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Check the fuel filter for leaks and the distribution block on the motor.

It can be done without removing the turbo but it is a SOB and requires some tools to get it done. You need to remove the crossover intake bridge and the oil drain from the block and flex it out of the way some. All said and done I'm not so sure that just removing the turbo would not have been...

If I were in your shoes I would only have them replace the injectors and at the same time have them remove and reseal the injector cups. It's taking a chance but that maybe all your problems in one. If the injectors are leaking fuel it will cause the CP3 to appear to be weak, add fuel into the...

Change th efuel filter and make sure and check the two o-rings and inner seal when you replace it. I've seen plenty of them leak enough to let air in but not drip fuel out. Since the suction comes from the CP3 anything that let's air in when sitting will cause it to do what you've got going on...

When you say 1 quart low what do you mean? The Allison's are famous for pushing fluid out under the conditions you were in. I like to keep the fluid level at the very bottom of the hot area just for this reason. Check your fluid level on flat ground with the transmission at 170 - 180 fluid temp...

All the TCM's command Lockup at WOT regardless of Normal or Tow/Haul. If it occurs as a gear change happens you will not feel it. It's the same for both 5 and 6 speeds in a Allison equipped GM pickup. Now if you get into changing the programming things can be made different.

With the Garrett drop in you only need a normal converter, no extra stall speed. When looser converters are needed you would not want to use it for a daily drive/work truck. There is several ways to make converters but make sure you think about what you are really going to use it for. Once the...

The wheel pattern was changed due to the new weight rating. Since the old wheel are not rated to carry the load that the new truck will this keeps people from putting the wrong wheels on the new truck. Like it or not it's a good idea on GM's part to change the wheel pattern. It is not the same...

I've never tried to tell anyone its CHEAP. I've said , it's not for everyone. You need to compare apples to apples when doing your research so you truely know what your getting. It's a bitch to get in there and work on it but what I have done is try and correct some of the BS going on in this...

The simple fact is that the factory down pipe and factory up pipes were design to give a certain amount of clearance and be manufactures quick and easy. Opening the downpipe on a Duramax works plain and simple. Now as for how much it worth to anyone you would need to price all the parts that...

Piston protrusion should be .0088" to .0148" on all models. The various thickness gaskets correct for where they are within that specification. If they are flush with stock pistons then you have bent rods.

I already gave you the results from the dyno, sorry if you do not want to believe it. What I left out was that the boost also came up by 1-2 psi. The EGT was measure on a loaded pull on the dyno not a dynojet no load deal. Same test before and after, under the same test conditions. It was...

There are still many tractors and farm equipment that still to this day come with either injection for starting in cold weather. I have a unit that John Deere still makes and uses today in some applications.

Well I hate to disagree with you but the gas cannot expand in a fix size pipe so what happens is the pressure rises as does the velocity. Now as the exhaust cools it becomes denser and also becomes harder to move which again raises the pressure required to push it along. So now according to you...

There is no 07 LLY. That would be the later style piston not made by Mahle. It's used in the LBZ and LMM.

TTS makes what your looking for. There are 2 different models for the LB7 application and they have them both. It's a kit that replaces the downpipe and the front pipe. The downpipe is stepped in size to get it to fit, 3 1/2 to 4". IT's a stainless steel kit...

What happens if you go back to stock tuning. In my LBZ CC dually I get 16 in town and 18 mixed driving. I've never had it on the road without my 40' trailer so I do not know what it would get on the open road unloaded. That would at least give you a baseline to work from to see what's getting...

Not all Dmax pistons are the same. LB7 and LLY were made by Mahle OEM, they were 17.5:1 compression ratio. LBZ and newer are different and have a compression Ratio of 16.8:1. Wrist pins are different between them as well. There were small running changes during different production years of all...

As I recall your not going to be able to replace all the bolts with studs with the heads in place. I think it's 2 bolts on each side that will not come out all the way unless the head is removed or you lift the body. With that in mind I would not want to have a mix of bolts and studs. If your...

How about thinking about it just a little different. Compression ratio is the total volume of the cylinder, head gasket, and head at bottom dead center versus the same at top dead center. Anything you do to change that relationship changes the compression ratio. So shortening the rod increases...