go 90mm TB or go home?
Jun 13, 2006 | 04:36 PM
#121
Originally Posted by Richard@WCCH
I'm aware of the issues some are having with respect to the throttle blade resolution and am looking for a fix. Nearest I can tell the trucks with the issue are '05 and '06 models althought not all '05 are having the problem. I don't have a DBW truck to experiment on so I'm having to rely on others to help with this. My suspicion here is the TAC modules, but I'm open to any help or suggestions regarding this matter. If the issue does come down to the TAC module, I'll be happy to replace the ones that are having problems. 
I'd like some feedback from everyone as to the engine and year of your trucks and if your experiencing the tb issue.
Richard
I'd like some feedback from everyone as to the engine and year of your trucks and if your experiencing the tb issue.
Richard
Mine is a:
2005 GMC Sierra 5.3
TAC module: TMD1-160E1
503-076908
"I just received my 90mm tb and kit from WCCH and plugged it all in.
I first checked my stock setup with my HPT scanner connected.
stock the TB goes all the way open 90* at 100% TPS indicated just before the throttle pedal is all the way down.
Next I checked the 90mm stuff, it will only open 75% of the way,
the scanner shows that the throttle is at 100% when the throttle pedal is only at 75% if you push the throttle more nothing changes still indicates 100%
and the TB is still only 75% open, I think this is a problem and my be why some are not seeing the expected gains from this mod."
Jun 13, 2006 | 10:50 PM
#123
This sounds like it could be a TPS adjustment problem to me (e.g. the TPS is showing max volts at 75% open). What does your TPS read with 0 input to the pedal?
EFI Live commercial and workshop allows for the ECT values to be edited. I wonder if these tables should be adjusted for the new tb? Does HPT have a similar feature these days?
EFI Live commercial and workshop allows for the ECT values to be edited. I wonder if these tables should be adjusted for the new tb? Does HPT have a similar feature these days?
Jun 13, 2006 | 10:51 PM
#124
Originally Posted by LBSBLOWN
I first checked my stock setup with my HPT scanner connected.
stock the TB goes all the way open 90* at 100% TPS indicated just before the throttle pedal is all the way down.
Next I checked the 90mm stuff, it will only open 75% of the way,
the scanner shows that the throttle is at 100% when the throttle pedal is only at 75% if you push the throttle more nothing changes still indicates 100%
and the TB is still only 75% open, I think this is a problem and my be why some are not seeing the expected gains from this mod."
stock the TB goes all the way open 90* at 100% TPS indicated just before the throttle pedal is all the way down.
Next I checked the 90mm stuff, it will only open 75% of the way,
the scanner shows that the throttle is at 100% when the throttle pedal is only at 75% if you push the throttle more nothing changes still indicates 100%
and the TB is still only 75% open, I think this is a problem and my be why some are not seeing the expected gains from this mod."
Jun 13, 2006 | 10:56 PM
#125
quick lesson on TAC modules in their original design intent:
03-05 TAC module works with 03-05 truck TB and 03-05 PCM (BLUE/GREEN connectors)
01-02 TAC module works with 01-02 truck TB, 97-04 Vette TB, and 01-02 PCM (BLUE/RED connectors).
03-05 TAC modules have an aluminum mounting base, 01-02 TAC modules are all black plastic including the mounting base.
Originally Posted by Speartech
03-05 TAC module works with 03-05 truck TB and 03-05 PCM (BLUE/GREEN connectors)
01-02 TAC module works with 01-02 truck TB, 97-04 Vette TB, and 01-02 PCM (BLUE/RED connectors).
03-05 TAC modules have an aluminum mounting base, 01-02 TAC modules are all black plastic including the mounting base.
Jun 13, 2006 | 11:12 PM
#127
Jun 13, 2006 | 11:13 PM
#128
Originally Posted by DrX
Did you use your stock TAC module with the stock TB and the 02 TAC module with the 90mm TB when you did these tests? I don't recall if I tested the 90mm TB with my 04 TAC module to see what happened.
and would not work at all.
Jun 13, 2006 | 11:18 PM
#129
Originally Posted by moregrip
quick lesson on TAC modules in their original design intent:
The one supplied with my 90mm is the one (tAC) with the Plastic body and base, is the 2002 Plastic TAC the unit I need with the 90mm TB on my 2005 truck?
Jun 13, 2006 | 11:19 PM
#130
Originally Posted by LBSBLOWN
My stock 2005 truck has the tAC module with the alluminum mounting base.
The one supplied with my 90mm is the one (tAC) with the Plastic body and base, is the 2002 Plastic TAC the unit I need with the 90mm TB on my 2005 truck?
The one supplied with my 90mm is the one (tAC) with the Plastic body and base, is the 2002 Plastic TAC the unit I need with the 90mm TB on my 2005 truck?
