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    X51 (powerkit) graph and info

    Don't know if you guys have seen this already, and I'm sorry if it's a repost, but this graph gives a good comparison to the normal Carrera S engine.

    Here's the marketing hype from Porsche:

    Quote:
    For some, engine data is dry and academic, just numbers written on a page. At Porsche, we view them as something else entirely: a precise indication of the driving pleasure that an individual car can provide.

    The 911 Carrera S delivers total power output of 261 kW (355 bhp) as standard. From the moment you turn the key in the ignition, the adrenaline starts to flow. If you wish, you can raise the heartbeat higher still with the Powerkit engine conversion. Available as an option on all 911 Carrera S and 911 Carrera 4S models, it is compatible with both the six-speed manual gearbox and Tiptronic S. Offering a maximum output of 280 kW (381 bhp), the results are 0 to 100 km/h (62 mph) in just 4.6 seconds, 0 to 200 km/h (124 mph) in 14.9, and a maximum speed of 300 km/h (186 mph; all data valid for 911 Carrera S Coupé with manual gearbox).

    The key advantage of the Powerkit package is the optimised gas-flow on inlet and exhaust. This is achieved by means of modified cylinder-head geometry. Other new features include an aluminium intake manifold and revised exhaust manifolds with larger bores. Controlling it all to optimum effect is the uprated engine management system.

    The performance is matched by the sight and sound of the carbon-fibre housing for the air filtration system and the sports exhaust unit with integral sports tailpipes. All are designed for optimum throughput and thus optimum engine performance. While the engine acoustics are considerably enhanced, you also retain the option of switching to lower sound levels whenever circumstances require.

    In the track environment, you can fully experience the increased power output across the entire range of engine speeds. The car is more responsive, more athletic, more adept - even more of a Porsche 911.




    Looking at this graph there's no reason why a powerkit car should feel slower than a normal car at lower rpm, the X51 graph is equal or slightly better than the normal graph up to 4500 rpm. But I guess it's psychological thing since the powerkit is that much stronger/faster at higher rpm (just look at the difference in torque at 5500 rpm) The normal engine has a peak torque of 400 nm at 4600 rpm, while the powerkit stays above 400 nm all the way from 4200 rpm to 6500 rpm

    So Fanch, from about 5000 rpm you should really start to feel the difference according to this graph - if you ever get your car


    Re: X51 (powerkit) graph and info

    Impressive stuff....Anyone know how much much it is to Retro fit the X51?

    Re: X51 (powerkit) graph and info

    "The performance is matched by the sight and sound of the carbon-fibre housing for the air filtration system and the sports exhaust unit with integral sports tailpipes. All are designed for optimum throughput and thus optimum engine performance. While the engine acoustics are considerably enhanced, you also retain the option of switching to lower sound levels whenever circumstances require. "

    Thanks for that Temm.
    Where did you find this article please? Couldn't find it on the Porsche website.
    Interesting comments about the air filter, I didn't know a more performance optimised air filter could improve the sound of the engine, but all the better for it!
    They mention the acoustics are considerable enhanced, but compared to what? If it's the PSE we all know that it sounds sportier. Or is it the PSE + Powerkit that sounds even more sporty than a regular 911S + PSE. It's unclear.
    I'll have to pay a visit to RC and do a thorough comparison I guess

    Re: X51 (powerkit) graph and info

    Quote:
    Fanch said:
    Where did you find this article please? Couldn't find it on the Porsche website.




    Go here (in english):
    In detail - Drive
    And click on Powerkit

    French version:
    Kit performance


    Quote:
    Interesting comments about the air filter, I didn't know a more performance optimised air filter could improve the sound of the engine, but all the better for it!
    They mention the acoustics are considerable enhanced, but compared to what? If it's the PSE we all know that it sounds sportier. Or is it the PSE + Powerkit that sounds even more sporty than a regular 911S + PSE. It's unclear.
    I'll have to pay a visit to RC and do a thorough comparison I guess



    In theory Powerkit + PSE should sound even better/harder at high rpm than 911S + PSE because of "the optimised gas-flow on inlet and exhaust. This is achieved by means of modified cylinder-head geometry. Other new features include an aluminium intake manifold and revised exhaust manifolds with larger bores."

    But as you say, I guess it's only one way to find out, side-by-side comparison

    Re: X51 (powerkit) graph and info

    How much more money do you think it cost for Porsche to put this option on a car ?

    Re: X51 (powerkit) graph and info

    Quote:
    OCEAN said:
    How much more money do you think it cost for Porsche to put this option on a car ?



    The real question is how much Porsche saves by selling 355hp engines instead of the originally developped 381!

    Seriously, not sure, I'd say maybe 20 Euros for the Carbon air filter. That's about it really. Same man hours, same components but optimised.

    Bear in mind I'm talking OPEX here, in terms of CAPEX, humm, definitly quite a bunch (testing, research, etc.)

    Re: X51 (powerkit) graph and info

    Quote:
    OCEAN said:
    How much more money do you think it cost for Porsche to put this option on a car ?



    I hear you, but you know what--you can say that about any option on a Porsche. X51 is expensive, but at least it puts the money where it matters.

    Would I prefer for X51 to be $5,000 or even $10,000 (in the US it's $16,900)? You bet. Porsche unquestionably prices the option to curtail demand, and factory power from Porsche has never been cheap. I have to tell you, however, I am loving my X51 and am I ever glad I got one of the Club Coupes (the built in discount in the Club Coupe's pricing mitigates the cost of X51 down to about what the rest of the world would pay for it).

    Re: X51 (powerkit) graph and info

    Quote:
    mish said:
    Impressive stuff....Anyone know how much much it is to Retro fit the X51?



    My dealer tells me it is $14,500 for the kit and $5,460 ($105/hour x 52 hours) for labor per PCNA. If that is accurate then you are saving just over $3,000 to have it factory installed.

    Re: X51 (powerkit) graph and info

    Paul S, please describe your driving impressions of the X51. I have a Carrera S and I'd like to understand how noticiable the differences are. Have you driving a non-X51 S w/ Sports Chrono (more aggressive throttle mapping)?

    Re: X51 (powerkit) graph and info

    Guys, $20,000 is not worth the difference. Afterall the X51 is not that much better in my opinion. I think anyone who is power hungry enough to spend $20K for a little bit of performance improvement will not be happy with 380 h.p. either, at least his/her happiness will not last. So why not spend another $10K and get the GT3

    Re: X51 (powerkit) graph and info

    Quote:
    edz61 said:
    So why not spend another $10K and get the GT3



    Read the news and make that $50k

    Re: X51 (powerkit) graph and info

    Quote:


    To each his own...Maybe some of us think spending 10k for a set of rims and tires is too much. Some of us will drop 10-15k in an after-market stereo. If 20K gets you an X51 retrofitted and the additional HP makes you happy...do it.

    Re: X51 (powerkit) graph and info

    Quote:
    Hollli82 said:
    Quote:


    To each his own...Maybe some of us think spending 10k for a set of rims and tires is too much. Some of us will drop 10-15k in an after-market stereo. If 20K gets you an X51 retrofitted and the additional HP makes you happy...do it.



    Very well said.
    After all, GM austin said on the Cayenne board, buying these type of cars is not rationnal at all anyway, so from that point of view, the client sets the limits to whatever he wants relly.

    Re: X51 (powerkit) graph and info

    Thanks, I hadn't read that.

    I've been fortunate enough to drive a C2S and own a C2S-X51.


    I compared the two here.

    Re: X51 (powerkit) graph and info

    Wonder if anyone has results of the C2S w/X51 done at NBR yet? Would be interesting to see how the results vary with the 997GT3 rumoured at less than 7.50sec.

     
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