Stalling with FIC when coming to a stop? A quick fix!
Senior Member
SL Member
Joined: Jan 2008
Posts: 103
From: Long Island, New York
I will ask and get the exact answer but I know for a fact this was fixed during the WOT pulls on the dyno and he mentioned something about the ecu thinking the car was running lean because of torque and was compensating by adding more fuel which floods the system and causes a stumble and the AFRs to get pinned at 10.0 (on my AEM UEGO Wideband)... Hopefully he responds with a detailed email and if he does I will post his response here.
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Joined: Dec 2008
Posts: 402
Originally Posted by On3Sh0tBlaz3
To make a long story short, I met with that tuner that is worshiped over on supraforums today and had him take a crack at fixing my stumbling issues and stalling issues, rented 1 hr of dyno time at NLMS using their dyno dynamics dynamometer and fine tuned on the streets.
End result:
Stumbling issue.... GONE
Stalling issue.... NONEXISTENT !!
After all tuners and all the advice and arguments as to whether the issues were caused by the BOV or tune, the answer IS the tune and tuner knowledge, so happy my car is running smooth as stock right now :D
End result:
Stumbling issue.... GONE
Stalling issue.... NONEXISTENT !!
After all tuners and all the advice and arguments as to whether the issues were caused by the BOV or tune, the answer IS the tune and tuner knowledge, so happy my car is running smooth as stock right now :D
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Scionetics
KAD
SL Member
Joined: Oct 2005
Posts: 11,936
From: Western NY
Originally Posted by On3Sh0tBlaz3
To make a long story short, I met with that tuner that is worshiped over on supraforums today and had him take a crack at fixing my stumbling issues and stalling issues, rented 1 hr of dyno time at NLMS using their dyno dynamics dynamometer and fine tuned on the streets.
End result:
Stumbling issue.... GONE
Stalling issue.... NONEXISTENT !!
After all tuners and all the advice and arguments as to whether the issues were caused by the BOV or tune, the answer IS the tune and tuner knowledge, so happy my car is running smooth as stock right now :D
End result:
Stumbling issue.... GONE
Stalling issue.... NONEXISTENT !!
After all tuners and all the advice and arguments as to whether the issues were caused by the BOV or tune, the answer IS the tune and tuner knowledge, so happy my car is running smooth as stock right now :D
Senior Member
Scikotics
SL Member
Joined: Apr 2004
Posts: 1,129
From: Houston, TX (Puerto Rico)
any updates on this, we know why just need how to rectify it. Lately I've been experiencing this for the first time. Paul? By the way, it's always right before I hit full boost during wot or half way to full boost during part throttle.
that u stall? i keep hitting a 10 AFR wall & Studder at part throttle around 3k as i start spooling up... no matter what.. idk what the hell is wrong. also anyone know if the high level drive f's with the actual tune?
Senior Member
Scikotics
SL Member
Joined: Apr 2004
Posts: 1,129
From: Houston, TX (Puerto Rico)
oh no, no stalling problem at all. It's jsut the before full boost hitting the wall feeling. Right before going full boost I'm around low 12 AFR's then dips to like 10.2 for a split of a sec and then carries on with high/mid 11's as usual. Is not always on the same rpm, ex.
I do a pull from 2500rpms at around 3600 rpms it dips, everything else gravy.
Second scenario, I start the pull at 3200 rpms it dips at 3900rpms, everithing else gravy.
Now As u can see on the first one the afr's were perfect at 3900, but in the second one 3900 wasn't but 3600 was fine. It's just weird, like there's some kind of transition on the ECU right before hitting full boost.
This is with a very smooth fuel and o2 maps, no weird jumps from cel to cel.
I do a pull from 2500rpms at around 3600 rpms it dips, everything else gravy.
Second scenario, I start the pull at 3200 rpms it dips at 3900rpms, everithing else gravy.
Now As u can see on the first one the afr's were perfect at 3900, but in the second one 3900 wasn't but 3600 was fine. It's just weird, like there's some kind of transition on the ECU right before hitting full boost.
This is with a very smooth fuel and o2 maps, no weird jumps from cel to cel.
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