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Intake, sorry and thanks.

Am I supposed to be pulling any vacuum at idle? My gauge reads a nice fat zero with minimal movement with small accelerator input (not including boost).

I don't know about a prolonged period of time but I drive around with my IP maxed out for a couple days. Unbelievably loud on a cold start and set a 36 DTC but real fast to start.

Oh yeah, forgot about that. They are six lug but the Colorado/Canyon bolt pattern. Idk if it's the same pattern as FS trucks or not.

They're not H2s but how about it's little brother the H3?

Cut down the outside diameter?

Sorry to hijack but I just have to ask; Gerald how did you fit your stock center caps? I shaved down the bottom of one of mine and cut small "compression reliefs" and still cannot fit the caps.

I don't think that would pose too much of a problem. I still rub but not under..."everyday" conditions. Monster speed bumps and things of the sort still make contact and it's really bad sounding, but for everyday it's fine although still way to close for me to be comfortable with it.

With a #9 resistor mine is around 15 psi (don't know for sure as gauge maxes out at 15) at 3/4 to full throttle. Cruising at 70 yields about 4 psi.

If anyone was actually curious: problem fixed; WAY out of base timing. Using the mark I was told to use on the IP, base was about 15* advanced....maxed out on the IP. Reset to 10* and the light is out. Not quite as peppy and a little harder to start in the morning with more white smoke but at...

Base timing is as far as TDCO/other Idk it's at one of my customers' shop now. The PMD was just a random thought/question.

Does the PMD have any control over the stepper motor?

*sigh* Guess I'll have to pull the torque wrench out again. Thanks guys/ma'am

I'm guessing I'll need ScanTech/Tech2 for that? Edit: Is it ok to drive in the mean time?

Suburban is back together and driving. Drives good. 11psi at about 3/4 throttle, maybe less and EGTs never got above 400 cruising @ 50mph. Excellent. Only one problem; I still have that code 34. I replaced the "new" stepper motor with the old one off my core IP and still the same results...

.....I have the ones at the valve covers. In my absent mindedness I forgot to put the ones on the intake when I put the intake back on the truck. As far as I can tell nothing is touching/rubbing anything.

How imperative are these things? With the lines tightened on the injectors and the injection pump they seem stiff enough not to really need these?

Update: Problem found! Injector line on cylinder 6 was loose. Still have the stepper motor problem though. Hopefully using my old one will not void the warranty.

First place I checked, all good there.

10-4, still no joy. I have also found out that I have a rather massive fuel leak which may be the problem with misfire. I guess I'll know tomorrow after I pull the intake back off and check all the injector lines and return lines for leaks. I was really hoping to spend the last day of my...