lag

[acside]

I have heard alot of different yes's and no's so im not sure what to believe. Do turbos still have noticeable lag if they are tuned correctly or is a supercharger the way to go for even power in all ranges

[brianw]

Turbos will always have a noticeable lag.

With a small, properly sized turbo and tuning, you can get the turbo spool point down to 1700rpm or so, which is enough that most people don't notice the lag. Then, of course, high-end breathing suffers with so small a turbo...

Most modern turbo cars such as the WRX, Audi 1.8T, Volvo T5, and whatnot have some lag.

Notice the dyno doesn't start til 1700rpm or so, but it's dipping from 2400rpm to idle-- rather more severely than a NA car would.http://www.awe-tuning.com/page...7chip

I really wouldn't worry about lag in a stock car, most makers have done a pretty good job tuning so it's not a huge driveability issue. If you're swapping out the turbos to make bigger power you are usually going to worsen the lag by 500-1000rpm.

(e.g. Audi 2.7T from stock K03's to K04's here-- K04's are a pretty mild upgrade:http://www.awe-tuning.com/page...nt=28)

I'd dig up some SR20DET graphs from the T25 or T28 to the GT28RS or something else, but I was already at AWE's site. :p