alright, I did my first tune with tunercat. Got ALOT of things right...pretty proud of myself. Then I decide to change the shift points a tad, now all I do is bounce off the rev limiter. So I go back in and change a few things and I stil have them problem. Does anyone have a good shift pattern for a 94 a4? I mean I know alot of people use these programmers, but I never see anyone share their stuff. besides the page brent put together, which has some nice stuff, but not anything new in awhile. So if anyone would like to share with me a nice HARD shift pattern for a 94 a4 it would be great. And if not, I will keep tweakin...but man we should share more!

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Arrest ME Red 1994 Camaro Z28 Convertible
just a chip and a muffler, well maybe some headers
http://home.attbi.com/~mycamaro/

 

Q Do you want to change the shift points or do you want to firm up the shifts or both or what? The shift POINT change is a little tricky but you can handle it.Remember that the MPH and RPM values both have to be met in order to shift When tuning for WOT otherwise it goes by MPH vs TPS. If you want shift FIRMNESS(this is where nobody likes to share)The best bet is to work with the line pressure offsets(main line pressure modifier vs current gear), larger numbers add more pressure and smaller numbers take away pressure.I can give you an example if you like? What are you tuning for WOT or all around driving? BTW did that attachment show up okay?
Michigan Skip

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Michigan Skip's Flamed 95
95Z28, K&N TPIS 150hp NOS & 27mpg!
MSD 6AL, Window switch,Ford SVO 24# injectors,
2.73's (3.42's to come) Edelbrock headers, Flowmaster exhaust
BMR SFC,LCA,STB

[This message has been edited by s_willis (edited July 30, 2002).]

 

Yeah the attachment showed up ok, thanks. I am trying to tune the shift points for WOT for this saturday at Stanton. I want to strech the gear as long as possible with out damaging the tranny. With the shift kit I already have in the tranny this will work nicely for my shifts. Make them nice and firm, but at the same time give me as much of the sweet spot as I can get in the run. I have a copy of my stock file, and of my HPP+ file before I removed it:d I had a few problems with my first tune throwing a error. I went back in and fixed that, but them I got my rev limiter problem. So I went back in again, and it didnt change. Then today after work...most of my posts are at work:d... I tried to go to the factory stock program...the car refused to even try to start. Turned key and got nothing. So I went back to the HPP+ program I had before. Now the car is running on the HPP+ program, but it is not what I want. My two main concerns right now are to firm up the shift points, and lean the engine a little. Dam! thing runs like a pig when it comes to richness. I havent had a chance to run my Scan program again yet as now my laptop crashed. I am in the middle of reinstalling it. Should have it done by tomorrow night, so that gives me Thursday and Friday to get this thing together. Not a big deal, if it dosent get done by Saturday for Stanton, then at least I have a baseline to tune off of and see the improvements Just very frustrating. I know how to work on cars, have done it for a long time, and I know computers... have for a long time. But get them together and it is a major PITA!!!! I will get it, just gonna take some time. Any help you can offer Skip would be welcomed with open arms.

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Arrest ME Red 1994 Camaro Z28 Convertible
just a chip and a muffler, well maybe some headers
http://home.attbi.com/~mycamaro/

 

OK, here's what I do. One thing at a time,Kickdown Shift RPM Threshhold should be set to the rpm that you want to shift at. 1>2 2>3 and 3>4. Keep in mind that you won't ever see 4th gear at the track!!! Then you have to go into the Kickdown/Up/Down Shift points and set the mph lower than it shifts at now. The PCM has to see both values to shift at WOT.Make sure that the downshift mph values are lower than the upshift values or it will act funny on you. You really should try to log some data to help you see what is going on too! By doing what I described you are setting the mph low enough that the PCM is waiting on the rpm. Make sense? That's how I understand it, and that's how it works for me. To firm up the trans a HPP+ does a fair job but if you want hard shifts at WOT Go into the Line Pressure Modifier In WOT vs RPM and bump the numbers up a little.Lt1 edit does it a little different but TunerCat has a table just for WOT. I am NOT Sure but try by raising the numbers maybe one at a time for the rpm range you think you need to be in. I wouldn't start until maybe 2560 to 6144 to start. Dr. Mudge might be the one to straighten us out on this part. HINT HINT Or you can definitely go into the Main line pressure modifier vs Current gear and change the table settings for 93.8 and 100kpa across the board(1>2 2>3 3>4) Mine are set at 4 now. Not really what you would call really hard shifts though. Get that part down and then move on to the A/F ratio.
Keep me posted on what you end up with. I'll even e-mail you my cell # so you can reach me if you need help(if you want it) I'm headed to the track Fri down at Osceola to try out some things myself.
Later
Michigan Skip


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Michigan Skip's Flamed 95
95Z28, K&N TPIS 150hp NOS & 27mpg!
MSD 6AL, Window switch,Ford SVO 24# injectors,
2.73's (3.42's to come) Edelbrock headers, Flowmaster exhaust
BMR SFC,LCA,STB

[This message has been edited by s_willis (edited July 31, 2002).]

[This message has been edited by s_willis (edited July 31, 2002).]

 

You are the man skip. Finally someone who speaks my language....the language of the dumb I understand exactly what you said. I am working on my laptop right now, had a pretty good crash and had to do a format and reinstall. When it is back up I will mess with it and test it...hoepfully on Saturday. I will get back with you on this. Also I would love a cell#. Dam! right I want the help. I accept any I can get, and when someone needs some I try to give. Thanks man...this is why this board is so great

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Arrest ME Red 1994 Camaro Z28 Convertible
just a chip and a muffler, well maybe some headers
http://home.attbi.com/~mycamaro/

 

A little trick we have use for a few years is to drop RPM low(1025rpm) and it seems to help the shift happen faster due to PCM already having RPM flag met.

Good luck!

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Ellis
Team Captain
Team North West F-Body
www.teamnwfbody.org

 

makes it shift faster at WOT, or makes it not slip into gear....please clarify. Mine shifts hard already with the kit, in fact second gear will always break loose if you are rompin on her. But if you mean it will snap the shifts harder then I might give it a try.

 

Q, I think Ellis explained how to change shift points(not firmness) just opposite of the way I told you. Set rpm REAL low and change shift points according to mph. That works too.
Remember that the values for the shift mph must be the same in the three tables:
"Kickdown Up/Down Shiftpoints", "Normal Up/Down Shift points", and Performance Up/Down Shift points" for the cells 93.8 and 100 %TPS on the upshifts.i.e. the 1>2 upshift mph must be the same for all three tables, the 2>3 shift mph must be the same for all three tables and the 3>4 mph must be the same for all three tables.As an example my 1>2 is set at 43 my 2>3 is set at 76 and my 3>4 is 143.
Skip

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Michigan Skip's Flamed 95
95Z28, K&N TPIS 150hp NOS & 27mpg!
MSD 6AL, Window switch,Ford SVO 24# injectors,
2.73's (3.42's to come) Edelbrock headers, Flowmaster exhaust
BMR SFC,LCA,STB

 

I bet that is part of the problems, I never checked to see if they were the same across all three areas. duh

 

Skip covered it. For firmness i make sure that the offsets are at LEAST set tp zero or better with a more at WOT

BTW the PCM seems to like the low RPM settings because 95% of the trans section is writen in MPH and not RPM

Good Luck!

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Ellis
Team Captain
Team North West F-Body
www.teamnwfbody.org

[This message has been edited by OneFlyn95z28 (edited August 01, 2002).]

 

Went to the track last night. I made a couple of runs w/o nitrous and the trans shifted perfectly! I had it set to shift at 5500 all three gears in the hot shift and kickdown tables. set mph to 43,76, and 143. Funny thing though, when I ran w/nitrous it seemed to be waiting for something to happen.It sounded and felt like it was topped out both rpm and mph wise. Maybe my imagination? I have logs of all runs so I'll look to see anything different. I can't imagine why it would be different running with or without nitrous as far as shiftpoints is concerned. I'll say one thing though, when the window switch kicked the nitrous in !!!!
Skip