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d66 Diagnostic help

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Old Aug 1, 2008 | 06:35 PM
  #1  
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d66 Diagnostic help

I just finished a d66 and 17 degre hpop from terminator install.

Im only boosting 15lbs max, wound out at 3k rpm.

I have lots of fuel, and the dp tuner is working properly. Jody hasnt re tuned it for the new pump or turbo.

Setup is DIY stage ones, 3.5" dp to straight, DP tuner, 6637 intake, d66 turbo, 99 intercooler.

Boots seem tight, Im at a loss as to what might be going on.

Any help would be greatly appreciated.

Thanks
 
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Old Aug 1, 2008 | 08:03 PM
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Originally Posted by bnine
I just finished a d66 and 17 degre hpop from terminator install.

Im only boosting 15lbs max, wound out at 3k rpm.

I have lots of fuel, and the dp tuner is working properly. Jody hasnt re tuned it for the new pump or turbo.

Setup is DIY stage ones, 3.5" dp to straight, DP tuner, 6637 intake, d66 turbo, 99 intercooler.

Boots seem tight, Im at a loss as to what might be going on.

Any help would be greatly appreciated.

Thanks
so if read correctly, you were making more boost before the turbo and pump install?

if so, seems to me you might have a boost leak? up-pipes, donuts?
whats your hpop pressure? can you pull codes?
15psi, to me, at 3k rpm is like stockish numbers at wot...
did you get the IPR and associated wires, brass nut, etc installed correctly?wierd problem, would like to know the fix myself...
 
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Old Aug 2, 2008 | 02:47 PM
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check all your hoses, and up pipe gaskets. I have the D66 with Stage 2's and TW tunes and I can hit 35-40.
 
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Old Aug 4, 2008 | 02:14 AM
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Thanks for the feedback guys.

So far the boots are good. I am going to check the up pipes, and scan for codes next.
 
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Old Aug 4, 2008 | 03:11 AM
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Did you put the map line back on?
 
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Old Aug 4, 2008 | 05:03 AM
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Originally Posted by RubberDuck
Did you put the map line back on?
X2... Sounds like the map is not not hooked up making it go into the default setting.

If you have a boost leak your egt's would be crazy high in those high settings with all that fuel.
 
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Old Aug 4, 2008 | 11:32 AM
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I'll check the map.

The egts are retarted. I cant get half way through a gear at more then half throttle without hitting 1200 on the higher settings. Im even getting smoke on my 8k tow, but temps are manageable at least.
 
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Old Aug 4, 2008 | 11:53 AM
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Ya, I'm running stock and can inch above 15psi. i would think you could hit 28-30...
 
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Old Aug 4, 2008 | 04:54 PM
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There is definitely something wrong. The map could be in wrong place, but its going to give you those high of egts. I'd start looking for boost leaks. Are you running an intercooler?
 
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Old Aug 5, 2008 | 12:39 AM
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Im am running an IC. 99 with all banks pipes. So far I've been through all the IC pipes, and spider connections. Those have check out good.

I took a surface look and shake on the up pipes, and those seem good as well.

Map is all hooked up.

I pulled codes, and truckload.

1 cam position sensor (bank 1) code.

2 ICP codes

2 EBPV codes.

Im going to do some errands with the truck tomorrow with the stock programing and pull codes again.

I'll post back with exact codes and descriptions after I elimate the tuner tomorrow.

It does seem like I can hear a wheez. I suspected it was a connection, so of course I checked there first. Maybe instead my epbv is sticking or something along those lines? That would choke it out wouldnt it?

Thanks agian for the help guys. I leave for a 700 mile trip in two days, pulling 16,000lb. This is killing me....lol
 
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Old Aug 5, 2008 | 02:32 AM
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Now we're talking. That would definatly send the egt's through the roof, and make poor power and boost.

Maybe clean the EBP sensor line off the passenger head to the sensor.
 
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Old Aug 5, 2008 | 11:55 AM
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I'm looking, but can't seem to find it. The passenger head?
 
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Old Aug 5, 2008 | 06:07 PM
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The line comes off the front (twards the radiator) of the passenger side exhaust manifold and runs up to the top of the HPOP res. It should be hanging on the back side of the res. Or I think the 97's mount on the HPOP gear bolt access plate behind the water pump pulley. It's a hard line that sometimes gets plugged with soot.
 
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Old Aug 6, 2008 | 01:21 AM
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Thanks Duck.

Mines a 95 so, should be in the described spot. I'll check it out.
 
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Old Aug 7, 2008 | 05:33 AM
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Originally Posted by RubberDuck
It's a hard line that sometimes gets plugged with soot.
Nice call. It was plugged pretty much solid. Should be up and running tomorrow just in time for the big trip.

Thanks again. That was a huge help.
 
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