2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

how does duall pass work?

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Old Sep 3, 2010 | 12:53 AM
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how does duall pass work?

I'm looking into buying dual pass cause im going zzp stage three soon, how does it work tho? what do i add and stuff?
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Old Sep 3, 2010 | 01:09 AM
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Search and read, lots of threads on this.
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Old Sep 3, 2010 | 01:12 AM
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This should help:

https://www.cobaltss.net/forums/2-0l...s-work-210428/
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Old Sep 3, 2010 | 01:13 AM
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No way, they both messed up the spelling the same way
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Old Sep 3, 2010 | 01:16 AM
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From: vegas
Originally Posted by ItalianJoe1
No way, they both messed up the spelling the same way
lol i know how to spell it i guess i overpressed the l button lol
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Old Sep 3, 2010 | 01:21 AM
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you should have added "a" to the title for extra points

That thread should get you on the right track.
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Old Sep 3, 2010 | 01:25 AM
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Originally Posted by Pyros777
yea thankx for the thread, i read it.
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Old Sep 3, 2010 | 01:38 AM
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humm I like the colored diagrams wish I could find one for opt. B anyone know of one? sorry not trying thread jack...
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Old Sep 3, 2010 | 01:53 AM
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The option B diagram is also in that thread.

Heres a link directly to it:

https://www.cobaltss.net/forums/4819425-post15.html
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Old Sep 3, 2010 | 02:01 AM
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Originally Posted by Pyros777
The option B diagram is also in that thread.

Heres a link directly to it:

https://www.cobaltss.net/forums/4819425-post15.html
Yeah I am sorry I ment without the duel pass I just have opt. b. setup on my car and was wondering how the plumping looked without the duel pass... sorry but thanks lol.
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Old Sep 3, 2010 | 02:07 AM
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ahhhh. hmm, well the main 3/4" hose off the option B tank could T off into the hose to the right of the stock fill cap. (youd end up with two fill caps, but thats actually kinda cool )



I'd cut a very small hose segment, put it on the fill neck's right-hand outlet, then attach a T between it and the purple hose. The small hose segment would basically just join the fill-neck's outlet and the T-fitting.

I think you could optionally cut the purple hose below the 90* bend and T into that.

Last edited by Pyros777; Sep 3, 2010 at 02:15 AM.
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Old Sep 3, 2010 | 02:24 AM
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Originally Posted by Pyros777
ahhhh. hmm, well the main 3/4" hose off the option B tank could T off into the hose to the right of the stock fill cap. (youd end up with two fill caps, but thats actually kinda cool )



I'd cut a very small hose segment, put it on the fill neck's right-hand outlet, then attach a T between it and the purple hose. The small hose segment would basically just join the fill-neck's outlet and the T-fitting.

I think you could optionally cut the purple hose below the 90* bend and T into that.
humm ok well the "In" coming from the pump is running to my "out" of my ottp h/e... its just the hose's running out with the dual pass, and opt. b setup look to be way different with the way I have them ran without dualpass... im just confusing myself, only reason why I am bringing it up is it just seems when my car is running and gets to high temps for fans to kick on, around about 200-220* it still does not fill like it has flow... I dunno just wanna see a diagram on it to make a comparisson of mine, and determine whether the .040" orifice is pressed into the brass fitting or can it be pressed into the 1/4" line because it still fits tight within the line so I figure the purpose would still be the same seeings that the little hole in the orifice makes it harder for the coolant to go threw and allows more air then anything... I dunno just a bit confused lol...
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Old Sep 3, 2010 | 02:31 AM
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Well, just in case you didn't know, the engine's coolant system is completely separate from the supercharger's. The DIC doesn't have a provision for viewing the supercharger system's temps either.

If you're seeing 200-220* on the Driver Information Center, then even the most efficient supercharger cooling setup will not lower those temps.

Heck, even the most efficient supercharger setup wont lower the stock system's temps. What it WILL do is slow down the time it takes to heatsoak, and speed up the time it takes to cool back down.

Anyway, 200-220* in the crazy weather you've been seeing in Ohio sounds about right. Thats what I hit when I'm in rush hour traffic.
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Old Sep 3, 2010 | 02:36 AM
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Originally Posted by Pyros777
Well, just in case you didn't know, the engine's coolant system is completely separate from the supercharger's. The DIC doesn't have a provision for viewing the supercharger system's temps either.

If you're seeing 200-220* on the Driver Information Center, then even the most efficient supercharger cooling setup will not lower those temps.

Heck, even the most efficient supercharger setup wont lower the stock system's temps. What it WILL do is slow down the time it takes to heatsoak, and speed up the time it takes to cool back down.

Anyway, 200-220* in the crazy weather you've been seeing in Ohio sounds about right. Thats what I hit when I'm in rush hour traffic.
True I keep forgetting that lol but once driving it drops to 180-190ish, but still you feel pressure in the lines right, theres something that just aint right and I cant figure out what lol, I am almost sure its a simple fix to... thanks for the help too.
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Old Sep 3, 2010 | 02:51 AM
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If you don't feel any pressure or pulsating in the lines, and there is no coolant movement when you look down the neck of the fill cap, you may need to install a new coolant pump.

This could definitely be the case, especially considering you have an 06. The pumps on these cars usually last about ~2 years depending on how often you drive the car.
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Old Sep 3, 2010 | 03:01 AM
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Originally Posted by Pyros777
If you don't feel any pressure or pulsating in the lines, and there is no coolant movement when you look down the neck of the fill cap, you may need to install a new coolant pump.

This could definitely be the case, especially considering you have an 06. The pumps on these cars usually last about ~2 years depending on how often you drive the car.
humm... really lol? well cant be sure if it even worked before but I am sure it did... ummm ima check that out but I am gonna see if I can find some pics on the hose routing... Also I dont have a fill neck any more opt. B. T necks replaced that... so I cant see if it is or not just by feeling the lines it feels like no pressure lol...
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Old Sep 3, 2010 | 11:39 AM
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If you wanna do option B tank without the dual-pass, you still T it in where the stock filler goes. Gains from option B by itself will be minimal at best.

To lower your driving temps, get a tune that brings your fans on earlier. Stock programming doesn't turn them on until 224 degrees. If you bring them on at 195, car never goes over 200. T-stat is 185 though, so you can't get it cooler than that and you don't need to.

If you have 50,000+ miles on the stock IC pump, it's dead. I replaced mine twice in 60K miles.
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Old Sep 3, 2010 | 01:27 PM
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The best way to keep the car cool in stop and go driving is to have the a/c on. The condenser, which is in front of the intercooler, gets pretty cold and the fans also help to draw that cool air over the intercooler.

Dual pass only works well when you're moving and your temps rise at WOT. If your IAT's aren't bad then it's really not worth buying.

When I'm driving on a 95 degree day, my IAT2's are ~110 tops, and that's with coolant in the I/C and not water. It's when I'm sitting in traffic they decide to climb up to 150 and beyond. Then you pull away from a light and the car is slow as ****. Not good, lol.

Yo quiero turbocharger.
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Old Sep 3, 2010 | 05:15 PM
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Originally Posted by ItalianJoe1
If you wanna do option B tank without the dual-pass, you still T it in where the stock filler goes. Gains from option B by itself will be minimal at best.

To lower your driving temps, get a tune that brings your fans on earlier. Stock programming doesn't turn them on until 224 degrees. If you bring them on at 195, car never goes over 200. T-stat is 185 though, so you can't get it cooler than that and you don't need to.

If you have 50,000+ miles on the stock IC pump, it's dead. I replaced mine twice in 60K miles.
humm ok, so gotta buy aeroforce, andhp tuners and learn to do that **** myself it would be more easier seeings how Wicked is an hour away and its hard to plan around each others schedule.. As far as the pump lol damn they really go dead that damn quick..? Wow guess I'll be getting one of those as well.. thanks for the help.
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Old Sep 3, 2010 | 05:16 PM
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Originally Posted by chris88z24
The best way to keep the car cool in stop and go driving is to have the a/c on. The condenser, which is in front of the intercooler, gets pretty cold and the fans also help to draw that cool air over the intercooler.

Dual pass only works well when you're moving and your temps rise at WOT. If your IAT's aren't bad then it's really not worth buying.

When I'm driving on a 95 degree day, my IAT2's are ~110 tops, and that's with coolant in the I/C and not water. It's when I'm sitting in traffic they decide to climb up to 150 and beyond. Then you pull away from a light and the car is slow as ****. Not good, lol.

Yo quiero turbocharger.
ok I'll give thise a try as well accept I cant see my iat temps because I have no gauge to do so... I'll try to get one asap, thanks for the help.
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Old Sep 3, 2010 | 05:29 PM
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Originally Posted by chris88z24
The best way to keep the car cool in stop and go driving is to have the a/c on. The condenser, which is in front of the intercooler, gets pretty cold and the fans also help to draw that cool air over the intercooler.

Dual pass only works well when you're moving and your temps rise at WOT. If your IAT's aren't bad then it's really not worth buying.

When I'm driving on a 95 degree day, my IAT2's are ~110 tops, and that's with coolant in the I/C and not water. It's when I'm sitting in traffic they decide to climb up to 150 and beyond. Then you pull away from a light and the car is slow as ****. Not good, lol.

Yo quiero turbocharger.
The condensor is like a radiator, it gets hot, not cold. The fans come on whenever the a/c is on though, this is why you see a drop in coolant temps. You will actually be pulling warm air from the condenser through the intercooler system H/E though.

Dual-pass works better than any other single cooling system mod you can do. It actually keeps the coolant in the manifold cooler. H/E's are a waste IMO, along with bigger surge tanks and **** (I ran both on my car, just saying), but the endplate makes a difference.

Part throttle driving with no boost, your IAT2's only rise over ambient due to latent heat in the blower and intake manifold. As soon as you hit boost they will climb though.
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Old Sep 3, 2010 | 05:31 PM
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Originally Posted by MrSlickSter06SS
humm ok, so gotta buy aeroforce, andhp tuners and learn to do that **** myself it would be more easier seeings how Wicked is an hour away and its hard to plan around each others schedule.. As far as the pump lol damn they really go dead that damn quick..? Wow guess I'll be getting one of those as well.. thanks for the help.
HPT is up to you, if there's nobody local then yeah, best bet is buy it yourself. Don't need an Interceptor if you have HPT, you can log all the info or use it as a real-time readout on the laptop while driving.

The pumps are cheap, under $100 brand new. Change it. The brushes are super soft and wear out quickly. Every one i've taken apart has had the same failure, brushes were just totally worn away.
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Old Sep 3, 2010 | 08:53 PM
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Originally Posted by ItalianJoe1
The condensor is like a radiator, it gets hot, not cold. The fans come on whenever the a/c is on though, this is why you see a drop in coolant temps. You will actually be pulling warm air from the condenser through the intercooler system H/E though.

Dual-pass works better than any other single cooling system mod you can do. It actually keeps the coolant in the manifold cooler. H/E's are a waste IMO, along with bigger surge tanks and **** (I ran both on my car, just saying), but the endplate makes a difference.

Part throttle driving with no boost, your IAT2's only rise over ambient due to latent heat in the blower and intake manifold. As soon as you hit boost they will climb though.
That's weird, mine is cool to the touch if I feel it after I had been running the a/c.

JUNK.
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Old Sep 4, 2010 | 09:27 AM
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Originally Posted by ItalianJoe1
HPT is up to you, if there's nobody local then yeah, best bet is buy it yourself. Don't need an Interceptor if you have HPT, you can log all the info or use it as a real-time readout on the laptop while driving.

The pumps are cheap, under $100 brand new. Change it. The brushes are super soft and wear out quickly. Every one i've taken apart has had the same failure, brushes were just totally worn away.
ok good deal thanks dude, and yeah I have wicked but I need it for myself, one, so I can learn, and two I cant always have him around you know, especially with him being an hour away from me... so yeah if I can just get hpt and do all this myself without having a aeroforce then ima go that route.. did you get pump at local store..? like auto zone or something?
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Old Sep 4, 2010 | 10:16 AM
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get a zzp single pass they are alot better then a dual pass
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