Quote:
Originally Posted by AVOturboworld
I've been seeing here and there comments about how "tiny" the turbocharger that we use is, and I have to admit, it irks me. Because it is, if anything, on the large size for somebody doing a daily driver build on a 2.0-liter motor. OEM turbochargers are much smaller and run out of breath much sooner, while we've been pushing past 300whp (wheel, not crank) at 10~11psi on 92 octane fuel. That's still 4~6psi before the turbo starts running out of breath.
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Things like throttle response and drivability don't win on the Internet, it's all about peak hp numbers, drag times and what you "owned" on the street.
FWIW, I agree with you. The turbo you've used is slightly on the large side for a street driven (not street raced) car. I've had your kit on the dyno, along with others available and think anyone looking to go bigger needs to ask themselves why. If you need that hp, fine ... but don't kid yourself that you're not giving anything up and shifting the car closer to pig than Porsche. Most people confuse boost threshold with lag and they are NOT the same thing. Some pretty ordinary cars can have great looking power curves when loaded on the dyno.
There are no free lunches nor magical turbos that make 500hp from 2 litres, while still being nice when on and off throttle in a daily driven situation.
If you're choosing a turbo for street use based on a dyno sheet alone, you're doing it wrong.