GJ-Molestor
Banned
- :
- 2011 BMW 528i, 2015 Mazda 6, 1995 Nissan Maxima Manual
Very interested in the 2.5L Turbo engine and trying to get a better idea of its power delivery just in time for it's introduction in the Mazda 6 engine. Mazda has spent quite a lot of time studying how the average person driver their vehicle, and made an engine centered around that which makes lots of torque from a lower, more usable RPM. this not only lets the car get up and go faster, but vehicle efficiency increases as well because you simply don't have to rev the car as hard in order to get up to speed. The CX-9 makes max torque at 2000rpm so I think this is the lowest engine speed you should be at during any given time.
Turbo engines behave, respond and deliver the power much differently than the NA motors that most of us are used to. with a few simple tweaks to your driving style, you can note a huge increase in performance and fuel economy. for one, you should never put the pedal all the way down to the floor, even if you are trying to go as fast as possible. when increasing throttle position, you want to gradually open up the pedal in one linear motion. even if you are racing, you will still go faster if you use about half throttle off the line and then start to ease into the pedal. you will feel the turbo responding much more linearly and quicker this way. think of a turbo engine like this - when you try to go fast, and just stomp the pedal, the turbo will fall flat on it's face because you must build pressure within the engine itself first before the turbo can start to spool, so rushing the engine with too much throttle initially will make the car feel slower. another very important thing to note about turbo engines, especially like ones in the CX-9 which are designed to make the most torque at a lower RPM, is that you should never rev the engine to redline, or even anywhere near it. I know that the claimed redline is 6000RPM, but max HP is only at 5000RPM and you will feel a huge drop in power once you go past 5000. again, even if you are racing or trying to go fast, you will still go faster by shifting at 5000RPM. this helps keep the engine nice and happy in it's meaty powerband. turbo engines run rich (increase the amount of fuel in the mixture, decreasing performance and efficiency) at high RPM's in order to protect the engine from the high stress and heat of the turbo, so there is absolutely no point to go all the way to redline.
so, CX-9 owners. What RPM do you typically shift at that offers the best balance between performance and efficiency? it's a heavy car, so 3000RPM? looking forward to seeing this engine in the smaller and lighter Mazda 6.
Turbo engines behave, respond and deliver the power much differently than the NA motors that most of us are used to. with a few simple tweaks to your driving style, you can note a huge increase in performance and fuel economy. for one, you should never put the pedal all the way down to the floor, even if you are trying to go as fast as possible. when increasing throttle position, you want to gradually open up the pedal in one linear motion. even if you are racing, you will still go faster if you use about half throttle off the line and then start to ease into the pedal. you will feel the turbo responding much more linearly and quicker this way. think of a turbo engine like this - when you try to go fast, and just stomp the pedal, the turbo will fall flat on it's face because you must build pressure within the engine itself first before the turbo can start to spool, so rushing the engine with too much throttle initially will make the car feel slower. another very important thing to note about turbo engines, especially like ones in the CX-9 which are designed to make the most torque at a lower RPM, is that you should never rev the engine to redline, or even anywhere near it. I know that the claimed redline is 6000RPM, but max HP is only at 5000RPM and you will feel a huge drop in power once you go past 5000. again, even if you are racing or trying to go fast, you will still go faster by shifting at 5000RPM. this helps keep the engine nice and happy in it's meaty powerband. turbo engines run rich (increase the amount of fuel in the mixture, decreasing performance and efficiency) at high RPM's in order to protect the engine from the high stress and heat of the turbo, so there is absolutely no point to go all the way to redline.
so, CX-9 owners. What RPM do you typically shift at that offers the best balance between performance and efficiency? it's a heavy car, so 3000RPM? looking forward to seeing this engine in the smaller and lighter Mazda 6.
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