Launching Techniques...
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Senior User
Joined: Apr 2004
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From: Maryland
Launching Techniques...
Going to take the truck to the strip this wednesday or friday and wanted to get some opininions on what is best way to launch these trucks from the experts who run their trucks on here. I will be in 120 mode....so powerbrake,if so to what rpm? 4wd?, 2wd?, turn off 4wd right after launch?, keep it in 4wd all way down?, etc etc etc.......Look forward to some responses.
Lead Driver
Joined: Oct 2004
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From: Columbia, MO
That's it. 4x4 hi. Roll up to the first set of staging lights, put your foot hard on the brake, then lay into the throttle to build the boost. That will probably creep the truck into the second set of staging lights, but if not you'll have to let it crawl just a bit. Build the boost, and as soon as the final set of yellows come on, take off. It will take a bit for the truck to move, so you shouldn't redlight.
Some will claim that it's hard on it to run it down the strip in 4 wheel drive, and to an extent that's probably correct. But, there have been many trucks that have done it in the past. I just hope your transmission is up to the task...that's a quick way to send one to the rebuild shop. Unless you have an aftermarket one, then you should be fine.
Good luck!! Let us know how it goes.
Some will claim that it's hard on it to run it down the strip in 4 wheel drive, and to an extent that's probably correct. But, there have been many trucks that have done it in the past. I just hope your transmission is up to the task...that's a quick way to send one to the rebuild shop. Unless you have an aftermarket one, then you should be fine.
Good luck!! Let us know how it goes.
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From: Maryland
Thanks guys....tranny should be ok....just plan on doing one or 2 runs....its a new tranny with BD accumator in it.......so should be good. Just trying to beat the blistering 17.3 @ 79 mph it did when it was stock lol Any range or estimates of what it should run now?
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leave as soon as the third yellow bulb lights up, if not your reaction time will suck. Also, definately use 4hi, don't use 2wd unless you want to fry the tires when you drop the brake...... trust me, I've done it. My 2wd will smoke the tires thru 3rd gear if I launch it at anything above 1200rpms.
Bowedup
Bowedup
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From: Maryland
JT Harvey...sorry about that.....6637, MBRP 4inch full exhaust with muffler, AIH plug,Wicked wheel, dp tuner stock, 40,80, 120 chip, guages, and tranny mod i said in previous post......thats about it.
And bowedup2003....thanks...but just so you know reaction times have nothing to do with et, so not worried about that. Time dont start until i move out of beams.
And bowedup2003....thanks...but just so you know reaction times have nothing to do with et, so not worried about that. Time dont start until i move out of beams.
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Posting Guru
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From: Elverson, PA
Originally Posted by bowedup2003
l Also, definately use 4hi, don't use 2wd unless you want to fry the tires when you drop the brake...... trust me, I've done it. Bowedup
Originally Posted by SilverBullet131313
Thanks guys....tranny should be ok....just plan on doing one or 2 runs....its a new tranny with BD accumator in it.......so should be good. Just trying to beat the blistering 17.3 @ 79 mph it did when it was stock lol Any range or estimates of what it should run now?
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From: Maryland
Originally Posted by jtharvey
With what you have listed, I'm gonna guess high 15's to mid 16's.
Do you have the waste gate unplugged? MAP line regulator or BRV? Exhaust backpressure code eliminator? CCV mod?
Do you have the waste gate unplugged? MAP line regulator or BRV? Exhaust backpressure code eliminator? CCV mod?
Lead Driver
Joined: Oct 2004
Posts: 7,413
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From: Columbia, MO
Unplug your wastegate. That will be the first thing that limits boost. You still shouldn't throw a code with the MAP regulator. It's still going to de-fuel because of high exhaust backpressure, but you should still see some improvement.