Bucking and hesitation after SD tune
05-01-2016, 08:48 PM
#1
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Bucking and hesitation after SD tune Hello guys I'm having a problem after my tune got put on my car. I had a good tuner put a SD tune on my car andt now my wide band after warm up my car runs terrible over 1/8 and more throttle. WOT and idle are fine. Only normal driving is affected. My wideband is literally all over the place when throttle is 1/8th or more except WOT. My tuner says that it's not the tune. I've replaced my fuel pump, both O2 sensors, throttle position sensor, and checked all wiring and plugs. Nothing has changed. I'll post a video in a few.
05-03-2016, 01:56 AM
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Shreveport, LA. My tuner said he could turn off DFCO and put it in open loop so I'm not knowledgeable on tuning but I assume after he said that it's gotta be in closed loop.
05-03-2016, 01:58 AM
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I will also add that he's gonna look into it when I get back from work in late may but said that it's not the tune. But after it warms up, that's when the problems occur.
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05-14-2016, 09:19 PM
#8
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everyones tuner is a good tuner but wot and idle are the easy parts.
drivability in a olsd tune takes a ton of work and i bet most cant even pull it off very well regardless of time invested.
dfco is decel fuel cut. that shouldnt cause any bucking or hesitation unless its WAY off. autos can surge if you dont have the thresholds right.
hesitation is usually lean transients as long as your steady states are good.
drivability in a olsd tune takes a ton of work and i bet most cant even pull it off very well regardless of time invested.
dfco is decel fuel cut. that shouldnt cause any bucking or hesitation unless its WAY off. autos can surge if you dont have the thresholds right.
hesitation is usually lean transients as long as your steady states are good.
05-15-2016, 07:03 AM
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