reflash it and see
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05-31-2017, 06:59 AM #119
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Has anyone had problems with o2 sensor extensions? Wouldnt that show up in the data log?
Thanks
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05-31-2017, 10:02 AM #120
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what type of problem? only issue i ever had with one was melting it.... Originally Posted by fullforce
2021 Charger Scat 392
1994 Firebird Formula 381 stroker - Carrying the torch! - 9.90 @ 134.3mph on a 200 shot
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E
10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!
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