[maritimer]

I have a 99 9-5 SE 2.3T Auto. I drive this car as a fun daily driver when I'm not running around town in my dragster. I have a serious addiction to modding my cars and this is my next victim.

I bought the car for $600 from some people who didn't know how to diagnose a rolled out turbo. I quickly replaced the stock garret turbo with a TD04HL-15T 6cm^2. Then came the cold air intake mod similar to the GS one that they sell for $80. I just fabbed up a full 3' exhaust for it. A Summit Racing bullet style muffler sits where the old resonator used to sit and a Flowmaster Super 44 is towards the rear. At idle, the car has a very distinct turbo whine mixed in with a heavy gurgle. The car sounds great at high rpms without sounding like a ricer. My forge motorsports bypass valve came in today and that made a big difference in higher rpm performance.

Waiting in the garage to be installed are:
28"x9.5"2.75" FMIC
T5 cams
3.5 bar FPR

I was wondering if a 19t compressor upgrade would fit up to the stock "cobra" without any mods.

My ultimate goal with the car right now is to reach 300hp and stay there through the rest of the RPM band (hopefully while making it sound like a jet is taking off under the hood). JZW tuning has a tune for me that will allow me to do this with just the TD04HL-15T and the other mods that I have. What kind of difference would I experience with a 19T if it was installed?

Thanks for all the help guys!

 

[stipud]

A 19T does fit the stock cobra, but you would be better off fitting the 06 style cobra for sure. GS can perform the modification of the compressor housing and 06 cobra to make it fit for you. With a 19T you'd want a #6 exhaust housing as well (saab 9000), since the #5 can barely support an 18T.

Of course if you're going with a 19T, you are definitely in new piston and injector territory as well, which is where things get expensive. Since your 15T is working right now, I recommend you stick with it and 300hp for the time being.

More important is upgrading other parts of the car such as brakes, suspension, etc. to be able to handle the added power.

 

[Jssaab]

A 19T does fit the stock cobra, but you would be better off fitting the 06 style cobra for sure. GS can perform the modification of the compressor housing and 06 cobra to make it fit for you. With a 19T you'd want a #6 exhaust housing as well (saab 9000), since the #5 can barely support an 18T.

Of course if you're going with a 19T, you are definitely in new piston and injector territory as well, which is where things get expensive. Since your 15T is working right now, I recommend you stick with it and 300hp for the time being.

More important is upgrading other parts of the car such as brakes, suspension, etc. to be able to handle the added power.

Nice car there Maritier, gerat find I would love to find one like that I gotta keep an eye out.

Since you have the TD04 6 cm I would definetly go the 19t you will get right near 300 WHP and will pull like a freight train all the way to the red line.

Stipud, Chris ran that set up for years no issues on stock pistons ( as long as the tune is correct)

Maritimer, I would talk with JZW to see if you need a new FPR for his tune. I would do bigger injectors, more money but it would be better than pushing the stokers, again talk to John

You will be close to my set up ( T5,Big T28) injectos I am at 290 whp and the car is as fast as a 425 Hemi charger and 430 GTO, freaks those guys out...

With the 15T you would be near 300 WHP but I think you woudl run out of turbo and lose puff up top and see the TQ drop quickly, agoan talk with Johh

Nice car there have fun...

 

[maritimer]

Thanks guys for the input. I do like the 15T with the 6cm^2 compared to the tiny GT17, but the power just seems to die off after 3500rpm. If I can achieve a solid pull all the way through the mid to high rpm range with the 19T, I will gladly spring for the bigger injectors. I have heard that some injectors require me to switch my original manifold to a 2000 or 2001 Aero intake manifold along with changing the fuel rails and MAP sensor. Is this true with the green giants or is this just the case with the Siemens 60#?

 

[mike saunders]

Check with JZW and/or Nick Taliaferro before making the 19T switch.

A 19T might extend a bit beyond the reach of the autobox's torque envelope. It would be a world of expensive shiny bits after a few kickdown passes.

The cams and FMIC will help the breathing a bit of the 15T, so you might not want to risk the 19T.

 

[stipud]

Good point. With an auto, having low down torque delivery is ideal as well. That's the main reason I went with the Abbott hybrid GT17 with the bigger, clipped compressor wheel rather than a TD04. It's quicker for day to day driving, without having to rev the car out.

 

[maritimer]

I've had the shiny bits issue with my dragster's 5spd before and I really don't think that I need to experience that for a second time. :roll: Would there be a way to limit the boost so that I don't rip the autobox out of the car if I did run the 19T? I just want my turbo to be spooled perfectly at the "drop-off" of each shift point when I have it in the sport mode. I just sent John at JZW another email.

Also, what is the easiest way to get TDC when swapping the cams. Does anyone know the proper torque specs for all the bolts holding the cams down?

 

[maritimer]

Damn, just got my reply from John. That's a negatory ghost rider. Too bad though. I wish I had a manual transmission. I will have to max-out the 15T for the time being unless there is another size compressor that would be workable. If anyone has any ideas, I'm all ears...

 

[mike saunders]

Damn, just got my reply from John. That's a negatory ghost rider. Too bad though. I wish I had a manual transmission. I will have to max-out the 15T for the time being unless there is another size compressor that would be workable. If anyone has any ideas, I'm all ears...

The T5 cams will help the upper range breathing, as will the FMIC.

You might consider getting the 15T rewheeled to a 16 or 18, but with a conservative tune.

 

[maritimer]

I have heard of people converting to 18T set-ups, but they say it will run about 450 to 550 bucks for the milling. If there is a way to achieve this without the high price I would be all over it, but I'm not sure the cost would be worth the power difference. What is needed for a 16T set-up?

The T5 cams are going on this Friday, so I will re-evaluate what I think about the 15T spool-up then. I have full on pneumonia at the moment, but I am determined to get it done.