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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Old 08-27-2008, 03:43 PM   #1
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Gt28 or TD04 18t

im not sure which way i should go to get my car ro the last stage it will see. 300 to the wheels

im getting the ecu done by jak so the only thing thats in question it the turbo. im getting injectors no matter what turbo i get, but its the amount of custon work that will be needed for the gt that is making me lean for the td04.

who has a gt in there car with some pictures of it? ( i did search but there was nothing that helped me)
is there a way to get a gt with the same 3 bolt exhaust side? so i do not need a custon dp made.

as fro price, a rebuilt td04 18t with a 6cm is $850 and a gt28 is around $1100 so im not sure how to go about it.

any info of your set ups will be great.

im not going to maxing out the turbo, im going for 300whp and im done, i was told by jak the the 18t would be good for 320-340 and the gt would get me up to 350-370 but if all im going for is 300 it should really matter other than spool time.
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Old 08-27-2008, 03:59 PM   #2
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I like the 18t better. They are rebuildable, and there is ultimately less custom fab and work to get one installed.
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Old 08-27-2008, 04:14 PM   #3
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I like the 18t better. They are rebuildable, and there is ultimately less custom fab and work to get one installed.
i have a 15t now so all i would have to do is swap it and thats why i like the idea of it over the gt, but the gt will work alot less to get the 300hp. i do not want super high egt.

what about getting the 6cm made bigger to say 7 or 8 and using a 19t? has any one done that?
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Old 08-27-2008, 04:19 PM   #4
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Some people have... You could always do 19t in the 6cm2.
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Old 08-27-2008, 04:21 PM   #5
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I heard form a little birdy that if u want 300whp just go with GT28.
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Old 08-27-2008, 04:33 PM   #6
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Get the gt.
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Old 08-27-2008, 05:05 PM   #7
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Look at it this parts and the GT cost X of amount of dollars.
parts and 18t cost X amount of dollars
not having to worry how high egt priceless


P.S. basically don't u just need some different lines for the GT and some more/different IC plumbing total cost difference $500 and if u ever want more HP all u got to do is retune
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Old 08-27-2008, 06:18 PM   #8
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"as fro price, a rebuilt td04 18t with a 6cm is $850 and a gt28 is around $1100 so im not sure how to go about it."

where did you get the quote for the 18t from? cause i think gpopshop builds 15t's to 18/19t for like 350-400
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Old 08-27-2008, 08:36 PM   #9
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Chadwick on here will upgrade it for 270, or rebuilt and upgraded for 620. That's probably the lowest I've seen it...
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Old 08-28-2008, 04:42 AM   #10
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"as fro price, a rebuilt td04 18t with a 6cm is $850 and a gt28 is around $1100 so im not sure how to go about it."

where did you get the quote for the 18t from? cause i think gpopshop builds 15t's to 18/19t for like 350-400
But do you have to provide the 6cm because that's where it can add up?
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Old 08-28-2008, 04:54 AM   #11
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But do you have to provide the 6cm because that's where it can add up?
Agreed.

But, he should be able to skate out the door for under $700 for all parts and labor out the door.

I would go w/ lower EGT's and less work to get there any day of the week. Do GT28.
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Old 08-28-2008, 08:18 AM   #12
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well when i shopped for the turbo i didnt go to the cheapest, i went with someone who has a years of feed back.

ok so for a 19t it would be $850 and im done
a gt, $1100 for the turbo, ill need the exhaust addapter plate and have it welded on, $150, new lines $50, WG $100, and intake pipe, ect... $150.
so $1500.

who here has a 18t or 19t?


does anyone have pictures of their gt set ups?
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Old 08-28-2008, 08:42 AM   #13
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I have Jak's Big T28 if that's what you are asking ( 28 wheels on both sides) on my 9-5 I was able to use my JT DP from my GT17 without any changes. Jak had to clock the Exhaust housing a bit. Not sure about the differences on the 9-3.

It is a good turbo for the 2.0 but I think on my 2.3 it runs out of puff a bit ( and so does Jak.

If I had to do it all over again I would ahve gotten the TD04 18 or 19. But that's because its on my 2.3, on the 2.0 I think it is perefect....
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Old 08-28-2008, 09:17 AM   #14
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Quote:
Originally Posted by jonny72888 View Post
well when i shopped for the turbo i didnt go to the cheapest, i went with someone who has a years of feed back.

ok so for a 19t it would be $850 and im done
a gt, $1100 for the turbo, ill need the exhaust addapter plate and have it welded on, $150, new lines $50, WG $100, and intake pipe, ect... $150.
so $1500.

who here has a 18t or 19t?


does anyone have pictures of their gt set ups?
IF u get the right turbo u shouldn't need an exhauset addapter plate or a WG if u get an internal wastage on the turbo
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Old 08-28-2008, 10:33 AM   #15
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well when i shopped for the turbo i didnt go to the cheapest, i went with someone who has a years of feed back.

ok so for a 19t it would be $850 and im done
a gt, $1100 for the turbo, ill need the exhaust addapter plate and have it welded on, $150, new lines $50, WG $100, and intake pipe, ect... $150.
so $1500.

who here has a 18t or 19t?


does anyone have pictures of their gt set ups?
Do not get a 19T as your egt's could go through the roof. So is 850 for a 18/19t 6cm, or 5cm? Should be 6cm but just asking.
I have the 18T-6cm with a ported wastegate and I also ported the manifold because the 6 cm is kind of square and the exhaust manifold is round. I did the porting myself with carbide burs.
I have said this before, if I could do it again I would as I got bored with the power after 2 weeks. This is on my viggen, and I did not get it dynoed, but I wanted a safe tune. I would say I have 260whp max. But as we all know if one goes much higher, all hell can break loose on a viggen.
Now if you do get an 18t-6, Paul at automotion has a tune for a viggen (which he/Frank mapped from my car), and a 2.0, which he mapped from "I want a viggen". These are both custom tunes. Well, I'm pretty sure he still does. Jak may have one as well??
Good luck.
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Old 08-28-2008, 10:48 AM   #16
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you know a gt28 flows like 10 more cfm than the 28 right? I've yet to see a gt28 make more than 12whp more and not once has it been over 300...most being in the 280 rang on a 2.0 on a dynojet if they were lucky. Go with a 18t



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Old 08-28-2008, 10:58 AM   #17
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okay so how would I check to see if I had a 6cm or a 5cm tdo4?

/threadjack
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Old 08-28-2008, 11:20 AM   #18
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okay so how would I check to see if I had a 6cm or a 5cm tdo4?

/threadjack
94-98 9000 aero's have tdo4-15t-6cm. Has to be clocked to fit T7.
Viggens, hot and 9-5 aeros have 15t-5. May be leaving something out?
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Old 08-28-2008, 11:23 AM   #19
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The center sections are the same, so you can just swap compressor/exhaust housings to suit the particular car you want to run the turbo on. The dead giveaway that the exh housing is a 6cm is the tab for the brace to the engine block that the 9000's have. It'd be on the front in a 900/9-3/9-5.
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Old 08-28-2008, 07:32 PM   #20
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Do not get a 19T as your egt's could go through the roof. So is 850 for a 18/19t 6cm, or 5cm? Should be 6cm but just asking.
I have the 18T-6cm with a ported wastegate and I also ported the manifold because the 6 cm is kind of square and the exhaust manifold is round. I did the porting myself with carbide burs.
I have said this before, if I could do it again I would as I got bored with the power after 2 weeks. This is on my viggen, and I did not get it dynoed, but I wanted a safe tune. I would say I have 260whp max. But as we all know if one goes much higher, all hell can break loose on a viggen.
Now if you do get an 18t-6, Paul at automotion has a tune for a viggen (which he/Frank mapped from my car), and a 2.0, which he mapped from "I want a viggen". These are both custom tunes. Well, I'm pretty sure he still does. Jak may have one as well??
Good luck.
850 for a rebuilt 18 or 19 5cm, i need to give them a 6cm if i want it.

automotion is the last place i would go for a tune, as stated above im using jak.

on just a 15t i hit 265whp on a 2.0 so you must have a very safe tune.

Quote:
Originally Posted by SAAB9-3USA View Post
IF u get the right turbo u shouldn't need an exhauset addapter plate or a WG if u get an internal wastage on the turbo
i looked and did not see any gt28s with a 3 bolt exhaust side.
and i ment that most places sell the turbo with out the wastegate.
Quote:
Originally Posted by jssaab View Post
I have Jak's Big T28 if that's what you are asking ( 28 wheels on both sides) on my 9-5 I was able to use my JT DP from my GT17 without any changes. Jak had to clock the Exhaust housing a bit. Not sure about the differences on the 9-3.

It is a good turbo for the 2.0 but I think on my 2.3 it runs out of puff a bit ( and so does Jak.

If I had to do it all over again I would ahve gotten the TD04 18 or 19. But that's because its on my 2.3, on the 2.0 I think it is perefect....
now with your big 28, doesnt that get really hot fast? where do you see full boost?
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