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Old 02-14-2010, 07:02 AM
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Just Bein' Curious

Now, I've heard the 03 year on the 6.0 was a really good year for the turbo. I've heard it, and I assumed it would be, but what was it that they did different in 03 compared to the other years? I'm not gonna do the 03 turbo swap but I was just wonderin' why everybody likes the 03 turbo year?
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Old 02-14-2010, 07:06 AM
wriott
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the 03 turbo has less exhaust turbine fins on it so it whistles louder... some have also said there is a slight power increase with the 03 turbo over 04-07 turbos
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Old 02-14-2010, 07:07 AM
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It only has 10 veins in the turbo, that is where the awesome sound comes from
FYI: 04's have 12 veins and 05-07's have 15 veins
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Old 02-14-2010, 07:08 AM
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interesting, i have also wondered the same thing
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Old 02-14-2010, 07:09 AM
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Quote:
Originally Posted by wriott View Post
the 03 turbo has less exhaust turbine fins on it so it whistles louder... some have also said there is a slight power increase with the 03 turbo over 04-07 turbos
I have heard that before, but Im not sure if I believe it or not.
I would really like to see some before and after dyno sheets of an 03 turbo swap
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Old 02-14-2010, 07:09 AM
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Quote:
Originally Posted by stroken04 View Post
It only has 10 veins in the turbo, that is where the awesome sound comes from
FYI: 04's have 12 veins and 05-07's have 15 veins
why did they change them through the years?
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Old 02-14-2010, 07:14 AM
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Ah ok! Thanks Wriott. It always seemed to me that the 03 turbo was louder. I thought I mighta just been dreamin' though. I didn't know it had anything to do with the vanes. Now it makes me kinda want to do the swap! lol. If there was a HP increase I'm sure it wouldn't be by too much more.
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Old 02-14-2010, 09:42 AM
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my truck is an 04 with an 03 turbo and i have to say it is louder than most 04's in my opinion. gotta look out for the hpop on the 03 and 04's though
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Old 02-14-2010, 06:14 PM
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The 05+ has a improved unison ring and improved turbo drain tune. They are suppost to resist coking and be more reliable than the 03-04 units. I will say that most vgt performance turbos seem to be built around the 10 vane 03 type wheel not sure if that is for the sound or for actual power/cfm gains.
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Old 02-14-2010, 06:19 PM
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They sound great but I don t think they make more power.
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