Black LS1 T/A

Today I decided to use LS1-Edit to adjust the Normal Shift Point JUST for 1st at various %-ages of WOT.

I got it to where it's hardly noticeable that I have a SY3500 by making the lower percentage throttle range shift quicker from 1st to 2nd. Of course, Performance Shift points and higher percentages of WOT in the Normal Shift Points function I left higher.

This is SWEET! <img src="gr_grin.gif" border="0">

Dave Carney

Sweet...that's one reason I may buy it soon.

2K1_4mula

I am just curious, but during part throttle 1-2 and 2-3 shifts, is your converter locked at that point?

When you say its hardly noticeable, do you mean that the converter seems tighter?

I hope my questions make sense.

Black LS1 T/A

I don't think the converter is locking until I am in 3rd gear and 4th.

Imagine if your 1st gear is so short that you would start off in 2nd gear if you could. It's kinda like that. I've got it set to shift at
7 MPH at 0 % throttle,
8 MPH at 6 %
10 MPH at 12 %
12 MPH at 18 %
15 MPH at 25 %

So, as soon as the car rolls out, by the time I hit 10 MPH in normal acceleration mode, I'm in 2nd gear. When 1st gear shifted further out, it just seemed to hang there too long. Now, the engine does not rev so high to get the car moving up to speed and everybody's not looking at me like a fool! <img src="gr_grin.gif" border="0">

Does that make sense? <img src="gr_stretch.gif" border="0">

Hope that helps. I REALLY like that little change.

2K1_4mula

Yes, I understand it now.

Thanks, I will be messing with my shifts as soon as I get my LS1 edit.

DUKE

I have a SY3500 in a C5...its got the powerloaded PCM but is programmed for the Protorque 2400 that I had before. I am needing a flash file for the SY3500. Would you share the file for the converter with me? I will give you my first born or whatever you want. <img src="gr_images/icons/wink.gif" border="0">

Black LS1 T/A

I don't think just copying in my config is what you should do.

From the example I gave above, it seems better that you should look at your data and subtract a couple mph in the Normal Mode Shift Speed table to tune your car to what you want to feel.

What I have may be totally wrong for you. I'm no tuner that can just shoot you a file that will work for you. I don't have the experience someone like Ed Wright, etc., has across different gears, hp, tq, stall speeds, etc.

What I CAN do is try a different value in MY car, bit by bit and if something doesn't work, either back it up or revert to previous.

Please just try this: drive your car out at the speed you normally cruise, noting your speedometer indication. At the point where you wish it would shift, annotate that and program it when you pull back to the house. Interpolate from zero to about 25% throttle... that's only a few values... making a smooth speed curve into the higher stock values.

Use LS1-Edit to tune your car, not shoehorn in someone elses data. <img src="gr_sad.gif" border="0">

The last thing I want is someone pissed at me because my tuning for MY car dik'd up theirs. <img src="graemlins/gr_cry.gif" border="0" alt="[whiner]" />

If someone from around here wanted to use my other license, and I could work with them, I'd feel completely comfortable. But, I have a VERY bad feeling about just handing out an entire file over the internet/email right now. It just feels wrong on several different levels. Sorry... <img src="gr_sad.gif" border="0">

I will continue to offer info on what I am doing as I have above. I want to help. But I'm not qualified to tune your car for you ... at least not where the testing is completely out of my hands.

DUKE

Your info is meanless to me unless I have the data to compare to mine. Rather hard just to listen to "boy this rocks" without any documentation to see what rocks. I was not suggesting I wanted to shoehorn it in mine. If you are not confortable sharing that info...thats good to know so no one will ask. To each his own.

[ March 10, 2002: Message edited by: DUKE ]</p>

Black LS1 T/A

What's hard about dropping the values down in the table by one or two MPH and checking your results? <img src="images/icons/confused.gif" border="0">

Here's the latest values I used... I change around in search of the best results.

Your results may vary...

I STILL suggest you tune smart and not just copy-cat.

%Throttle 0 6 12 18 25 31 37 43 50 56 62 68 75 81 87 93 100
1-2 Shift 7 8 10 12 15 18 22 25 29 35 38 40 41 41 41 41 41

Black LS1 T/A

All that time I took to tell you HOW I got the feel I wanted from the shift and you say my info is meaningless to you? <img src="images/icons/confused.gif" border="0">

... Not to mention the guilt trip you tried to take me on... <img src="images/icons/rolleyes.gif" border="0">

Well, Duke... sorry my meaningless info was not enough for you.

DUKE

Guilt trip??? Surely you jest. You interpreted my remarks as trying to put a guilt on you. Give me a break.

ToplessTexan

[quote]Originally posted by Black LS1 T/A:
<strong>Please just try this: drive your car out at the speed you normally cruise, noting your speedometer indication. At the point where you wish it would shift, annotate that and program it when you pull back to the house. Interpolate from zero to about 25% throttle... that's only a few values... making a smooth speed curve into the higher stock values.

Use LS1-Edit to tune your car, not shoehorn in someone elses data. <img src="gr_sad.gif" border="0">
</strong><hr></blockquote>

DUKE, this strategy should give you curves similar in shape to the tables I sent you, at least at lower throttle. I agree with Black LS1 T/A, tinker in small steps.

Black LS1 T/A

[quote]Originally posted by SIR:
<strong>Black ls1 t/a:

Thanks for the t/c infor. I have a few questions. Right now my t/c table is set at 256 mph all across the board. Now I want to lock up my t/c and would like to know if you use the 2nd apply and 3rd apply tables or just the 3rd apply. Also should I leave the %tps values under say 75%tps alone?? Also non the releas should I enter the mph a few mph under the apply?

thanks

<img src="graemlins/gr_cheers.gif" border="0" alt="[cheers]" /> </strong><hr></blockquote>

I have been chomping at the bit to try the TC tables out. But, because my rear is about to fall out (waiting on my 12-bolt to arrive), I don't dare experiment with that just now.

Let me tell you what I plan to do as soon as my stuff is ready to hit the WOT tuning:

Yes, I doubt I will have the converter lock up in 2nd gear at first. I will do my initial testing in 3rd.

If you look at the threshold settings, notice with a value of 255, no matter WHAT your table settings are, the converter will never lock up at WOT.

I plan to at first see how the car responds with the stock tables and the threshold settings set at about the last 2/3's thru 3rd gear. 73 - 126 MPH is my 3rd gear range, so I may set the threshold to about, say 108 MPH. I don't want to bog down the engine too soon, but I want it to pull harder as it tops out the gear.

I may be completely off base, but I can quickly enough prove or disprove this theory. Then I will adjust the TC lockup from there. For all I know, I might not need any unlock at all. We'll see.

I would tune the values all the way up to 100% TPS becaue I want it to maintain lockup until I come back off it and am done.

As for your last question, I think I would set the release just under the apply. At those speeds I don't think I want the lockup going on while I'm trying to back out of it.

I'm just theorizing, and REALLY, you are the first person I've discussed this with.

Hope that helps you with your plan. <img src="gr_stretch.gif" border="0">

Black LS1 T/A

[quote]Originally posted by ToplessTexan:
<strong>

DUKE, this strategy should give you curves similar in shape to the tables I sent you, at least at lower throttle. I agree with Black LS1 T/A, tinker in small steps.</strong><hr></blockquote>

I'm glad someone else sees it that way. <img src="gr_stretch.gif" border="0"> I wasn't trying to blow Duke off in my first post, I was trying to explain how I approached it and how it worked for me.

ToplessTexan

Black LS1 T/A, not to get completely off topic, but how do you like your SY with those gears? I don't seem to see too many F-body guys running that converter.

[ March 10, 2002: Message edited by: ToplessTexan ]</p>

SIR

Black ls1 t/a:

Thanks for the t/c infor. I have a few questions. Right now my t/c table is set at 256 mph all across the board. Now I want to lock up my t/c and would like to know if you use the 2nd apply and 3rd apply tables or just the 3rd apply. Also should I leave the %tps values under say 75%tps alone?? Also non the releas should I enter the mph a few mph under the apply?

thanks

<img src="graemlins/gr_cheers.gif" border="0" alt="[cheers]" />

Black LS1 T/A

I think it was GREAT non-aspirated.

Since the blower, though, it is too loose for my taste, for the street.

But, when I was N/A it was the perfect compromise between streetability and launching at the strip. <img src="gr_stretch.gif" border="0">

Mike Senia has assured me I will not be disappointed with the PY3400E (ProYank 3400 Extreme) internals for my converter. It will pull harder for my SC.