Quote:
|
Originally Posted by JoeFromPA
Blue-
I have owned a Subaru 2.0t and 2.5t
I had a 2005 Saab 9-2x Aero (Subaru 2.0t 5-speed) - Wagon body
I currently own a 2008 Subaru Legacy GT 5-speed (2.5t, ~243-250 HP/tq) - Sedan
The 2.0t was underpowered at low rpms and didn't come alive until 3500 rpms. And I mean below 3000 rpms it felt wheezy.
The 2.5t is a whole different beast and feels fine above 2000 rpms.
Both cars have very restrictive exhaust setups, stock, and leave alot of tuning potential on the table.
If the OP is going to open up the exhaust (i.e. a single high-flo cat and nice open exhaust path for the turbo) and going to tune it, then the 2.5 liter will hit HARD starting at 2500 rpms on a stock-sized turbo. It will be laying down over 300 lb/ft of torque at 3000 rpms, again on the stock turbo and without fueling mods.
Otherwise, stock, the 2.5t feels fun at 3000 and hits hard at 3500rpms, but doesn't have the "flat on it's arse" feel of the 2.0t below 3000.
|
My previous car had a 200hp/210tq 2.0T engine with the small Garett T25 turbocharger. When I moved over to the 227hp/214tq WRX with the Mitsu TD04-13T, I was really turned off by the huge amount of turbo lag. The T25 starts to boost at just over 2000 RPM, but it then runs out of steam at about 5500 RPM. The TD04 doesn't start delivering power until over 3000RPM, as you say, but then pulls much harder all the way to 7000. For daily driving, I actually prefer the smaller turbo as it's making torque in the rev band that I'm using. I can only imagine what a beast the V8 in the last Lotus Esprit must be with four T25s making power all the way through the rev range.
I don't think I'll ever really get used to the turbo lag in the WRX, but I've learned to live with it. As I mentioned before, it's much more like an on/off switch than the 3.2 boxer-6.
Legacys were rated at 243hp/241tq, STis 300hp/300tq. It sounds like the 2.5 is probably a good compromise of torque off boost and on. It's probably much peppier when attached to a 2600 pound (or so) RWD car as opposed to an AWD 3200 STi or 3400 pound Legacy as well.