OK, so I have the L26 UIM, and I am trying to figure out what else I need to do to make this work. I am essentially just swapping the L26 UIM/LIM/HV3 onto my L32 and taking off the blocked m90 case.

I noticed the brake booster hooks up differently, which is simple. Second thing, I see the PCV valve sits on the passenger side of the car. It also appears that a sensor sits on top of it, assuming MAP?

Now, being that my car has a bracket behind the M90 case holding my MAP / BARO sensors, how do I make this work on the newer setup?

Also, is it possible to keep PCV functional with a turbo setup? I see people making catch cans and what not, but I am not sure why I understand this is being done, since I don't really have any oil coming out of the valve cover breather.

If I can't keep PCV, what is the best way to remove it from this intake, and still keep a vaccuum source so I can hookup the wastegate, BOV, sensors, etc.

Thanks! I thought there was a vaccuum tree somewhere on the intake like the supercharged setup... WRONG.

_________________
T66 Turbo,3" downpipes, oversized A2A,Stg3 heads/cam,hv3,built trans,bilstein struts,ssc springs,gxp brakes,pace car spoiler(1of3??),lots more.. dyno'd @ 421WHP~13lbs boost on OLD setup. New = ???

There's a tab on the front side of the intake snout you *could* use for a mounting bracket for MAP/Baro sensors.
Put a tee in the line for the brake booster for a vacuum/boost signal.
You're correct about the MAP sensor on top of the PCV - I'm guessing you won't be using it for your new setup though.
Why disable the PCV?

_________________
2005 GT owner [Non S/C] with a "big DIC".
Two years later and I still love the car.
Thanks Pontiac...Bleen is keen!

I would keep PCV functional, but it apparently won't work under boost, causing too much oil to be thrown around and making a mess/burning oil. I don't want to make a catch can setup and what not, so the valve cover breather will need to be used.

I was reading I can leave the PCV in there w/o touching it, as long as I have the valve cover breather on too. Saves modifying for nothing...

_________________
T66 Turbo,3" downpipes, oversized A2A,Stg3 heads/cam,hv3,built trans,bilstein struts,ssc springs,gxp brakes,pace car spoiler(1of3??),lots more.. dyno'd @ 421WHP~13lbs boost on OLD setup. New = ???

Sounds about right.
The PCV acts as a check valve [gets forced shut under "boost" conditions].
That leaves the valve cover breather as the only escape for built up crank case pressure [blowby past the rings] to get out of.
Some of the G/N guys were playing around with the Caddy electric crankcase pump.
Seems to work.

_________________
2005 GT owner [Non S/C] with a "big DIC".
Two years later and I still love the car.
Thanks Pontiac...Bleen is keen!

Interesting! I think I'm going to keep the MAP sensor on the case as it was from stock and just tap two 1/4" barbed hose fittings in the rear of the case to do the vaccuum/keep it clean. I think that's all I'll need to do...

_________________
T66 Turbo,3" downpipes, oversized A2A,Stg3 heads/cam,hv3,built trans,bilstein struts,ssc springs,gxp brakes,pace car spoiler(1of3??),lots more.. dyno'd @ 421WHP~13lbs boost on OLD setup. New = ???

Easy there.
Stop and think.
When your car was stock and you left the oil filler cap off,did the car complain?
You were introducing unmetered air into the engine.
Correct?
Putting an open element breather on a valve cover would have the same effect.
No?
I seem to remember that you had problems with the E Test after you went turbo.
The extra air coming into the crank case breather might cause you even more headaches with your cal's.
IIRC,the L26 upper uses a bypass tube at the throttle body to send air to the crankcase .... the peg sticking up after the throttle body mating face on top [you'll see it].
You might want to try tapping it on the bottom [mating face] for a pipe plug.
Screw a brass plug in from Home Depot nice and tight with Loctite to retain it and you should be good to go.
If you're really paranoid,you could stake the plug in with a punch.
This would all be reversible later if it didn't work.

_________________
2005 GT owner [Non S/C] with a "big DIC".
Two years later and I still love the car.
Thanks Pontiac...Bleen is keen!

I am not hooking up the tube that goes to the throttle body bellows, it will be capped. From what I've read from ZZP turbo kit purchasers, they leave the PCV exactly as is and just cap that output and remove the hose after the MAF.

Vic says he tried removing the valve and keeping it in, and the car responded exactly the same. My problem with emissions is fuel... It's literally dumping too much in, so my tune is out to lunch. NOX is almost non-existant, so that concludes the combustion chamber is cool. There's just too much unburned fuel passing out the tailpipe... I am going to a Delco spark plug (getting rid of these NGK TR6s) that is also two stages colder, will gap at 0.035 and see what happens. Once the UIM and plugs are in, I should be able to smell the difference within a few minutes if it's affected anything.

I never knew if I had a vacuum leak or not with my M90 case, due to the way it seals from being gutted. ZZPs gaskets are no good and don't seal.. Also doesn't help they sent me the wrong one and told me to modify to make it work instead of resolving the problem (thanks Zoomer, another A+ for customer service *** sarcasm ***)

If you have any better ideas how to set this PCV up, please share. I haven't tapped the case or started install yet, making sure I have everything lined up first. I have no ambition to make a catch can and have to empty that thing out on occasion, or keep an eye on it.

_________________
T66 Turbo,3" downpipes, oversized A2A,Stg3 heads/cam,hv3,built trans,bilstein struts,ssc springs,gxp brakes,pace car spoiler(1of3??),lots more.. dyno'd @ 421WHP~13lbs boost on OLD setup. New = ???

I just thought of something.
Be careful using those valve cover air breathers.
They LOVE to pass out $400 tickets for those.
Ask the GN guys.
The stupid part was that T-Netics CARB certified those for use on the GN's.
Ontario doesn't care.
NGK makes a beautiful turbo plug.
It just sounds like you went too cold.
Get the equivalent of a Delco 43' [ I think it was an NGK UR5 ].

_________________
2005 GT owner [Non S/C] with a "big DIC".
Two years later and I still love the car.
Thanks Pontiac...Bleen is keen!

I purchased Delco R42LTS, which is the equivalent of what was used in the Grand Nationals and the older 3.1 Tubo GPs. I have been reading about plugs, these seem to be a good option, the price was excellent as well. There's another member running a similar turbo kit and he recommended as well...

I don't see how a two stage colder plug would be too cold.. People drop one stage for a 3.4" pulley, and two on a 3.2" or smaller. I should be where I need to be..

_________________
T66 Turbo,3" downpipes, oversized A2A,Stg3 heads/cam,hv3,built trans,bilstein struts,ssc springs,gxp brakes,pace car spoiler(1of3??),lots more.. dyno'd @ 421WHP~13lbs boost on OLD setup. New = ???

R44TS is stock on a GN.
R43TS or the equivalent is what most guys run in a GN on the street/pump gas.
I would run one range colder than whatever the stock S/C'd 3800's run and tighten the gap .005".
I tried a 42' Delco in the GN years ago and it pigged gas as well as lousy warm up.

_________________
2005 GT owner [Non S/C] with a "big DIC".
Two years later and I still love the car.
Thanks Pontiac...Bleen is keen!

Well, I am just starting to tear into the project this evening.. Did what I could with the engine being very hot. I'll pull the LIM out tomorrow, injectors/rails and EGR intake tube. I'll try the plugs I picked up, they were cheap. I already gapped them so I can't really return them at this point...

So, at this stage, I am going to use the old brake booster tee and use that for vacuum as you mentioned. I hope it arrives soon..

Now, back to the MAP sensor. AFAIK, my Series 3 S/C came with a 2-bar sensor, the Series 3 N/A came with a 1-bar. I am under the impression I should be using the 2-bar on the car, correct? I am trying to get the orange rubber plug off the N/A sensor, but it seems like it won't remove without destroying it.

Need to figure out how I am going to seal that without using RTV or something hard to cleanup. Don't think an o-ring will sit there either.. BLAH
Found out today I could get rid of the valve cover breather and just keep the metal tube open at the top of the case (or run a hose from it and dump it somewhere hidden in the engine bay). Will have to see what I decide to do as I keep going..

*** EDITED ***

As dumb luck would have it, I found this wonderful picture which includes a part number. This thing is gonna cost like ~$10, can't believe it!
http://www.sallee-chevrolet.com/Gen_3/i ... 194007.jpg

_________________
T66 Turbo,3" downpipes, oversized A2A,Stg3 heads/cam,hv3,built trans,bilstein struts,ssc springs,gxp brakes,pace car spoiler(1of3??),lots more.. dyno'd @ 421WHP~13lbs boost on OLD setup. New = ???

Eeyup,you'll need the 2 bar sensor.
That grommet should be available from the dealer.

_________________
2005 GT owner [Non S/C] with a "big DIC".
Two years later and I still love the car.
Thanks Pontiac...Bleen is keen!