TQ lockup questions

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
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Sweet I thought maybe the rail pressure should exceed commanded to be on the safe side. No dropping at all, I just thought it should exceed it for safety buffer zone.

it goes up and down. every log ive ever taken (even on a stock tune) ive never seen my rail pressure stay at exactly the desired or above accept for when you first get on it quick, it may ramp though the desired for a split second then fall below. I know my CP3 cant keep up with the big tunes im runnin cause im about 3-4k below what desired is suppose to be. when you start seein a 1k and bigger gap between your desired and actual on a big tune, the CP3 is not keeping up. atleast thats the way i look at it
 

scratchrob13

<---30+ psi (both)
Jun 18, 2008
129
0
0
Boston|Suffield,CT|Lincoln,NH
May want to take a little fuel out of spool up... at lower rpms the CP3 doesn't spin as fast, and can starve out there. If you desired is 3k too low... however I think @ 23k you are still safe.

Some real tuners might be able to comment and tell you otherwise, but the upper WOT looks fine!
 

duratothemax

<--- slippery roads
Aug 28, 2006
7,139
10
0
Wyoming
Why anyone would EVER want to disable ABS on these trucks is totally beyond me. These are not sports cars with 50/50 weight bias and predictable handling/braking. They can have widely varied weight biases even depending on how much fuel is in the tank.

There is no possible way to get safe accurate braking without some sort of dynamic (read: active/electronic) proportioning system.

I dont care how good a driver you are; it is physically impossible to even come close to maintaining anything resembling "control" in a 7,200lb truck during a high speed panic braking/maneuvering event. Maybe in a straight line under perfect conditions you might stop a few feet sooner, but the whole point of ABS isnt to stop in a shorter distance; its to allow you to slam on the brakes and steer/avoid the obstacle without losing control. And it does that very well.

Ask any REAL driver/professional driver and I guarantee they wont have the stupid macho "puhh I dont need that electronic nanny crap, im a better driver than a computer that can make 4 independant braking applications/calculations several times a second" attitude. ;)

There have been dozens of tests with professional drivers on closed courses in very high performance cars, EVERY SINGLE ONE OF THEM that Ive ever read/watched acheived better lap times and maintained a much higher level of control with the stability control enabled. Yes, the effectiveness of the stability control system is only as good as its programming, and there are definitely superior and inferior systems. In my opinion the VSES on the new GM HD's is VERY well implimented and works incredibly well without being jerky or violent. I have heard that the new Super Duty system sucks, but I have yet to drive it/test it.

Ive even read on the Diesel Place about a case where a guy hated the idea of it and wanted to get rid of it. A few weeks later he posted retracting his initial opinion and told how it recently saved his life...he was cruising at high speed down a wet highway with his family and young kids in the back when a moose (or maybe it was a deer? I forget) ran out...without even thinking he slammed on the brakes and swerved as hard as he could to avoid it...BAD idea with a big top-heavy pickup truck, but under those conditions when you arent 100% paying attention, you dont have time to think...just as he felt the rear start to trade places with the front, the VSES intervened with a few quick hard brake applications and brought the truck right back in line and safely around the moose before he even had time to think about "counter steering" and "how to correct oversteer 101". If his dmax was a 2008 or older he would have been upside down in a ditch or worse.

Yes it would be easy enough to make a module that would disable the ABS and/or VSES, but if you guys want it you are on your own; Im not going to experiment with and promote disabling a device that could/will save your life.

If you want to mess around, fine, then put aside an extra 6 seconds of your life to press the button. Problem solved. For the rest of your normal daily driving (and towing), what is the harm in leaving it on?

Im sorry if Im coming off like an ass, but this is something I feel strongly about...

Ben
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
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Phoenix Az
May want to take a little fuel out of spool up... at lower rpms the CP3 doesn't spin as fast, and can starve out there. If you desired is 3k too low... however I think @ 23k you are still safe.

Some real tuners might be able to comment and tell you otherwise, but the upper WOT looks fine!

Me or turbo?? Turbo is tuned by a very reputable person so im pretty sure hes good there. I know its all in the CP3, gone round and round testing and checking different things and it all points to the CP3
 

Redbowties88

Sideways > Straight ;)
Aug 24, 2009
1,943
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609 New Jersey
do as you wish... i disagree but you have the right to your opinion.

i learned on corvettes, miata's, and 3/4 ton and up trucks. never once have i come into a situation where i was happy the abs activated. specially in the snow/rain. thats why on every previous vehicle ive owned or driven regularly the abs is not equipped from the factory or turned off
 

scratchrob13

<---30+ psi (both)
Jun 18, 2008
129
0
0
Boston|Suffield,CT|Lincoln,NH
Me or turbo?? Turbo is tuned by a very reputable person so im pretty sure hes good there. I know its all in the CP3, gone round and round testing and checking different things and it all points to the CP3
Turbo, not you.

His tune probably is intended to have a lift pump is all I am getting at.

But really you need to look at the logs fully... and see whats going on... which I am guessing Rob would want to keep between him and Turbo.
 

turbojamie

Member
Dec 7, 2009
101
0
16
Welp call me stupid disabling both traction control AND stabillitrac makes it run like a raped ape. Guess the nannies were just worse in it than i thought.
 

turbojamie

Member
Dec 7, 2009
101
0
16
Damn I really didn't realize no traction control light was still limiting this truck, damn this thing is fast! Can't wait for my lift pump and a little hotter tunes for the built trans.
 

DMAXchris

It’s only temporary!
Apr 28, 2009
2,273
2
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44
Natrona Heights PA
Why anyone would EVER want to disable ABS on these trucks is totally beyond me. These are not sports cars with 50/50 weight bias and predictable handling/braking. They can have widely varied weight biases even depending on how much fuel is in the tank....

Ben

Because ABS has always sucked. My tri-axle didnt have it and its was top heavy sob. No problems controlling it in a slide. Neither did my first 5 or 6 cars. I'm just sayin', I can drive better than 98.5% of the folks out there and I feel ABS is a burden. I prefer 0 computer interference with my driving. I'm smart enough to know that you cant steer when your tires are locked. I am very serious about getting rid of it and wondered if it was possible. Obviously it is. I would pay top dollar to have a safe way to disable the system.

Sorry for the OT.
 
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GeneralTJI

Turbo Todd
Jun 1, 2010
1,272
0
36
Colorado
Because ABS has always sucked. My tri-axle didnt have it and its was top heavy sob. No problems controlling it in a slide. Neither did my first 5 or 6 cars. I'm just sayin', I can drive better than 98.5% of the folks out there and I feel ABS is a burden. I prefer 0 computer interference with my driving. I'm smart enough to know that you cant steer when your tires are locked. I am very serious about getting rid of it and wondered if it was possible. Obviously it is. I would pay top dollar to have a safe way to disable the system.

I agree. I have disabled it on many vehicles and always felt better about controlling the vehicle. I have not driven my truck without it obviously, so I guess I can't claim it would work out better though I wouldn't mind trying...

I think it depends on who you are, and your driving capabilities....most people need ABS, but not everyone
 
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duratothemax

<--- slippery roads
Aug 28, 2006
7,139
10
0
Wyoming
Because ABS has always sucked. My tri-axle didnt have it and its was top heavy sob. No problems controlling it in a slide. Neither did my first 5 or 6 cars. I'm just sayin', I can drive better than 98.5% of the folks out there and I feel ABS is a burden. I prefer 0 computer interference with my driving. I'm smart enough to know that you cant steer when your tires are locked. I am very serious about getting rid of it and wondered if it was possible. Obviously it is. I would pay top dollar to have a safe way to disable the system.

Sorry for the OT.

Just disconnect the front wheel speed sensors....
 

duratothemax

<--- slippery roads
Aug 28, 2006
7,139
10
0
Wyoming
I think it depends on who you are, and your driving capabilities....most people need ABS, but not everyone

I have had formal advanced track/racing/driving schooling and experience, and I still completely disagree.

Give me a WELL DESIGNED stability control system that has a 'competition mode' (ie, a little bit liberal in when it intervenes) and Ill drive circles around you.

Everyone thinks they're a super good driver until they are cruising along half day dreaming/not paying attention and a deer jumps out and they just slam on the brakes and swerve without thinking.

Disabling it and saying you can have "better control" on your scooby is one thing, fine, I guess I believe you on that, but to say you can disable it in your truck and have even better control at high speed accident avoidance with a heavy load in the bed and/or a trailer is flat out laughable...im sorry no offense...
 

Redbowties88

Sideways > Straight ;)
Aug 24, 2009
1,943
1
0
609 New Jersey
I have had formal advanced track/racing/driving schooling and experience, and I still completely disagree.

Give me a WELL DESIGNED stability control system that has a 'competition mode' (ie, a little bit liberal in when it intervenes) and Ill drive circles around you.

Everyone thinks they're a super good driver until they are cruising along half day dreaming/not paying attention and a deer jumps out and they just slam on the brakes and swerve without thinking.

Disabling it and saying you can have "better control" on your scooby is one thing, fine, I guess I believe you on that, but to say you can disable it in your truck and have even better control at high speed accident avoidance with a heavy load in the bed and/or a trailer is flat out laughable...im sorry no offense...

ive had the exact thing happen to me more then once and if you swerve out of instinct there is a problem...
 

duratothemax

<--- slippery roads
Aug 28, 2006
7,139
10
0
Wyoming
k fine I guess im just a crappy driver and a little girl because I support ABS and stability control.

I commend all you guys for being such impressive drivers. I havent yet figured out how to be able to brake each wheel individually several times a second using just the one brake pedal that most cars have. Maybe some day everyone can teach me... :(

You might be able to control the vehicle and keep it on the road, but a well designed ESP/ABS system will be able to control it better and more accurately. Its physically impossible for any human to have the same authority over the brakes and which wheels do what. I WILL ADMIT....There are maybe 5% of road conditions where a good driver will absolutely have better control than ABS/ESP...one being loose gravel. ABS sucks on loose gravel. But the other 95% of the time it is more effective at high speed maneuvers and braking.

Kind of like the stupid seatbelt argument. How some people refuse to wear it "because my brothers uncles cousin was in an accident and didnt have it on and was ejected and survived and the other people in the car that were buckled died". 9 out of 10 times a seatbelt will save your life. And 9 out of 10 times ABS/ESP will maintain better control.

Plus, half the people that are of the macho "ESP/ABS sucks, every time ive tried it, it makes things worse and I lose control", its because you are trying to second guess the damn thing and drive the vehicle as if it didnt have ESP. If you are herky-jerking the wheel all around and counter steering, the ESP gets all confused, and yeah, it will "get in the way".
 
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x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
7,535
1
38
34
Lexington, Ky
You cant manually ground the TC for lock up with out burin up the solenoid. needs a pulse to it.

People have done it before, just saying. If it works in high HP truck (since its so hard to create a controller that works apperently) why not still use that. I'm sure alot of the real fast guys tear their trans apart once a year and inspect it. Whats a new solenoid when you need a new TC or other wear parts anyway.
 

Mike L.

Got Sheep?
Staff member
Vendor/Sponsor
Aug 12, 2006
15,681
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63
Fullerton CA
People have done it before, just saying. If it works in high HP truck (since its so hard to create a controller that works apperently) why not still use that. I'm sure alot of the real fast guys tear their trans apart once a year and inspect it. Whats a new solenoid when you need a new TC or other wear parts anyway.

When you manualy ground the TCC solenoid it will set off P0743 and you will lose reverse till you clear the code.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
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People have done it before, just saying. If it works in high HP truck (since its so hard to create a controller that works apperently) why not still use that. I'm sure alot of the real fast guys tear their trans apart once a year and inspect it. Whats a new solenoid when you need a new TC or other wear parts anyway.

Ive never heard of that. where did you hear that from? it works that way in dodges but not the same way in the allsion.