I finally got my shift points were I want them and now I need to fiddle with my TC lock/unlock point. What is the recommended "performance setup? I am guessing that you want to keep it unlocked anywhere above say 20% throttle postition so the engine stays reved up.

 

Dobedo.

 

ive been messing with these tables for a while now as i just got my shift points set also.(went from 2.73 to 3.73) Ive tryed leaving it stock, changing it manually to what i thought would be right, and just simply dropping in the values from the performance tables out of a 94 ta a4 with 3.23 gears. Ive found the stock to be the best in the SOTP area anyway. the tcc values in a 2.73 car and 3.23 car differ so apparently the values should be changed according to your gear ratio. It would be great if there was a formula to calulate the changes. someone told me to divide 2.73/3.73 and scale the table by the result by the answer, but it made my car do weird things so i once again went back to stock settings. anyway, let me know if you discover anything, ill do the same

 

Well, I can plot various stock points and make an equation. You know; when I was sitting in Calc.2 years ago I was like "this is a total waste of my time". Dammit, I was wrong again. I wouldn't be surprized if the curve is exponential in some way. It is not linear for sure so dividing the whole table will not work very well. I am going to plot one of the stock ones out to see what it looks like. There are alot of "plug and jug" exponential formulas that require only the limits and variables. Maybe I will get lucky. They BIG problem is the torque convertor. They all act different behind different motors. This is a variable that can not be constant so there will be error from the get go. Anyway, anything that serves as a starting point may help. I was just trying not to reinvent the wheel by checking if someone out there has already been through this.

 

What would be nice if someone with LT1edit would take a stock file and change the gear ratios to see how it rescales the tables. Then plot those curves out. Anyone want to contribute by sending me the various shift table/TC numbers that LT1edit changes for the various gears (2.73, 3.42, 3.73, etc.) ?

 

yes i asked for that about 2 weeks ago. I wanted someone with lt1edit to share their shift points and tc values. No luck, i also emailed the lt1edit guys and asked for the formula straight out.. no luck

 

If you went from a 2.73 to a 3.73, just highlight the whole table and multiply by .732.
I've done it quite a few times, and never had the car owner complain.

 

ive done that but my cars feels weird. i cant explain it it doesfeel like a loss of power but it feels like its out of the power band when i do that.

 

also does tcc hot mode do anything?

 

When I had my gears installed and the PCM reprogrammed for the 3.42's by LT1 Edit, LT1 Edit scaled the converter lockup tables too. The converter was locking up a 36 MPH in 4th gear at low TPS instead of the stock 45 MPH. I copied the stock converter tables from my stock file into my 3.42 file and it was better.

If you tell me EXACTLY what you're needing, I'll try to help where I can.

 

A screen capture for each of the gear ratios would be very helpful. Something like this

http://community.webshots.com/photo/...44722598uKplpu
(click "view full size" at the bottom of the page)

Or, just the a copy/paste of the values into an Excel spreadsheet. We just need to see what the shift points and TC values are for the various gear ratios that edit assigns. Thanks for the help offer.

 

I finally had some time to let LT1 edit do all the calculations and export them to a set of text files. I have them if you're still interested. Just let me know and I'll email them to you.

 

Yes, send them to me. Thxs for taking the time to do it. It's been impossible to find someone who would. Like pulling teeth.

Did you do the normal or the performance tables?

 

could you also email them to me? thanks in advance

 

How big of a stall convertor do you have ? That can make a big differnce on driveablity. For example, a stock ls1 tables are set to lock up at 42 mph for 0-60% throttle which works fine for stock stall speeds. But when you have a 4400 stall and you want to pass someone lightly at 55 mph, the engine will only be at 1700 ish RPM whichwont give you much paasing power at all. So the ideal thing would be to get the convertor unlocked. In order to do that you have to give 61% throttle which will make the convertor flash to 4400 rpm, propel the car foward very rapidly, make a ****e load of noise, waste alot of gas and if it's raining outside make the car a bit sideways. Or if you accelerate from a stop light and just as your convertor locks up you notice the lanes ahead merge to 1 lane and you want to get in front of the guy next to you. Again you have to unlock the convertor. The fix is to set the lock up and unlock tables progessive to the throttle percentage. For example your now at 55 mph and you only have to give 40% throttle this time. Then the engine would rev up to 2800 rpm and you will lightly accelerate past the car you wanted to get in front of. Or if your at the stop light and you give 45% throttle, your convertor wont lock up till 60 mph, giving you plenty of time to get in front of the smuck beside you. It makes driving a big stall car much less eventfull and saves some gas too, which is really needed these days with these gas prices.