which turbo do people use on stg3 setup?
2.7T (B5 S4, C5 A6, AllRoad)




K03/K04
[*]Complete bolt on[*]Utilize stock inlet piping[*]K03 turbine wheel[*]K04 compressor wheel[*]CNC machined compressor housing[*]Quick, stock like spool[*]Increased airflow and boost capabilities over stock[*]Increased reliability[*]Updated bearing housing
Options[*]Port/Polish[*]Ceramic Coating[*]Clipped turbine Wheel[*]Zero Clearance
Price: $695 each with exchange


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K03/16
[*]Complete bolt on[*]Utilize stock inlet piping[*]K03 turbine wheel (clipping is standard)[*]K16 compressor wheel[*]CNC machined compressor housing[*]Billet aluminum backplate[*]Increased flow and boost capabilities over stock K03 and K03/K04[*]Lower shaft speeds[*]Improved reliability[*]Updated bearing housing
Options[*]Port/Polish[*]Ceramic Coating[*]Zero Clearance
Price: $895.00 each with exchange


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K04-25/26
[*]OEM K04 off B5 RS4[*]K04 turbine wheel[*]K04 compressor wheel[*]Improved reliability[*]Lower shaft speeds[*]Updated bearing housing[*]Requires RS4 inlet piping
Options[*]Port/Polish[*]Wastegate Porting[*]Ceramic Coating[*]Zero Clearance[*]Clearanced Turbine Housing
Price: Email for current price


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K04/RS6
[*]Based off RS4 K04 turbocharger[*]K04 turbine wheel[*]RS6 compressor wheel (larger and more efficient than RS4 K04)[*]CNC machined compressor housing[*]Billet aluminum backplate[*]Lower shaft speeds[*]Increased flow and boost capabilities over K04[*]Increased reliability[*]Updated bearing housing
Options[*]Port/Polish[*]Wastegate Porting[*]Ceramic Coating[*]Zero Clearance[*]Clearanced Turbine Housing[*]Inlet Mod[*]Upgraded Actuators
Price: $1650 each or $550/turbo to upgrade existing K04's*
*If upgrading used K04's, add $250/each for rebuild


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K04/24
[*]Based off RS4 K04 turbocharger[*]K04 turbine wheel[*]K24 compressor wheel[*]CNC machined compressor housing[*]Billet aluminum backplate[*]Lower shaft speeds[*]Increased flow and boost capabilities over K04[*]Updated bearing housing
Options[*]Port/Polish[*]Wastegate Porting[*]Ceramic Coating[*]Zero Clearance[*]Clearanced Turbine Housing[*]Inlet Mod[*]Upgraded Actuators
Price: $1800 each or $750/turbo to upgrade existing K04's

 

Anything other than a ko4 seems to be a waste of money. The ko3/ko4 seems so be ok if you are on a budget but it dose not make sense to me to take a turbo that is prone to fail (ko3) and try to jazz it up
As for the other turbos I have seen severalpeople making clams but in the end I have not seen one person make any improvement in 1/4 mile time or on the dyno

But what do I know I drive a V8

 

Most people did Standard K04 upgrades in the past on the S4. Lately K03/k16 and k04/rs6 hybrids are coming to the front more and more as a way to make additional power. I have the k03/k16 hybrids and so far I'm very happy.

 

what website is that all from?

 

Hey devils4, what kind of power are you making with your hybrid setup and on what grade of fuel?

 

If you read the description, it's tells you what the differences are.

Most of them are Hybrid turbo's using either a K03 base (stock turbo) or a K04 base (RS4 upgraded turbo).
OTS kits are just plain jane RS4, K04's. The RS6 hybrids are a new thing for top end HP, with the much bigger turbine (cold side) wheel.

Just about all the OTS STG III software out there is for plain K04's.

When I go K04's, my thought is to get them cleaned up, & ceramic coated.

 

This is all from Buehn Engineerings site. As far as power levels on my setup I don't know. I went from straight k04's to the k03/k16 hybrids and noticed a big difference low end (stock like spool up) and no noticeable loss of top end. I also have GIAC/Vast stage 3 fueling and many other mods so it mightbe different for others. If I have to estimate I'd say about 450 crank hp or soon the turbos on 93 with octane booster.

 

thanks for the info !!...for some reason I thought they only made one type of K04 turbo...lol.

wedsite:

http://buehnengineering.com/27t.htm

 

why don't we used a ball bearing turbo and is there an advantage in doing so?

 

Devil..you really think 450??


CAn someone please show me someone with hybrids that is running faster or pushing more power with hybrids over the plain k04's... AS far as i know, i havent seen it... they are more money and are riskier (in terms of not as reliable) and i havent seen the gains yet.... people say their better as their more powerful..but as far as ive seen it puts down the same amount as rs4 k04's