So what is the theory behind a big tubo besides the obvious more power. I mean does it just produce more volume? Does it allow you to run more boost? My stage 1 apr is already producing about 21psi I cant imagine pushing more than that.

 

Turbos have air rates for the compressor and the turbine when you increase the air rate you can push more hp per pound of boost. Heres a demonstration.

http://video.google.com/videoplay?do...r+vw&hl=en

He has huge traction problems you can see in second, I saw another video of it during the day having traction problems at about 80mph. Anyway that is only 22 pounds of boost.

 

so basiclly you are putting more air into the engine with the same psi

 

yes you are putting more of that 21 psi in.

 

Bigger turbo basically means more airflow. The stock K03 is tiny. Here's a K03 vs a GT3076R. A GT3076R at 10 psi will produce much more power than the K03 at 22 psi due to the greater volume of air.

I highly recommend reading the turbo tech section at the Garrett website-
http://www.turbobygarrett.com/turbob...ch_center.html

 

cool deal...so what is a good size turbo upgrade1.8t then? I have heard a lot about the gt28

 

There'a a few options right now. How much are you looking to spend?

 

money really isnt a factor right now. I just want something that has room to grow and it will go good with what I have now

 

gt28 is a good starter bt

the sky is the limit

you can pretty much run any turbo you want with the right programming

but the bigger the turbo the more stress on the motor, and eventually you will have to build the motor up

30psi is probably pushing it on stock internals with just about any turbo

 

some one whats to be the tester of the first 1.8 powerd gt37r