Quote:
Originally Posted by FenwickHockey65
It needs to. The 3.0L's a good engine only for smaller cars. The reason it's getting such dismal fuel economy ratings (26 in the LaCrosse vs 27 for the 3.6L in the same car) is because the engine has to rev up to 5100 RPM or something to hit its maximum torque output.
Holden figured out how to get it working right in the Commodore and the 3.0L SIDI is doing amazing there, over 30 MPG in a RWD full size car. Problem is, the EPA wouldn't let GM use Holden's tune in the states.
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Yeah. It's probably why they went 3.7 on the Mustang plans. On accel I am REVVING THE PISS out of that motor (1.5K away from redline..). Then again the trans also drops 3 freaking gears to pass something when I put the hammer down.
Scared the crap out of me when it first happened. Then I realized.. "Wait, this is normal? No wonder the Edge has s*itty fuel economy."
Not to mention it cruises @ 2-3K RPM normally.
They need to move to larger Sixes for these vehicles. The power is there, but not the economy.