Quote:
Originally Posted by Turbowned
What's your current car? The most responsive turbo car I've been in are the 2010+ A4's. Peak torque is 258lb/ft and it comes on at 1500rpm. Pretty crazy!
I don't have the energy to spew a bunch of technical data right now (if I even had any), but the seat-of-my-pants dyno tells me I want a supercharger over a turbo. With the exception of the aforementioned A4, every turbo car I've driven has lagged at the low end, which would ruin the personality of a car like this one. The linear power curve of the roots blower (can't speak from experience on a centifugal) can't be beaten. This past week I've rode in 3 Subarus - '04 STi stage 2, '11 WRX stock, and '02 WRX with hybrid 2.5block/2.0heads, VF39 turbo w/ RA gearset, and they all had laaaaaag. Compare that to my S4 which you could put a ruler on the power and torque curve; it comes on and stays on until redline which is just phenomenal. It probably helps that the engine is a 3.0L vs. a 2.5 in the Subies, though.
Anyway, I'll gladly give up peak power for responsiveness in this car, and I think most people would agree. I don't think I want more than 300bhp anyway, which I think an intercooled Rotrex and supporting mods would accomodate.
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2011 GTI. Even with a relatively high CR and a small turbo, it still feels less responsive than a NA engine.
Also, you're absolutely right about the Subaru EJ257, it's gutless below 2500 rpm. I'm glad Subaru didn't just drop that engine into a BRZ as some were hoping.