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Stock K04-15 Thoughts and Impressions? Experiances? Cost?

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Old 10-27-2000, 08:42 PM
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Default Stock K04-15 Thoughts and Impressions? Experiances? Cost?

Stock K04-15. 24psi on the bottom end (i.e, 2000 to 5000rpm), maxes out
at 15psi at 7000rpm.
Old 10-27-2000, 09:08 PM
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Default Waste of money, unless 15psi is all you want till 6500 rpm.

24 psi lbs boost, your K-04 will not last.
It is only reliable to 240HP max!
Old 10-28-2000, 07:24 AM
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FMIC needed when going to stage III? Cost?
Old 10-28-2000, 07:26 AM
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Default What is wrong with 240hp?

the K04 is a better street driving turbo than the GT will ever hope to be. Its a give and take situation. The smaller turbos are going to have less lag and better bottom end which is more important for daily driving situations, especially if you passengers in the car. The bigger turbos are going to have more top end and more lag- this is life. They both have their applcations and to call the K04 a waste of money? hmmmm
Old 10-28-2000, 07:30 AM
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Default Re: FMIC needed when going to stage III? Cost?

I would think so. Compressed air gets hot and to pump out 280 hp w/o a FMIC sounds like detonation city. For the stage III cost, you can get a K04, Intercooler and and a full exhaust.

Ken Huggler
Old 10-28-2000, 01:57 PM
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Default From experience...

I have had a stock K-03 setup.
the Wett chipped.
Then Wett K-04 setup.
Then GIAC software for the K-04
Then GIAC software for the K-03
Then GT25 setup.

2 Blown K-04 turbos= Waste of Money!
K-04 setup then driving GIAC software for K-03
the car still went well, so for a little extra go between 5000-6000 rpm, not worth spending money $1000+.
Anything that does not last is a Waste of money.
I drive my GT25 on the street daily, I think it drives great.
As for LAG, GT has less lag than K04, what is your definition of LAG?
Is your definition, whay RPM the turbo starts to work?
or is LAG the response time for turbo to create full boost whilst driving above the rpm starting point of turbo.?
Old 10-28-2000, 02:25 PM
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Default Is the low end power adequate? KenHuglr makes is sound like it will be low w/ GT25

I'm going with the APR stage 3 in about a year. Are there any drawbacks to this setup. If the lag is no worse and the reliability is good, I don't know why I shouldn't do it. By looking at the Dyno, the low end looks fine, but driving it is where it counts. TIA
Old 10-28-2000, 02:26 PM
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Default GT25 parts...

I've heard that you can't buy new parts for a ball bearing turbo seperately, so if any of it busts you're in for a whole new turbo. Hope that GT25 lasts forever (or they resolve that problem soon).
Old 10-28-2000, 03:24 PM
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It has plenty
Old 10-28-2000, 05:37 PM
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Default Incorrect

Yes adiabatic compression of a gaseous fluid increases the temperature. However, tens of psi does not add very much heat. The majority of the heat comes from ineffeciency during compression. The more efficient the compressor, the less extra heat is added to the intake charge.

The K03 and K04 are very inefficient at higher power levels. A larger turbo is not. Therefore, at 240hp a K04 kit may require a more effective intercooler whereas a more efficient turbo does not at 280hp.

Todd W


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