93M6Formula

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

TravisMcGill2000

iTrader: (2)

Yea u will. If not u will hit stall wall and send the tranny into limp mode. Ask me how i know lol

rich5368

iTrader: (2)

^^^What he said.

robsquikz28

iTrader: (246)

Yup and possibly mess up your trans and destroy it.

93M6Formula

Okay thanks guys!

Justinktm

iTrader: (2)

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

jrzdude

iTrader: (4)

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.

TwoFast4Lv

iTrader: (8)

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

MEAN LT1

iTrader: (2)

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.

Ed Wright

iTrader: (1)

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.

96capricemgr

iTrader: (1)

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.

Ed Wright

iTrader: (1)

Crap! Should have proof read! OBD1. Sorry.
If your converter is a 4000 or higher, it usually doesn't matter how you do it.
Most people do stay on it until on dry pavement.

bowtienut

iTrader: (1)

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.

Ed Wright

iTrader: (1)

Never seen a OBD2 PCM do it. Also never saw shutting off codes fix one. That was the first thing everybody tried. Hardest converters to cure (slip the most) were Yank and Fuddle.

bowtienut

iTrader: (1)

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.

TwoFast4Lv

iTrader: (8)

Usually would not **** from first to second and when you lift it would go straight to third.

Our first fix was to use a OBD-II PCM.

bowtienut

iTrader: (1)

Exactly. My very first launch with the harder hitting TC made it happen, and we fixed it right there by disabling the VSS code. I try to never let the tires grab by lifting suddenly in the burnout, so never saw it there.
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.

Ed Wright

iTrader: (1)

You would have noticed it at the ET shack when all you had going forward was 3 gear.

94whiteZ

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??

MEAN LT1

iTrader: (2)

Usually hits cars with anything above a 2800 from what Ive seen. I don't think what your describing is what were talking about.