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Hi guys,
I've been looking into the TD04 upgrade from the Garrett turbo in my 99 9-3 SE 'vert. I'm planning on following the instructions from platanoff to do the upgrade, but I had a few questions I couldn't seem to find explicit answers through searching.

My current plan is to go to the junkyard and pull a used turbo out and get it rebuilt (seems to be a much better & reliable option compared to the cheap eBay knockoffs). It sounds like anything from a Viggen or an SE with a HOT motor from for model years 00-03 will have the turbo I'm looking for... I'm curious if newer Aero models will also have the bolt-on turbo with the same flanges, or is it different? Trying to see what models I can set up alerts for to pull the turbo out of.

Anyone know if the inlet pipe from GenuineSaab used in the platanoff guide is required if I'm pulling from a junkyard? That is, if I'm already pulling a turbo out of a 9-3 HOT for example, can I take it's inlet pipe as well, or do I need the aftermarket one?

Last questions... I haven't seen any definitive information regarding new injectors/fuel pumps for this turbo. Are they a necessary upgrade prior to upgrading the turbo? Or do stock ones keep up, or is it really dependent on my tune and what real-time monitors are telling me at WOT?

Any help appreciated, I've done a lot of research and I think these are my last few sticking points before pulling the trigger.

FWIW I have a 3" full turbo-back exhaust if that affects any answers... Not sure if I need much more prior to this upgrade (I will be getting a new tune to handle the new turbo of course)
 

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Hi guys,
I've been looking into the TD04 upgrade from the Garrett turbo in my 99 9-3 SE 'vert. I'm planning on following the instructions from platanoff to do the upgrade, but I had a few questions I couldn't seem to find explicit answers through searching.

My current plan is to go to the junkyard and pull a used turbo out and get it rebuilt (seems to be a much better & reliable option compared to the cheap eBay knockoffs). It sounds like anything from a Viggen or an SE with a HOT motor from for model years 00-03 will have the turbo I'm looking for... I'm curious if newer Aero models will also have the bolt-on turbo with the same flanges, or is it different? Trying to see what models I can set up alerts for to pull the turbo out of.

Anyone know if the inlet pipe from GenuineSaab used in the platanoff guide is required if I'm pulling from a junkyard? That is, if I'm already pulling a turbo out of a 9-3 HOT for example, can I take it's inlet pipe as well, or do I need the aftermarket one?

Last questions... I haven't seen any definitive information regarding new injectors/fuel pumps for this turbo. Are they a necessary upgrade prior to upgrading the turbo? Or do stock ones keep up, or is it really dependent on my tune and what real-time monitors are telling me at WOT?

Any help appreciated, I've done a lot of research and I think these are my last few sticking points before pulling the trigger.

FWIW I have a 3" full turbo-back exhaust if that affects any answers... Not sure if I need much more prior to this upgrade (I will be getting a new tune to handle the new turbo of course)
Are those instructions from platanoff about how to upgrade the turbo internals?
 

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Arashi Dynamics has a few turbo options for around $650. Idk how that’s compares to a rebuilt turbo. I believe Arashi is pretty good quality, I’m planning on buying one of theirs at some point.
Edit: spelling
 

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You can find the td04-15t turbo on quite a few cars, Viggen and HOT 9-3 as you listed but also later 9000s, first gen 9-5s. The ideal unit is from a 97-98 9000 CSE which has a different exhaust housing with a larger path for gas to flow, search for 'td04 6cm' to go down that rabbit hole. Later 9-5s also came with a different style compressor housing which lets you use a higher flowing inlet pipe,searching 'king cobra inlet' will get you more info on that.

You'll want the water and oil lines from the junkyard turbo, including the oil drain. Get the inlet pipe and the rubber hose which connects it to the airbox.

The Taliaferro pipe makes the inlet part of the project a bit more plug and play but it's not essential. I've got a car with each style piping, check out the pictures and you can see how different the configurations are. You will need to do some driveway engineering to get that set up without the Taliferro part.

As far as performance boost, just installing this turbo will get you NOTHING! The performance characteristics between the Garrett and TD04 in stock configuration are very similar, the ECU will take a few hours of driving to adapt to the boost response of the different turbo but will make adjustments and you will be more or less back where you started. A basic tune with your stock turbo will get you much more bang for your buck, if you haven't upgraded the intercooler yet that would be another worthwhile modification before you start changing turbos.

The real benefit to this swap is that you can source the 'upgraded' td04 parts, like exhaust housing and inlet pipe, much easier. The '-15t' in the labelling of the td04 refers to the compressor wheel, you can find larger (16t 18t 19t) compressor wheels stock on some Volvos which again makes upgrading the td04 with junkyard parts easy.

Edit: forgot the pictures 3816 is the factory set up for the Garrett turbo, should look familiar. 3812 is a TD04 set up, you can see the metal pipe is much longer and the recirc hose and crankcase vent attach differently.
 

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+1 for the ECU tune and intercooler upgrade.

I have the Arashi td04-19t and it’s been running great for a year.

Download T5suite or T7suite to match your ECU and you can start logging data. Check your injector duty cycle, I’m still on stock injectors and pump but hit 99% at the top end.

Get a wide band O2 sensor so you can see what your AFR is doing.

Check your intake air temp. WOT pulls with the stock IC show how inefficient it is, I was hitting 70 degrees C with one pull.

Be careful it’s a deep rabbit hole, but so much fun.


Sent from my iPhone using Tapatalk
 

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I might have almost everything you need for the a stock TD04 turbo setup if you go that route: turbo, lines, cobra & hose, etc, but I won't know that for a a week or two. I have to check all the detailed stuff. I have a TD04 that's in reasonable running shape and one that's cheaper that definitely needs a rebuild (no blade contact, but too much play). The lines I have to figure out.

If you just want to watch for cars, an OG 9-3 SE is the golden goose for you. Turbo, lines, intercooler, hoses... everything is bolt on perhaps except for the intake going from T7 style to T5 airbox. I think Nick has that covered.

You can use the standard inlet pipe off a GT 17 or TD04 from any OG9-3 or early 9-5, they're all the same. If you can find an '06 to '08 9-5 Aero, you can source the super king cobra and cold side off of that. Or go with the GS pipe, maybe that simplifies the change back to a T5 airbox? The later 9-5 (2006+) has a variation in how the PCV line comes in (push in vs. banjo) but otherwise the turbo and inlet are plug-n-play if you get the TD04 lines. Nick's 3812 photo is the newer type PCV on the OG 9-5 super king. The TD04 that came on the OG9-3 and 9-5 before 2006 uses a banjo bolt.

You can use the stock intercooler off an OG9-3 SE as a bolt in crossflow. You want the hoses too. If you're into spending more money and/or "many pulls of power", you can get an ETS, DO88, etc. You still want the stock hoses (or buy DO88's expensive ones). The other choice is an Ebay bar-n-plate IC and custom piping.

You can use the same injectors, fuel pump, etc up to stage 3. So unless you're going big, no concerns there. If you decide to go the -19T route, then maybe injectors, FPR, pump, etc. Find a TD04 with the 6cm exhaust hosing (9000 Aero, manual) is a bit of looking for a unicorn. If you go 19t and don't have at least a 6cm housing you'll need to have the wheel clipped... time for Gpop to build you a custom 19t from your core.

If you tell us what state you are in, we might be able to suggest a local tuner. There are also reputable guys doing it by mail or one of the commercial tuners.
 

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Discussion Starter #9
I had thought I could replace the garrett with the td04-15t and get more power with a stage3 that way, and then when upgrading and rebuilding to the 19t I'd probably be doing fuel upgrades and potentially the forged pistons and all that goes with that, but it sounds like the 15t doesn't make much a difference is that true?

I currently have the stage2 tune from BCB, not sure if after replacing the turbo I need to have it tuned locally or the stage3 from them with the td04 is any good, thats kind of what I was leaning towards because I like the stage2 so far.

It's weird that my 9-3SE doesn't have the crossflow intercooler, is that because it's a convertible? Yeah i've seen the tubing alone costs like 250$ so I'm planning on trying to grab that from a car that came with the crossflow as well, we'll see how lucky I can get.

I live in CO also
 
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