Is a tune needed when doing a stall converter??
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Joined: Aug 2008
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From: Nebraska
Is a tune needed when doing a stall converter?? I talked my buddy into doing a YankSS3600 stall on his 94 Z28 to compliment his 3:73's and I was wondering whether you need to get a tune or anything after we install it?
Thanks
Thanks
whats this stall wall ? i have a 3600 converter and i just upgraded to a 4200 would i need a retune it seems from 2nd to 3rd it stays there for a brief second then shifts and it seems slower then it should be
Does it need to be tuned immediately? Or is this only if you plan on running it WOT? Reason I'm asking is because I'll be installing one here shortly and will probably be driving it to meet the tuner afterwards, possibly for a few days.
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Joined: Nov 2001
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From: LT1 land...the "409" of the 90s!
The Delta is usually 5-8 seconds. We never could get it hit go on it while street driving.
I always have to thank Ed Wright for digging into the code and finding the real fix for us
I always have to thank Ed Wright for digging into the code and finding the real fix for us
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If your just driving around, not you will not need a tune. However, for performance purposes it will. With the gears it will shift early then it should, this is a simple fix. The converter is were your going to have to work. There are several wright-up's on how to fix this that work pretty well.
Only applies to OBD1 LT1 computers. Shows up after a burn out, when you launch it, the PCM will have defaulted to 3rd gear ("limp home " mode) until the car is shut off for about ten seconds and restarted. You could get past it by rolling out of the water, shutting it off, then restarting.
Last edited by Ed Wright; Jan 4, 2013 at 06:20 PM.
With OBD1(I run an OBD1 swap) I had an issue once when I let out of the throttle too much rolling out of the water and the wheelspeed went from like 90 to 1 almost instantly. Never had a problem when I kept the wheelspeed up till on dry and let it come down slower.
I had the "high stall TC" issue with OBD1: VSS error from tailshaft deflection on launch due to the higher torque going through the tranny (at least that's the story I was told). Anyway, it caused a 1-2 no shift. The fix is to turn off the VSS error code.
When I went back to OBD2, I also deselected the VSS error options and have had no problem even with the hard hitting 8" TC.
Edit 1/5/13: The fix is NOT the VSS error code. Moving the WOT mph threshold for the 1-2 shift down to 1 mph and letting it shift on the rpm trigger was the fix for mine.
When I went back to OBD2, I also deselected the VSS error options and have had no problem even with the hard hitting 8" TC.
Edit 1/5/13: The fix is NOT the VSS error code. Moving the WOT mph threshold for the 1-2 shift down to 1 mph and letting it shift on the rpm trigger was the fix for mine.
Last edited by bowtienut; Jan 5, 2013 at 08:23 AM.
I think we're talking about 2 different things here.
Mine was the 1-2 no-shift as soon as I went from a Yank 3000 to an Edge 3400 behind the stock engine.
I see above you were talking about default to 3rd gear. Mine never did that.
Mine was the 1-2 no-shift as soon as I went from a Yank 3000 to an Edge 3400 behind the stock engine.
I see above you were talking about default to 3rd gear. Mine never did that.
Joined: Nov 2001
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From: LT1 land...the "409" of the 90s!
Our first fix was to use a OBD-II PCM.
I think I shut it off and restarted it after I cruised down the track on that pass, so I never even noticed if it defaulted to 3rd gear only.
Last edited by bowtienut; Jan 4, 2013 at 07:28 PM.
Staging Lane
Joined: Jun 2012
Posts: 75
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From: sac
Does the stall wall even apply to baby stalls. I have a 94 cammed bolt on car with 2600 blew my trans then got stall and trans re built. Within 2000 miles I burned my 3 to 4 clutch. Is this because it started in third? New Kevlar clutches definetly getting tuned this time. Just curious if that's why??
Does the stall wall even apply to baby stalls. I have a 94 cammed bolt on car with 2600 blew my trans then got stall and trans re built. Within 2000 miles I burned my 3 to 4 clutch. Is this because it started in third? New Kevlar clutches definetly getting tuned this time. Just curious if that's why??