k03s or k03?

[wrX2104]

first off, my turbo is gone, everytime i reach boost i hear a dentist drill noise so i want to throw a new snail in there and i've been researching and i came across the k03s and the k03..from my understanding the 01 a4 1.8tq comes stock with a k03s? or just a k03? and which would be a better choice?

[Seerlah]

If you have an AWM, then get the k03s replacement (easiest to find it from a B6 A4 guy parting with his). If you have any other B5 A4, does not really matter.

[audienthusiest]

ko3s ftw

[turbo_bootin]

If you have an AWM, then get the k03s replacement (easiest to find it from a B6 A4 guy parting with his). If you have any other B5 A4, does not really matter.

x2. If you've got AWM get a K03s. Otherwise, get the cheapest one.

[wrX2104]

AWM?

[EuRo_KiD]

Yes, AWM is the engine code for the 2001 A4 1.8.

[wrX2104]

i have an 01 1.8tq, so my engine code is awm?

[EuRo_KiD]

Yup, which means your car has a k03s. So try and source out a k03s for cheap somewhere.

[Doug@FrankenTurbo]

If you guys are using the jargon "K03s" as in "comparable to a transversal K03s" then that means you're discussing the K03-073 which was used only on European trim cars. Here in the US, we got stuck with the lame K03-029, which is directly comparable to the plain ole K03 used on transversal. Making matters worse, a lot of longitudinal engines got the K03-005. That one is really lame. Puny. So the K04 is like three levels up from that base one.

[Seerlah]

The stock turbo sucks major ***. I wish the car came stock with a k04-15. If the B5 A4 wasn't such an enjoyable car to drive, I would say the car sucks on a whole.

[doubleu8]

The stock turbo sucks major ***. I wish the car came stock with a k04-15. If the B5 A4 wasn't such an enjoyable car to drive, I would say the car sucks on a whole.

sell it then?!

[Seerlah]

sell it then?!

Ahem. Someone needs to understand reading comprehension.

The stock turbo sucks major ***. I wish the car came stock with a k04-15. If the B5 A4 wasn't such an enjoyable car to drive, I would say the car sucks on a whole.

[dcampana]

lol Seerlah.

yeah i would NEVER be able to go to a stock turbo'd Audi now. i am in love with my power:) plus so nice to drive now.

[Seerlah]

I want to place an eliminator on my vehicle, but am always forwarned (sp??) that I would regret that I did not go bigger. I am thinking of piecing together a GT3071R kit over the next few months. First, have to complete my car where the only thing left is a BT and BBK (clutch is part of BT).

[dcampana]

^^ well, i have been on the 2871 for about 7k miles. i love it and have not gotten bored with it as of yet...

i have a sport bike for anything speen "need" i have above the A4...

[CrtchRktRcr]

of course you want something bigger and better, that is human nature. I'm sure the elim will last you a year or two until you want something that pulls harder.

[B5Technik]

i read somewhere on here that the ko3s is not much smaller than a ko4 and upgrading to a ko4 from a ko3s wont do much for you without a ko4 specific tune... also i know that on the trunk badge the "T" next to 1.8 is either plain or has a red flag meaning it has the sport package but does that also mean it has the ko3S? slappy_dunbar thru me a curveball with the "euro-trim" vehicles got the good turbos.. whats the deal?!!!

[Seerlah]

The k04 uses the same exhaust housing and compressor as the k03(s). The internals (compressor fan blade) is the only difference as far as I know. And I can't recall what the red flag thing is. I used to think it was referring to the sports package, but it doesn't. I am too lazy to search, but it is in the archives somewhere.

[a4sleeper]

replace with stock turbo which is ko3s for '01 then upgrade turbo when ur ready

[Doug@FrankenTurbo]

i read somewhere on here that the ko3s is not much smaller than a ko4 and upgrading to a ko4 from a ko3s wont do much for you without a ko4 specific tune... also i know that on the trunk badge the "T" next to 1.8 is either plain or has a red flag meaning it has the sport package but does that also mean it has the ko3S? slappy_dunbar thru me a curveball with the "euro-trim" vehicles got the good turbos.. whats the deal?!!!

The deal is we in the US got stuck with 1980's technology K03-029 until the B7 series came out. The higher-output K03-073 was used only on the 190hp cars sold outside of North America. Sharing a compressor wheel with the K04, the -073 has essentially the same (conservative) output rating from 3K Warner: 210 maximum.

[walky_talky20]

The red "T" doesn't mean anything. It was put on the late 2001 B5 1.8T's. 2001.5 only, afaik. Mine is an '01 with the so-called ko3s (k03-029) and it does not have the red flag on the T. Doesn't really bother me, cause my entire car is red anyhow, lol.

[dtmeurosport]

^^ well, i have been on the 2871 for about 7k miles

So did you go with the ATP 2871? And where did you source your tuning?

I have a K03 on it's way out, and I've decided it's either a K04-015 or a GT28xx... I just don't want to regret not going with the big turbo conversion...