LS1 guys with 373 gears, at 45 mph at WOT you still get that screaming performace?
10-12-2004, 11:26 AM
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LS1 guys with 373 gears, at 45 mph at WOT you still get that screaming performace? iam trying to solve this downshift problem with my car, i have a 00 LS1 camaro with 373 gears and i got the ls1 edit and my car does downshift at 40mph for that screaming peformance but know if i go 45 mph it wont downshift at all for that screming performance, this is my first car Ls1 A4 with 373 gears, is it possible that this is normal for 373 gears not to downshift into second? i mean 45 isn;t that fast at all and i imagine that it should downshift into 2 gear when i floor it, it does when iam at 40 mph or under but if iam at 45 mph nothing it wont downshift, just wondering you guys with 373 gears with an A4 trans does your car downshift to second gear for that screaming performance when you are crusing at 45 mph or faster?
Last edited by whataretheodds; 10-13-2004 at 01:56 AM.
10-12-2004, 03:24 PM
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Mine will not down shift at 45. If I want it down I have to manually put it in 2nd. Not a highly recommended method as far as wear on the tranny so I don't do it very often.
I've got a 99, 3.73's with a 3200 stall and shift kit.
I've got a 99, 3.73's with a 3200 stall and shift kit.
10-12-2004, 05:01 PM
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I'm convinced the problem has to do with the A4 shift tables, not the converter or gears.
Mine does the same thing.
The solution has to be in the tune, not the parts. The factory tune and shift tables are set up for 3.23 gears.
When I had a Hypertech programmer and went 3.23-->3.73, my shifting was perfect with the factory tune and 3.73 gears (but speedo/mileage was off and shifts occurred at super-low MPH - but kickdown etc was perfect). When programmed for 3.73s with the HPP3 the kickdown/shifting problem was there again.
Bad30th
Mine does the same thing.
The solution has to be in the tune, not the parts. The factory tune and shift tables are set up for 3.23 gears.
When I had a Hypertech programmer and went 3.23-->3.73, my shifting was perfect with the factory tune and 3.73 gears (but speedo/mileage was off and shifts occurred at super-low MPH - but kickdown etc was perfect). When programmed for 3.73s with the HPP3 the kickdown/shifting problem was there again.
Bad30th
10-12-2004, 05:04 PM
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Are you saying that if you edit your part throttle
and WOT shiftpoints, it refuses to do what it's told?
Or, you just haven't edited the part throttle, 90-100%
columns to do it?
45MPH on 3.73s would be insane for a 2-1 kickdown,
kooky on 3.42s and only sensible on 3.23s if you had
a pretty high rev limit and powerband. I -upshifted-
at 41MPH and 6000RPM on 3.23s.
A higher-stall, medium to high STR will make up for
not downshifting, somewhat.
and WOT shiftpoints, it refuses to do what it's told?
Or, you just haven't edited the part throttle, 90-100%
columns to do it?
45MPH on 3.73s would be insane for a 2-1 kickdown,
kooky on 3.42s and only sensible on 3.23s if you had
a pretty high rev limit and powerband. I -upshifted-
at 41MPH and 6000RPM on 3.23s.
A higher-stall, medium to high STR will make up for
not downshifting, somewhat.
10-12-2004, 07:17 PM
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i brought my car to finish line performance and they changed the shift tables for 373 gears, i still have no 2nd gear downshift at WOT at 45 mph, they told me me that it may be a trans issue, i dont think its a trans issue, i think its something with the programmer, just not sure what it is, but they told me that everything is all set properly, i just dont know
Last edited by whataretheodds; 10-12-2004 at 07:24 PM.
10-12-2004, 10:06 PM
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Will it downshift into 2nd in the 60-70ish mph range??(prolly a few mph diffrent with 3:73's) For my stock 3:23's 2nd will wind out at about 84mph. And anything over 70mph will only net a 3rg gear downshift and feel like a dog.
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10-12-2004, 10:56 PM
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nope anything 45 mph or faster at WOT theres no second gear downshift, only downshifts in third which crawls not that seat in your pant feeling you get
10-13-2004, 12:44 AM
#11
Originally Posted by whataretheodds
so then is this normal for my 373 gears not to downshift into 2nd gear at WOT at speeds of 45 mph?
my bad, thought you ment 1st gear. Yes it should downshift to 2nd at 45mph. If its not then something is probably wrong with your wot shift table. I'm downshifting into 2nd up to 70mph
10-13-2004, 01:11 AM
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this is getting to be a pain, i dont get it first i brought it to power house performance, i got the LS1 edit installed for my 373 gears after that it wont downshift into second gear when iam crusing at speeds of 45 mph or faster? so after that i visted finish line performace and they changed my shift points and a few other things in the tables, but still i dont have my second gear downshift at WOT at 45 mph or faster?? i called them up and he says its not the LS1 edit it may be by TPS but i check it and i get 4.38 volts at WOT and also he says that it may be my trans, i know its not my trans, my trans is stock, low miles, no slippage, so iam stuck what can it be?? what can be wrong with my WOT shift tables? 
Last edited by whataretheodds; 10-13-2004 at 01:22 AM.
10-13-2004, 01:22 AM
#13
id go with the tables.... just get the trans kit with the manual valve body (b&m trans pack i believe) and be done with it all thats my plan for now i just down shift and then afer the down shift put the selector back in OD as so to let the computer perform the upshifts
10-13-2004, 01:45 AM
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i never knew getting 373 gears with an A4 trans would be a pain in the butt getting it to downshift to second gear at WOT at 45mph, i just dont want to manually downshift it cause it will put stress on the trans, all i want it to do is downshift into second gear automaticly when i floor it at WOT, it was so much easier when i had my 96 z28 6 speed, dam A4 trans
10-13-2004, 09:11 AM
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Go into Edit, check your WOT Shift Speed values
(especially the downshifts). Then, check your logs
for WOT TPS% reading, and the Edit WOT TPS
enable %, to make sure you are exceeding that
when you try. And, check the part throttle tables
and make sure that these have also been scaled
down in MPH for the new gears. They have a 100%
column and it may be that if you have a disagreement
between the 90%, 100% column values and the WOT
values, you're stuck with the one you didn't want.
Sync them up if they aren't. I think "dyno tuners"
often don't care too much about part throttle stuff
but that "makes" the street driving experience.
(especially the downshifts). Then, check your logs
for WOT TPS% reading, and the Edit WOT TPS
enable %, to make sure you are exceeding that
when you try. And, check the part throttle tables
and make sure that these have also been scaled
down in MPH for the new gears. They have a 100%
column and it may be that if you have a disagreement
between the 90%, 100% column values and the WOT
values, you're stuck with the one you didn't want.
Sync them up if they aren't. I think "dyno tuners"
often don't care too much about part throttle stuff
but that "makes" the street driving experience.
10-13-2004, 07:34 PM
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well i emailed finish line performance and they say that the 3.73 gears the rpm is to high at 45 mph to allow a 4-2 downshift, just isn't going to happen, and its bad for the trans, so then i guess its normal for 373 gears not to downshift to second gear at WOT when crusing at 45 mph???
10-13-2004, 07:50 PM
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i noticed this on my g/f's 2000 Z, i aint ever drove a auto ls1 car till hers and noticed that hers wont even downshift into 1st going like 30mph....and noticed the 2nd gear as well....just seems like when i had my 94 Z (auto) that it would downshift into those gears at those mph's no prob...i didnt know what to think...it feels like a complete turd though...
Jon
Jon
10-13-2004, 08:23 PM
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Originally Posted by whataretheodds
well i emailed finish line performance and they say that the 3.73 gears the rpm is to high at 45 mph to allow a 4-2 downshift, just isn't going to happen, and its bad for the trans, so then i guess its normal for 373 gears not to downshift to second gear at WOT when crusing at 45 mph???
If you upshift at (say) 69MPH 2-3 you should be able to
downshift at 65 or below, sensibly. Downshifting to 2nd at
45 should put you onto about 4000RPM. That sounds like a
bogus answer to me. Have you followed up on the things
I suggested you check out in Edit, yet?