Originally Posted by Shogun

This is more of a what if question and has a small possibility of me being able to do.

A friend of my has a 2005 WRX. He has plans to do a 16G (doesn't want the lag of the 18G or larger). This means I would have a source to get a turbo for relatively cheap that I know the history of. Plus, it may be fun to piece together my own turbo rather than just get a kit.

As for my question, would the TD04 from a WRX be worth using on our cars? It is smaller than a 16G but has his car sitting at 230AWHP right now. Factoring the drivetrain loss, this would be about, what, 260 to the front wheels? Then add to the fact that his is a 2.0 liter and we have 2.4, it should be possible to get a little more power and have virtually no lag. Would this small of a turbo have barely any lag? Especially after a port and polish?

Our cars get to 300 WHP on 12 PSI and my friends current set-up has him running 16PSI. I know different turbos make different power at different RPMS, but it seems like a TD04 could accomplish my goal of 300 WHP. Of course, the question, I guess, is will it spin out and lose momentum at the higher RPMs being so small?

As for price, yea, 16G and 18G are not too bad on price, but there is a market for them. Imagine the price on a turbo that no one wants and is only used to repair/rebuild stock cars.