Author Topic: Tuning from Nelson Performance (Read 2072 times)

Fowlhunter · « **on:** April 16, 2009, 09:56:09 AM »

I'm in the process of ordering the wiring harness and the tuned/activated PCM to control my 05 GM electric fans mod. I want to try to bring the Ole girl to life a little (No tire smokin) so I was thinking about having NP remove a percentage of the TM but what is that number??? I was also thinking about having them change the shift points in the tranny but once again what RPM's should I have them shift the Ole girl????

Keep in mind, I'm not looking to run the Ole girl at the strip and I'm not looking to smoke the tires, I simply want a little more performance and maybe a little better gas mileage from her!! Any help here is appreciated!!! I occasionally run her with the tow/haul mode on, she seems to have much more life and I like the way she shifts and when she shifts.

Thanks, FH

Main One · « **Reply #1 on:** April 16, 2009, 05:49:54 PM »

If you are fairly stock, ie no nitrous, or forced induction, then I would eliminate all torque management.

My transmission shift points may be more aggressive than what you are looking for, but here is my WOT shift rpm settings:

Main One · « **Reply #2 on:** April 16, 2009, 05:52:00 PM »

Here are my non-WOT shift points based on vehicle speed and throttle position.

Once again, these may be more aggressive than what you would want.

Main One · « **Reply #3 on:** April 16, 2009, 06:01:49 PM »

Here are my torque converter locking/unlocking settings.

Main One · « **Reply #4 on:** April 16, 2009, 06:04:40 PM »

Also keep in mind that my higher than stock stall speed converter effects how I have set up my shift points, particularly for low to mid throttle situations.

WB · « **Reply #5 on:** April 16, 2009, 06:56:46 PM »

MyBigToy · « **Reply #6 on:** April 16, 2009, 07:05:59 PM »

Quote from: Main One on April 16, 2009, 06:04:40 PM

Also keep in mind that my higher than stock stall speed converter effects how I have set up my shift points, particularly for low to mid throttle situations.

AND that you have a cam which breathes to higher than stock rpm's.

Doesn't the stock cam/head combination start floating the valves @ around 5900?

Wouldn't you want to at least consider adding a Corvette Servo even to a stock tranny/engine power level if you eliminate torque management?

Steffan - I would suggest you talk with Allen and discuss with him what you are looking for. He's very familiar with our trucks so once he knows what your setup and goals are he can provide what you need in the programming.

Main One · « **Reply #7 on:** April 16, 2009, 07:17:20 PM »

Quote from: MyBigToy on April 16, 2009, 07:05:59 PM

AND that you have a cam which breathes to higher than stock rpm's.

Doesn't the stock cam/head combination start floating the valves @ around 5900?

Wouldn't you want to at least consider adding a Corvette Servo even to a stock tranny/engine power level if you eliminate torque management?

Steffan - I would suggest you talk with Allen and discuss with him what you are looking for. He's very familiar with our trucks so once he knows what your setup and goals are he can provide what you need in the programming.

I started running at least close to this high when the truck was much closer to stock than now. Of course with the cam, it keeps pulling at the higher engine speeds where when stock it was dropping off. If I didn't have the cam, I'd probably be running very close to this.

The Corvette or other servo upgrade is a good idea, even more so if you eliminate torque management. That said, eliminating it all together without a servo upgrade I don't believe is a big deal, although you will probably want to consider just how many miles you want to get out of your transmission versus your performance interests. I've got a billet servo, no torque management, and have a dyno sheet showing slightly more hp at the rear wheels than what the engine was rated for at the crank. For a frame of reference, I've ridden in a couple of AVs putting out about 200 more hp at the rear wheels than mine. My tranny has about 180,000 miles on it. With the servo installed and that many miles, these days it is shifting about like when it was young before the servo was installed.

Fowlhunter · « **Reply #8 on:** April 17, 2009, 08:19:13 AM »

WOW!!!! Valuable information!!!!!! Thanks to all!!!!!!
Now I may wait to remove the TM because I'm just not ready to do the servo in the tranny yet.

That might have to be my next mod (after the efans)!!! Where can one find the Corvette servo? Like I said, I'm not looking to convert my Av into a tire burner or a strip runner but simply try to gain a little more throttle response, better gas mileage, and stretch out the shift points.
What is the purpose of adding the Corvette servo to the tranny? My Av has 109,??? miles on her now, I would love to continue to drive her everyday as I do now without any major down time. Does the servo simply firm up the tranny?

Thanks, FH.

MyBigToy · « **Reply #9 on:** April 17, 2009, 10:36:38 AM »

You can likely buy the Vette servo from the dealership. Oregon Performance sells them on eBay and through their website. You'll find them on eBay also. The servo firms the shifts up by increasing the apply force to the clutches. You get less slippage with the Vette or a billet servo.

Fowlhunter · « **Reply #10 on:** April 17, 2009, 10:54:45 AM »

Quote from: MyBigToy on April 17, 2009, 10:36:38 AM

You can likely buy the Vette servo from the dealership. Oregon Performance sells them on eBay and through their website. You'll find them on eBay also. The servo firms the shifts up by increasing the apply force to the clutches. You get less slippage with the Vette or a billet servo.

What is the degree of difficulty of the servo install? Did you install yours?

See the attached link, is this the correct kit? How many are needed?
http://www.oregonperformancetransmission.com/Merchant2/merchant.mvc?Screen=PROD&Product_code=NTP-K51828C

MyBigToy · « **Reply #11 on:** April 17, 2009, 01:28:17 PM »

Quote from: Fowlhunter on April 17, 2009, 10:54:45 AM

What is the degree of difficulty of the servo install? Did you install yours?

See the attached link, is this the correct kit? How many are needed?
http://www.oregonperformancetransmission.com/Merchant2/merchant.mvc?Screen=PROD&Product_code=NTP-K51828C

That appears to be the correct kit to me. I can't say for sure since I used a billet servo in this application. From what I've read and looked at, it's a pretty easy install. The only caution I've seen is that you need to make sure the snap ring is fully seated. I've seen pictorial install instructions in several places - PerformanceTrucks.Net for sure has them.

I had a shop install mine since I was having the Yank TT2600 converter installed. I had them install my HD2 shift kit, 2-3 & 3-4 billet servos, a Beast Sunshell, Alto wide 3-4 band, Alto upgraded 3-4 clutch materials, and aluminum accumulator pistons while they were at it. I'd had all of this stuff sitting on the workbench from a group buy from a couple of years ago (except the converter, which I bought at Christmas-time).

Fowlhunter · « **Reply #12 on:** April 17, 2009, 02:30:16 PM »

Quote from: MyBigToy on April 17, 2009, 01:28:17 PM

That appears to be the correct kit to me. I can't say for sure since I used a billet servo in this application. From what I've read and looked at, it's a pretty easy install. The only caution I've seen is that you need to make sure the snap ring is fully seated. I've seen pictorial install instructions in several places - PerformanceTrucks.Net for sure has them.

I had a shop install mine since I was having the Yank TT2600 converter installed. I had them install my HD2 shift kit, 2-3 & 3-4 billet servos, a Beast Sunshell, Alto wide 3-4 band, Alto upgraded 3-4 clutch materials, and aluminum accumulator pistons while they were at it. I'd had all of this stuff sitting on the workbench from a group buy from a couple of years ago (except the converter, which I bought at Christmas-time).

This kit seems to be relatively cheap for what it does? Does just one kit do the tranny or would one need to purchase two kits (1-2 & 3-4)?

KY_BOB · « **Reply #13 on:** April 17, 2009, 03:36:03 PM »

Quote from: Fowlhunter on April 17, 2009, 02:30:16 PM

This kit seems to be relatively cheap for what it does? Does just one kit do the tranny or would one need to purchase two kits (1-2 & 3-4)?

That's the vette kit for the 1-2 servo. The billet servo for 4th gear will be another $70 or so.

Fowlhunter · « **Reply #14 on:** April 17, 2009, 03:45:26 PM »

Quote from: KY_BOB on April 17, 2009, 03:36:03 PM

That's the vette kit for the 1-2 servo. The billet servo for 4th gear will be another $70 or so.

Bingo!!!!!!! That's what I was looking for, I will need the vette servo kit for 1st, 2nd, & 3rd gears and the billet servo for OD?

MyBigToy · « **Reply #15 on:** April 17, 2009, 04:21:21 PM »

Quote from: Fowlhunter on April 17, 2009, 03:45:26 PM

Bingo!!!!!!! That's what I was looking for, I will need the vette servo kit for 1st, 2nd, & 3rd gears and the billet servo for OD?

There are only two servos, one for 1-2 and one for 3-4. You probably don't need the 3-4 servo.

Main One · « **Reply #16 on:** April 19, 2009, 03:38:50 PM »

I just did the 2nd gear servo. Took me about an hour or so. Wasn't too bad.

INresponse · « **Reply #17 on:** April 19, 2009, 07:10:43 PM »

Quote from: Fowlhunter on April 17, 2009, 08:19:13 AM

WOW!!!! Valuable information!!!!!! Thanks to all!!!!!!
Now I may wait to remove the TM because I'm just not ready to do the servo in the tranny yet.
That might have to be my next mod (after the efans)!!! Where can one find the Corvette servo? Like I said, I'm not looking to convert my Av into a tire burner or a strip runner but simply try to gain a little more throttle response, better gas mileage, and stretch out the shift points.
What is the purpose of adding the Corvette servo to the tranny? My Av has 109,??? miles on her now, I would love to continue to drive her everyday as I do now without any major down time. Does the servo simply firm up the tranny?

Thanks, FH.

I don't know how good or bad it is for me, but I am supercharged (for towing more than playing) and have adjusted all my trans settings and I still haven't changed the servo. But, maybe, maybe I might get around to changing that this year. I mean, what's the hurry, right? Oh, and I have 128,000 or so on mine. So far so good.

INresponse · « **Reply #18 on:** April 19, 2009, 07:20:30 PM »

Within minutes of finding this site I found this how-to thread, instructions and photos, right here on CAC.

http://www.chevyavalancheclub.com/index.php?action=articles;sa=view;article=59

bluedevil · « **Reply #19 on:** April 19, 2009, 07:23:00 PM »

Quote from: INresponse on April 19, 2009, 07:20:30 PM

Within minutes of finding this site I found this how-to thread, instructions and photos, right here on CAC.

http://www.chevyavalancheclub.com/index.php?action=articles;sa=view;article=59

lol...i was just about to post that link

Fowlhunter · « **Reply #20 on:** April 19, 2009, 08:45:07 PM »

Quote from: MyBigToy on April 17, 2009, 04:21:21 PM

There are only two servos, one for 1-2 and one for 3-4. You probably don't need the 3-4 servo.

Good deal, Thanks Joe!!!!

Fowlhunter · « **Reply #21 on:** April 19, 2009, 08:46:49 PM »

Quote from: Main One on April 19, 2009, 03:38:50 PM

I just did the 2nd gear servo. Took me about an hour or so. Wasn't too bad.

I was thinking about doing it myself but I would like to have a tranny shop give her a good once over!!!

bluedevil · « **Reply #22 on:** April 19, 2009, 08:48:57 PM »

Quote from: Fowlhunter on April 19, 2009, 08:46:49 PM

I was thinking about doing it myself but I would like to have a tranny shop give her a good once over!!!

Good. When i did mine,the snap O-ring was a pain the

Fowlhunter · « **Reply #23 on:** April 19, 2009, 08:57:39 PM »

Quote from: INresponse on April 19, 2009, 07:20:30 PM

Within minutes of finding this site I found this how-to thread, instructions and photos, right here on CAC.

http://www.chevyavalancheclub.com/index.php?action=articles;sa=view;article=59

Thanks for finding and posting the how-to thread!!!!!!