Please visit the tuner section. I have had a post for about 4 days and some others are having same problems. Can't modify WOT shift points. Only WOT table found lets you mod MPH but no RPM points in that table. This is after a change of gears from 2.73 to 3.73.

Thanks,
JoMo

And Please don't flame for posting in this section. I did search all other forums and posted in both LT1 tech and Tuner with no help as of yet.

 

Start from square 1.
1. Did you change ALL your shift points by multiplying them by 63.37%? If not, thats a good place to start. You changed the gear ratio by 36.63% so your shift points need to come down by 1 minus .3663, hence multiplying the whole shift table(s) by .6337.

2. Then raise the MPH for each shift to the desired RPM shift. Use the Math Utilities from www.smokemup.com to get a MPH vs RPM table.

3. You need change the RPM thresholds for each shift. Make them slightly above the shift RPM and also make sure the fuel limiter is above these values.

Anywhere u have a tranny table that MPH based, multiply it by .6337. That should pretty much do it.

 

Under WOT, it uses both the RPM and the MPH. I set my MPH a little low for WOT, and use the RPM thresholds to adjust when it shifts.
Todd

 

The problem is my engine guy said he only saw the MPH table. And thought there may be another one that was RPM based but he didn't see it. Do any of you know which tables he needs to look for....is there an exact name on these tables or something.
Thanks,
JoMo

 

TimeBandit is having same problem. Here is what he has done.
we set rev limit in the ECM constants section via
fuel cut off 1st gear to 6800 rpm
fuel cut off 2nd-6th gear to 6800 rpm
fuel resume 1st gear to 6700 rpm
fuel resume 2nd-6th gear to 6700
set the speedometer scaler for the 3.73 gears
In the tables section we set the following
normal shift points
1-2shift 1000 rpm and 18mph, 2-3 shift 1000 rpm and 35mph, 3-4 shift rpm 1000 and 55mph
performance shift points
1-2shift 1000 rpm and 22mph, 2-3 shift 1000 rpm and 40mph, 3-4 shift rpm 1000 and 65mph
Manual mode same as performance mode

What are we missing.

Thanks,
JoMo

 

kickdown mode tables. Set them about 300-400rpm BELOW the rpm you want it to shift at....as a general rule-of-thumb.

Getting this stuff right can be a PITB because for some odd reason....the thing works differently for almost every car. I dunno if its the MAP readings (larger TB seems to have an affect), stall, gearing, tire size, shift kit, or a combination of everything, but no two I have seen act the same. Good thing you got the tuner so you can edit and test, edit and test, and more, more, more of the same.

 

Ok, i don't see the actual shift tables above. I cant remember the actual name BUT it shows each gear across the top (up and downshifts) and throttle position on the side. Its a big table with somewhere near 80 cells. There's also the same thing with Performance Mode. All the values are MPH.... and you have to multipy ALL the values by .6337.

Do me a favor, email me your file and let me look at it. I can make some changes to it. I've done enough work on my tables to feel very comfortable. DISCLAIMER*** I will NOT be responsible for any damages that could happen.****

 

I will get a copy from my engine tuner and e-mail it to ya. Just do a doc file with it that lets me know what you changed...so next time i change gears or something i can do it.

Much Thanks,
JoMo

 

ok guys here's what fixed it

normal and performance shift modes multiplied all mph and for up and down shift by .67
kickdown mode changed mph 1-2, 2-3, 3-4, to 35,72,115
hot kickdown changed the same
cold kickdown changed the same
only using the mph section of each.
Kickdown shift rpm threshold set at 6150 rpm
kickdown cold shift threshold set at 6150 rpm
kickdown hot shift threshold set at 6150 rpm
also there are 10 tcc modes that have to be set so that your torque convertor clutch works right

Thanks for all the help Impala SS
TIMEBANDIT
383 LT1: AFR Heads, Port Matched Intake, 1.6 SS comp rockers, Hooker LT's, Hooker Catback, NO Cat, TB Bypass, 228/238 Cam, 2800 vigilante, Build 4L60E, moser 12bolt w/3.73 Gears , Pulley Kit, 58mm TB and a art carr 4l60E.

 

That should work. It may shift a lil low at frist but increase the shift tables and thresholds to your desired shift point.

Good luck!

 

I spoke to soon guys
The tranny works fine as long as I dont load up the Torque convertor. Just leave the light and hammer it I get good shifts. I went to the track today to try my new trans. I loaded up the torque convertor nailled it on the bottom yellow, shift light came on at 6100 made shift bam no 1-2 shift let off and tranny goes into 3rd gear limp mode. tried lowering mph some more and shift rpm to 5500 and still no 1-2 shift. Bummer!!!!!!!!!!!!!!!!

I did a search on this problem ans there was a thread a while back about what the problem is. Is it related to the VSS and convertor slippage? Has anyone found any solution to the problem. and what is entailed in swapping a 95 to obd2 since this seems to be the only fix

 

Ah... you have the dreaded OBD1 "high stall" issue. I have the same problem when I hook fairly well.... Previously, a 1.8x wouldn't trigger "limp mode" but now a 1.9 triggers it. Haven't found a fix yet and lowering the mph doesn't work. Some Impala guys have said launching off idle works but I don't wanna launch of idle...

 

A buddy of mine did a test one night at the track.
When his tranny went into limp home mode, he let the car run for about an hour in the staging lanes waiting for another run.
When he finally got to the line and launched, he ran his best time of the night.
It launched in 2nd gear with a 1.7 60' and he said that it didn't feel like a 1.7, more like a 2+.

 

Got it fixed...it was some sort of cruise table. Not sure what that has to do with WOT. But changed that and it runs like a champ.

Thanks All,
JoMo

 

What version of the $EE definition files are you guys using? I am using a newer one (rev AG) that has a speedo calibration tool under the tools menu that will automatically adjust the PCM for your tire size and gear ratio. This will make all of your MPH numbers in your shift table accurate too, thus eliminating the need of timely mathmatical equations needed to adjust shift param's.