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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 06-05-2009, 08:19 PM   #1
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t25 to t28 upgrade

well i have recently had a seal go in my turbo. im going to replace it. but i am interested in doing the compressor upgrade to the t28. im wondering roughly how much it would cost and what i would have to do to remount it into my car. any difference in inlet and outlet sizes?

Alex
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Old 06-05-2009, 08:36 PM   #2
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If its a proper t28, it will bolt right up with no modifications. The only thing is if you go with a bigger turbo, you need to get a new ECU and bigger injectors.
That said, I have a 'big' T28 which is working out great for me, expect to pay around $500. PM Chadwick on here, he does them.
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Old 06-05-2009, 08:43 PM   #3
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500 just for the turbo or for everything? cuz if thats for everything that seems cheap. what injectors did you run? and wouldnt i just be able to program my ecu?
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Old 06-05-2009, 09:01 PM   #4
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haha unforunately its not including everything. My setup is Delphi 50 pound/hr injectors, a true big t28 turbo and a custom tune from JZW. I think it was around 1000 bones for everything.
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Old 06-05-2009, 09:04 PM   #5
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where did you get your injectors? the only ones ive found are the bosch on elkparts.

8valvegrowl can do a custom tune i believe so thats the part im least worried about.

i just want more powahhh. im not as thrilled with what i have anymore.
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Old 06-05-2009, 09:08 PM   #6
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would i be better off just getting a td04? i mean the oil lines need to be changed but would it cost less and still allow me to greatly improve power?
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Old 06-05-2009, 10:22 PM   #7
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hey man i have a t25/28 and 50lb injectors i been meaning to put up for sale. also have it still mated to the exhuast manifold. works great. pm me if your interested
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Old 06-06-2009, 06:43 AM   #8
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I have ran around for years on an upgraded T28 done by Limit Engineering in AZ with no upgraded injectors or ECU. Back then it was around $500.

Ask Chadwick to do it up for you.

Once EPL gets a wideband we are gonna turn it up really good.
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Old 06-06-2009, 07:06 AM   #9
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pm sent.
yeah the ecu wouldnt be a problem. IIRC 8valvegrowl could give me a custom tune.
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Old 06-06-2009, 10:54 AM   #10
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haha unforunately its not including everything. My setup is Delphi 50 pound/hr injectors, a true big t28 turbo and a custom tune from JZW. I think it was around 1000 bones for everything.
So did you go with a T25 upgaded to a T28 from Chadwick or a pure T28?

If the latter, are any cars fitted with T28 stock that fit in the Saab?
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Old 06-06-2009, 12:10 PM   #11
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Yep, Chad upgraded a T25 he wanted gone so I got a good deal on it. Its a true 'Big' T28 because the internals were bored out to accept the full t28 wheels. I dont think he does them anymore since the machining process is labor intensive and not worth the extra money but I lucked out on one.

I dont think there are too many T28 turbos off of other cars, but Garrett GT28 turbos fit.
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Old 06-06-2009, 01:59 PM   #12
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I can do staged tunes right now, not full-on custom tunes.

I think you'd be surprised how much power a T25 Stg 2 or 3 tune puts out.
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