Turbo BMW M3. Large turbo. Turbo got to full boost 500RPM sooner, too. You guys get the idea....sky's the limit these days. But manufacturers play a big game of trade-offs (generally). You want more torque down low? Want more power up top? They (generally) like more torque down low and quicker spool (driveability issues)...so that means smaller turbos. Which means power suffers up top and drops off fast on these small displacement cars.
Quote from: rrocket on January 30, 2019, 05:53:48 pmTurbo BMW M3. Large turbo. Turbo got to full boost 500RPM sooner, too. You guys get the idea....sky's the limit these days. But manufacturers play a big game of trade-offs (generally). You want more torque down low? Want more power up top? They (generally) like more torque down low and quicker spool (driveability issues)...so that means smaller turbos. Which means power suffers up top and drops off fast on these small displacement cars.so, i've been driving the Sorento the last couple of days, and maybe it's just because i don't drive it too often, but it seems extra zippy lately...could the really cold air temps have something to do with that?...i think the colder the air, the more dense it is?...maybe it's just because i'm used to my Rio5, but it seems like it's got a bit of extra grunt with the air temps in the -20C to -25C.
Quote from: dirtyjeffer on January 31, 2019, 11:14:05 amQuote from: rrocket on January 30, 2019, 05:53:48 pmTurbo BMW M3. Large turbo. Turbo got to full boost 500RPM sooner, too. You guys get the idea....sky's the limit these days. But manufacturers play a big game of trade-offs (generally). You want more torque down low? Want more power up top? They (generally) like more torque down low and quicker spool (driveability issues)...so that means smaller turbos. Which means power suffers up top and drops off fast on these small displacement cars.so, i've been driving the Sorento the last couple of days, and maybe it's just because i don't drive it too often, but it seems extra zippy lately...could the really cold air temps have something to do with that?...i think the colder the air, the more dense it is?...maybe it's just because i'm used to my Rio5, but it seems like it's got a bit of extra grunt with the air temps in the -20C to -25C.That's not just something you think. That's something that is. It's why hot air balloons float. And why intercoolers are a thing.
There is the chart
Let’s talk about turbos vs normal aspiration at altitude. Say 3500 feet. I certainly know that I would want a turbo then.How much torque drop off with a NA motor vs forced induction?
Quote from: Airbalancer on January 31, 2019, 11:34:12 amThere is the chartwell, it has the air density, but i don't know what the formula is to calculate how much extra HP/TQ i would get because of that increased density (which was more what i was looking for)...it looks like the air density is increased about 10% (vs 0C)...more air equals more fuel equals more power, but not sure what that number would be.
So 260hp in for the 2.4 turbo in the Ascent. 230-40 for a normally aspirated version of 2.4L maybe?
BS indeed. You can certainly give a car more horsepower than it was designed to handle. But please, I'm just buying that an extra 30 hp would make this thing twist itself into a pretzel.
The oversteer is the biggest reason to get an 86!
Quote from: DKaz on February 02, 2019, 12:09:13 pmThe oversteer is the biggest reason to get an 86!True. But with an extra 75-100hp it might get a little too much. Just reign in the chassis so it feels as it does now, but with the extra ponies. Honestly, I have no idea of how this car got past legal. It's easily the most tail happy stock car I've driven that wasn't using big power to induce it.