Originally Posted by stevieturbo

Lag is shit !




It really is true. Turbos have come a huge way in recent years. So if comparing to something that's old and crap...the modern unit will just destroy the old one everywhere. They really are and can be that much more efficient.

A good example is a car I did recently, 2.5 Subaru. I've done a lot of these over the years, various specs, engine sizes etc etc...and TBH very few impress me ( high expectations ? )
Some were ok, some did make decent power, but even with very good drop in replacements, billet wheels etc etc....they either were not very good up top, or not very good down low. Almost none ever got it just right. None were terrible, they were all very fast...but there was always room for improvement.
It almost always took a full rotated setup to start to feel good.

Then at the start of this year did another, and again a new latest/greatest turbo, Garrett based, billet, all the usual. Still a small turbo compared to many though. And in a heavy 2007 car....which makes things harder to impress, but this really was impressive. Full boost, around 1.8 bar by 3200rpm and pulled just as strong right until the 8k redline. At a guess it would be in the 5-600hp range, certainly 500+ with ease. ( I don't do dynos...fast car always wins over something with a silly pub dyno printout )

And I do not impress easily !! Most other cars of a similar nature, with different turbos would only be seeing that spool at maybe 4k, some even later and even some of those might have struggled a little up top too.
This one really was sweet everywhere and made for a super fast, smooth road car.

Even just a good turbocharger really can transform a car...with supporting mods it can get even better.