GTP38R Installed
 

I installed the 38r today, I have to say that it does whistle a lot louder, but not what I was expecting on the performance side. I expected a little change in noticeable power, but not so much. Not sure if my expectations were to high or perhaps I need to wait til I get the TS Tuner installed. The TS should be here tomorrow or Monday, right now I have the SuperChip tuner running and figured I would have been able to notice more. Hmmmm, just not sure.:nope::argh:

boost
 

what kind of boost psi are you getting

Need more fuel to make more power, the stock turbo is well suited for the stock injectors.

Lower EGT's?

I'm boosting the same as the stock turbo, right at 20 psi. Thought the boys at Alligator Performance told me it should boost into the mid 30's, but I don't think there was any clarification of whether that was with stock injectors or the 160's I plan on getting. I do like the way the 38r whistles.

I am selling my Honda FatCat to pay for the injectors and probably have pay someone to pull the stockers then re-install the new ones. After doing the 38r install, not sure I want to attempt R&R the injectors myself. I would love to help someone, but no shops around here will allow me help out and get in the way.

You should be making more then 20psi... How did your up pipes look, any leaks?

Did you install the O ring at the X pipe (on the outlet of the turbo)?

I intalled the o rings on the base where the turbo sits...the pipes all looked good...I am looking at the install sheet, and there isn't anything that says anything about an O ring at the X pipe...Now I am worried!

See the grove on the compressor outlet on this turbo, there should be an O ring there, about 2" round...

http://inlinethumb12.webshots.com/44...600x600Q85.jpg

If its not there, there is your EGT and boost issue.

I did not install the O ring into turbo outlet...CSI, you are wise beyond your years...I just went into the garage and looked at the stock turbo and there was the O ring...and I overlooked the picture and warning on the install sheet about reusing the "the original discharge O ring"...Now I know I am not fit to be working on my truck...:argh:

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I don't know what I would do without this website...a million thank you's!!!!:c:

Not a problem... A little RVT on that gasket helps hold it in place if its miss shaped at all.

Also, if you think about it, adjust the wastegate on the 38R, they love to leave them loose from the factory. I try and get two full turns on them.

I got the O ring installed and then ran the truck, I got 21-22 psi, that is better but I'm not sure if it should be more.

Not sure how to adjust the waste gate, I will try and look at it tomorrow...any helpful pictures to show the adjustment?

I dont think I have any pictures of the wastegate... It just needs to be shortened. There is a jam nut at the end of the rod, loosen it and then shorten the rod.

Two ways to do this, you can remove the rod from the wastegate itself, and then its hard to hook back up... Or you can use a pair of small vice grips to grab the rod and turn it (kinda getto, but much easier)

What's the deal with info I've read on other sites about people disconnecting the red vacuum tube from the actuator to increase boost and spool up quicker? Is that a safe thing to do?

You can do that, but if the wastegate is loose to begin with it will not help. Need to get it tightened and then go from there.

I used to run one of these when I was running a 38R... Very easy to adjust!

http://www.dieselsite.com/index.asp?...ROD&ProdID=875

A 1/2" drive and an extention and you can adjust your wastegate in seconds!

Is it bad to disconnect the vacuum actuator?

not really... If your building too much back pressure it should open anyway, but if the wastegate is too loose, unplugging it will do nothing.

I got the wastegate tightened up, I cleaned my air filter and put in a new fuel filter and now the turbo is boosting up to 25-26 psi at WOT. Amazing, I should be more diligent about cleaning the filters!

Is that more like what it should be with stock injectors?

Sounds about right for 3000' or so elevation.

So I assume the pressure will go down the higher the elevation since the air gets thinner...I live at 2200 and some change, so if 25-26 psi @ 3000 ft is a rough gauge, should it be more than that?

What kind of boost would it roughly produce with 160 cc single shots?

Also, I thoroughly checked all the hoses and fittings, and to the best of my abilities I cannot find any leaks...Might I have some injector problems?

im no diesel expert (actually far from it, but i am learning) but if you are supposed to be making a lot more boost then you are then it has to be leaking somewhere. i wish i could remember where i read asbout testing the up pipe connectors and such with a water/soap solution... something if you spray the couplings and see bubbles you found your leak..

thats about right with just a superchip as your tuning, wait for your 6 pos. to get there then let know what it does

I got the 6 position chip today, Question: What do I do with the opening into the computer where the chip cable runs back out..? It seems that a lot dirt and dust can get in there, any ideas?

Most people just tape the chip in place thereby covering the hole and keeping dust and stuff out... It also ensures that the chip won't rattle out or anything.

Ok, I had thought that might be the scenario, but I tend to get way to redneck with the duct tape...Thank you!

i left mine and haven't had issues, then again my truck is a road queen, no dirt roads for it

Ok, well installed the TS chip in today and I put the truck through some paces...here's what I found...I was boosting about 25-26 psi, now it's back down to 20 psi, the egt's are through the roof and my check engine light comes on and stays on.

Now I'm puzzled as to what the truck should be doing, when I got home I popped the hood to quick glance at the motor and I noticed the Turbo was blue!

Can someone give me some insight to what might be happening if anything?...I am just nervous about screwing something up.

By the way, TS chip has no custom tunes on it just straight from Advanced Diesel...I was going to wait to get custom tunes when I get the injectors re-done by Rosewood.

Something isnt seated right, whether it is your intake Y or the turbo to the Uppipe Collector. You will need to double check everything

Is that going to be reason for the check engine light and the elevated egt's as well?

okay if that oring is missing or screwed up what will it do to your EGTs and boost??

it will cause low boost and high EGTs

I tore into the truck...Again! The O ring on the Turbo outlet is okay and seated, the O rings where the Turbo mounts are fine and seated...all the V rings clamps are tight and sealed...

When I put switch to the 140 extreme hp on the TS Chip I cannot get up past 20 psi of boost and the egt's climb so fast the gauge moves like the speedometer...

When I switch to the 100 hp on the Chip, I can get damn near 30 psi of boost and the egt's don't climb near as fast...

And is the Turbo supposed to turn blue?

is the turbine housing turning blue? how are the intercooler boots and pipes?

The Turbine housing is still the silver metal color, the outlet side of the turbo that goes into the downpipe is blue-ish...looks like it got really hot.

I have a infrared temp gun and I checked the temp of the intercooler tubes and they were not much over 100 degrees...and when I check the exhaust part of the turbo it wasn't that hot either 200-240...the truck was not running, but check after running down the road.

do you have guages in the pickup? sounds like you have a boost leak some where.

Yeah I have gauges...Are they notorious for leaking?

where is your pyro hooked up and how hot is it getting?

The Pyro is connected directly into the downtube, when the the TS chip is on 140 extreme it climbs up to 1000 degrees...extremely fast

there is one of your problems, you need it in the manifold. if your seeing 1000 in the down pipe you could be seeing 1300+ in the manifold.

well isn't 1300+ still to high?

When I had the exhaust installed, the shop installed the fitting for the pyro, I assumed they put it in the right spot.

there is nothing behind the turbo that needs monitering. it needs to be in the manifold. you have a boost leak somewhere. you need someway to check everything

Ok, thank you for the info...I will try and find someway to check for leaks...

When I used to live in Portland, there was a place in SE Portland to Mtn Bike called Powell Butte, Do you live at the same place?