CPT Forums

9T7 TRANS AM · Last edited by 9T7 TRANS AM on Wed Mar 21, 2007 8:43 am; edited 1 time in total

A little background on my car:

1997 Trans Am, 36,000k Dark Green Metallic

Performance:
Borla Stainless Steel Cat-Back Exhaust
Crane Gold Race 1.6 Ratio Roller Rockers
Hooker Long Tube LT1 Headers & Mufflex Y-Pipe
MAD Z28 PCM Tune
MSD 6A Ignition Box, Blaster Ignition Coil, Super Conductor Ignition Wires, NGK TR55 Spark Plugs
Remove Air & Egr

Suspension/Chassis:
BMR Boxed SFC, Bolt-In LCA Relocation Brackets, Boxed LCA
BMR Adjustable Panhard Rod, BMR Adjustable Torque Arm
BMR LT-1 K-Member
GM OEM 1LE De-Carbon Shocks , Hotchkis LT1 Lowering Springs 1" Drop
Lakewood F-Body Driveshaft Loop
Prothane Sway Bar Bushings Front & Rear, Endlinks Front & Rear
Prothane Polyeurethane Transmission Mount, Motor Mounts
SLP 1LE 32MM Front Sway Bar
UMI Torque Arm Relocation Bracket

Drivetrain:
B&M Supercooler
GM Motive 3.73 Gear Set
Hawk HPS Performance Brake Pads Front & Rear
LS1 Front Brake Upgrade
MAC Rear End Girdle
SLP Line Lock
Torsen 2 Posi Unit

I ran a best of 13.10 @ 106, 1.90 60' last year in October. I picked up a slightly used Vig 3200 and I am hoping to go 12.75 and quicker this year.

Questions for CPT:

First off I assume that I need to have the PCM recalibrated to Remove the shift firmness, correct?

Secondly I need to add a "Shift kit" and I understand that you do not recommend Trans Go, but I read you don't use off the shelf shift kits?

What do you recommend when I go to install my converter?

Thanks,
Ken
_________________
97' Trans Am, 3.73, Headers, 1.6 RR, Suspension
13.10 @ 106, 1.90 60' Oct 2006

1SlowFormula · Posted: Mon Mar 19, 2007 1:30 pm Post subject:

OK, well I was looking over your post and you have a decent setup...

But I don't see anything in there that increases your shift firmness for you unless it's in your current tune, so there should be no reason to have it programmed to remove it. And if so, I would ask MAD Z28 how they tuned the shift firmness, if it increased line pressure then it might be an issue depending on the level it is set at.

I will let Frank answer this further though.

Good luck on the 12's I hovvered at 13.1 for a year or more myself before finally getting into the 12's...
_________________
John Pszenyczniak
95 Formula A4 2.73 w/ LS1 Taillights
Best 1/4 time to date:12.628 @ 105.85 w/ 1.723 60' Mods: PVC CAI, bored MAF, 1.6RR's,
Pacesetter LT's, ORY, dumped bullet muffler, 160* T-stat, t-body bypass, pcmforless tune,
CSR WP, CPT Race Rebuilt 4L60E and 3500 a Vig. my tire/gear caculator

9T7 TRANS AM · Posted: Mon Mar 19, 2007 2:27 pm Post subject:

Yep, MADZ28 tune in the PCM for shift firmness. I am not sure what he changed but I should be able to get an answer pretty easily. I am just trying to avoid any problems when I go to install my new/used converter.

1SlowFormula · Posted: Mon Mar 19, 2007 11:27 pm Post subject:

Converters normally cause you to "feel" that the shift has gotten softer so I don't think it matters. the problem will come in when you attempt to do a shift kit...
_________________
John Pszenyczniak
95 Formula A4 2.73 w/ LS1 Taillights
Best 1/4 time to date:12.628 @ 105.85 w/ 1.723 60' Mods: PVC CAI, bored MAF, 1.6RR's,
Pacesetter LT's, ORY, dumped bullet muffler, 160* T-stat, t-body bypass, pcmforless tune,
CSR WP, CPT Race Rebuilt 4L60E and 3500 a Vig. my tire/gear caculator

9T7 TRANS AM · Posted: Tue Mar 20, 2007 12:32 pm Post subject:

Is it possible to just leave the PCM calibration as is and install the converter to see how it "Feels"?
_________________
97' Trans Am, 3.73, Headers, 1.6 RR, Suspension
13.10 @ 106, 1.90 60' Oct 2006

1SlowFormula · Posted: Tue Mar 20, 2007 10:30 pm Post subject:

That's what I would do...

I wonder where Frank is???
_________________
John Pszenyczniak
95 Formula A4 2.73 w/ LS1 Taillights
Best 1/4 time to date:12.628 @ 105.85 w/ 1.723 60' Mods: PVC CAI, bored MAF, 1.6RR's,
Pacesetter LT's, ORY, dumped bullet muffler, 160* T-stat, t-body bypass, pcmforless tune,
CSR WP, CPT Race Rebuilt 4L60E and 3500 a Vig. my tire/gear caculator

9T7 TRANS AM · Posted: Wed Mar 21, 2007 8:41 am Post subject:

I am sure he is busy. I don't mind, I'm not in a hurry to get this done right now. I am going to try and run a 12.99 this spring the way the car sits now. I was so close last fall (13.10 @ 106), I think a little bit cooler weather and a good track can net me the number that people told me was not probable without the converter.

The best is going to be when I run within a few thenths of my buddies who both did H/C last year. Too bad for them they are M6's.
_________________
97' Trans Am, 3.73, Headers, 1.6 RR, Suspension
13.10 @ 106, 1.90 60' Oct 2006