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Working with HPTuners for DOD controls

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Old Jan 15, 2007 | 12:48 PM
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Default Working with HPTuners for DOD controls

I had made another post on their forum asking when DOD control will be availible for LS4's since its on the vette's and they dont have it!

So i sent my file and such to Chris at HPT and he is going to look into getting the DOD switch for us.

This is helpful as i now have an 01 style Z06 cam and yellow springs from an 05' GTO im rebuilding the LS2 on. And a buddy who got a new lift recently so i can easily raise the car off the K member

So within a month perhaps i will have a cam install write up for these cars!
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Old Jan 15, 2007 | 01:09 PM
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sounds great keep us posted.
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Old Jan 15, 2007 | 03:15 PM
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blah, you suck
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Old Jan 15, 2007 | 03:28 PM
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Oh but i will try the DOD on first after the cam lol

Worst it could do is make a bunch of clatter from the lifters and not run as smooth in 4 cyl mode Absolute worst case is damage a lifter. This is why i want the DOD controls so i can just try the 4 cyl thing right in the neighborhood, if it clatters i just shut it off quick and turn off the DOD and resume as normal.

This will be the **** if the DOD works fine after the cam!
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Old Jan 15, 2007 | 03:48 PM
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Im going to say no it won't work.
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Old Jan 15, 2007 | 04:10 PM
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Originally Posted by eddiemoney
Im going to say no it won't work.
Chances are good it wont... The center section of the lifter will most likely bottom out with the outter body of the lifter internally when collapsed in DOD mode from the slightly higher lift.

Also it will be hard for the computer to time the lifter decativation so it would trap exhaust fumes in the cylinder at the last second like its supposed to do because of the duration and different valve timing events with the Z06 cam.

Do i care? not really. The potential of 50WHP is rather appealing w/o the aid of a blue bottle.
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Old Jan 15, 2007 | 05:01 PM
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looks like were getting DOD controls later this week!

http://www.hptuners.com/forum/showth...9007#post69007
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Old Jan 15, 2007 | 05:53 PM
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i guess we'll find out of the lifters are good for .590 lift or not
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Old Jan 15, 2007 | 10:00 PM
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Definitly interested in a cam that will make the LS4 climb like the LS1's, with a conventional valve train (no DoD - period!).

Mine only gains 2 mpg from the DoD, so I'll take the 50 hp please.

At the rate I'm going, I should be outa warranty in another 6 months. Gimme a price to do mine!
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Old Jan 16, 2007 | 06:45 AM
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I know it's easy for me to sit here and give my two cents and not have the ***** (or time and money) to do anything too exotic to my own car, BUT.... What if you disabled the solenoids in the intake valley that activate the oil pressure that engage the dod lifters. It may set a code or two but those could be delt with. Further, but would cost some extra $$, what about installing standard LS2 lifters in the 5.3. I don't know for sure they would fit, but I would bet they do. Then one would have a good ole engine with many many cam choices. Thats just my two cents. I'm still waiting to get a hold of a 6.0 liter block and see if an LS4 crank will spin in it, then if the 6.0 block works with all the LS4 accessory stuff???
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Old Jan 16, 2007 | 07:11 AM
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6.0L block you would have to drill and tap your own trans mount bolts, also the starter is mounted on the opposite side as normal, so mounting bosses will be an issue.

In another 8-9 months mine will be past warranty as well (drive alot) so im not really worried either lol It would require pulling the heads to put normal lifters in, not intrested in that whole project at this time.

This is my daily driver too, but since gas prices are down from $3.20 to $2.30 a gallon for 93 like when i first bought the car im no longer worried about fuel mileage that much since i generally do all highway driving anyway.
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Old Jan 16, 2007 | 08:17 AM
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Well so much for the 6.0 liter idea. That is good to know about the lifters also. Thanks again for the info, again. By the way, Intense shift kit should arrive today.
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Old Jan 18, 2007 | 08:56 PM
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Originally Posted by Kazmaniac
Definitly interested in a cam that will make the LS4 climb like the LS1's, with a conventional valve train (no DoD - period!).

Mine only gains 2 mpg from the DoD, so I'll take the 50 hp please.

At the rate I'm going, I should be outa warranty in another 6 months. Gimme a price to do mine!
sign me up also!!! i would love an extra 50 hp
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Old Jan 19, 2007 | 09:53 AM
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If its like any other wbody you can do the cam through the passanger wheel well. Loosen the cradle bolts on the driverside and remove them on the passanger side. I swapped a cam in my 98 regal GSX and it took about 10 hours. Well worth it, 15psi of boost now is yummy
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Old Jan 19, 2007 | 10:11 AM
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Originally Posted by BanditTA
If its like any other wbody you can do the cam through the passanger wheel well. Loosen the cradle bolts on the driverside and remove them on the passanger side. I swapped a cam in my 98 regal GSX and it took about 10 hours. Well worth it, 15psi of boost now is yummy
nope, no can do, have to drop it all, not enough clearance to get some things out of the way, plus the whole acc cover is one piece
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Old Jan 19, 2007 | 10:49 AM
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Yeah the extra cylinders make things tight, the whole cradle will have to drop below the level of the frame rail to silde the cam out. That requires un bolting the cradle and struts and exhaust and possibly many other hoses and wires to get a 8" drop or there abouts.

Last edited by BADDLS1SS; Jan 19, 2007 at 01:50 PM.
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Old Jan 19, 2007 | 12:46 PM
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Your nuts Tom but i want to see it done. Give the cobalt some competion
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Old Jan 19, 2007 | 01:51 PM
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Looks like HPT is doing beta on it now, it will be avail in the next update.
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Old Jan 22, 2007 | 02:50 PM
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Wow, that sucks guys. I guess my cam swap wasn't that bad considering what you have to go through.
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