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Mazda 3 Mps

Noel

By Noel,
in General Automotive Discussion

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nsanity Rising Star

nsanity

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i cant wait to see one of those maxda 3 turbo's worked too 250-300kw

FAAAAAAAAARRRK!

I wouldn't.

220kw is about the limit for a front wheel drive. Even prior to that you start to see hideous amounts of torque steer (plant your foot, go left!).

Its well known in the UK where they have many "hot" front wheel drives sold from manufacturers.

RWD and adjustable AWD for the win.

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GT-R32 Grand Master

GT-R32

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Haven't driven either of them, but independent testing shows the 3 MPS is in fact quicker...

At least in gear I reckon a 3 MPS would take off. The launch of the 6 MPS gives it the 1/4 time advantage. Roll on would be a different story.

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Revhead Grand Master

Revhead

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Karen and I took an M3 (just for you Daveo :D ) MPS for a drive a week or two ago, and I have to admit I was more than a little impressed. I was a lot more impressed than I expected to be actually. That said, FWD dynamics don't really do it for me, and it apparently has a stability control thing in it, so I deliberately botched a corner entry to test it and it happily understeered towards the side of the road lol. In the rest of the corners it seemed to hang on quite well though, maybe they've tried to make the stability control not too intrusive? Powering out of a corner was frustrating but something I could live with given the rest of the package.

I thought the interior was fairly nice, the seats and pedal placement were good, the wheel is adjustable for reach and tilt and the dash is fairly easily readable. My only gripes were that some parts of the interior felt a bit cheap, and the clutch was really grabby, nearly as grabby as my old 5 puck brass button - it went from nothing to fully engaged in probably 10mm of pedal travel. This is fine if you're expecting to do a fair amount of track work or hard driving, but for a vehicle that I personally see as a quickish road car rather than something I'd be wanting to take to the track all the time, it's a bit annoying.

Gordo, peak power to weight doesn't tell the whole story, these things make stupid amounts of torque from 3k up until nearly the redline. In gear they are really quite impressive :(

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Noel Community Regular

Noel

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at 1400kg and 190kw, it's about the same as a stock R33, but it's not a supercar..

but look at the 294nm of torque @ 4800rpm in R33 compared to 380nm @ 3000rpm in MPS...not that i would choose one over my R33 but its quite impressive

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GT-R32 Grand Master

GT-R32

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but look at the 294nm of torque @ 4800rpm in R33 compared to 380nm @ 3000rpm in MPS...not that i would choose one over my R33 but its quite impressive

Which indicates the Mazda 3 has a higher average power over the rev range.

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Noel Community Regular

Noel

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Which indicates the Mazda 3 has a higher average power over the rev range.

as soon as you tramp it it goes where as in my 33 anything under 3000-3500rpm it takes a second or two to get going

still rather my car tho :(

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    • Kinkstaah
      Boost level and torque curve

      By Kinkstaah · Posted

      Because there is still an engine underneath that turbo. PSI is not a measurement of power, it's a byproduct of resistance. What would be really decent is to have a CFM gauge on the output of a turbo to see how much it's actually pushing. 21psi (as an example) is not the same amount of air at 3000rpm as it is at 7000rpm, even if the boost controller is controlling boost at "21psi". The engine is inhaling and exhaling way more air at 7000 than at 3000, even if it's less efficient.
    • thx78
      Boost level and torque curve

      By thx78 · Posted

      don't want anything more or less, I don't really understand why the torque still goes up to 6000-6500, while the boost peak is around 4000. if it only comes from the cams or from the boost controller etc.  
    • Kinkstaah
      Boost level and torque curve

      By Kinkstaah · Posted

      I'm not sure you understand the physics of what you are asking. Can you draw on the dyno graph what you want to have happen? I'm thinking this is a functional impossibility here, unless you chose a turbo literally so laggy that torque is at max at 7000rpm and artificially choked prior to that. Power and Torque are intrinsically linked. Power is just Torque over time. What you're really seeing in the torque graph is "Power per RPM" if that makes any sense whatsoever. You still get more power at 7000rpm than 5000rpm, because it is "power per RPM" and you have more RPM. at 7000 than you do at 5000. You still feel more powerful at 7000rpm. The torque graph will influence the rate of power increase per RPM.
    • luke gtr
      Hello from the UK

      By luke gtr · Posted

      Welcome!  If possible,  would live to see some pics. How long was it away getting the work done? Hopefully it feels like a new machine.
    • thx78
      Boost level and torque curve

      By thx78 · Posted

      yes indeed the graphic format makes a visual difference but there is on average 120nm more between 4000 and 6000rpm on the curves it is not nothing. you are right, the cams influence the torque curve. I was able to chat with one of the Hypergear tuners, he confirmed that a boost control allows you to manage the pressure after the spool. the absolute pressure (psi) on the graphics is measured where? It seems that the cams affect the maximum pressure depending on the regime but I may be wrong.   not pleasant to drive before 4000? if we spend our lives between 1000 and 3000 rpm as you say then we might as well just run diesel turbos
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