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Next version of Cayman/Boxster will include turbo flat 4

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Old 05-20-2015, 07:50 PM
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It's my understanding that no one has been able to crack open the stock ECU on the current gen Caymans. If the same holds true of the turbo engines that would be super disappointing. Half the fun of a boosted car is the free hp you can get with a tune.
Old 05-21-2015, 04:49 AM
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Originally Posted by Mr.E.G.
It's my understanding that no one has been able to crack open the stock ECU on the current gen Caymans. If the same holds true of the turbo engines that would be super disappointing. Half the fun of a boosted car is the free hp you can get with a tune.
There actually are some tuning solutions for 991 turbo cars... maybe it's because tuners are working that much harder on cracking those (more gains to be had, wealthier owners). There are also some reflash solutions for the N/A 981 cars, but they involve sending your ECU to a shop overseas and getting a reflashed ECU back 3 weeks later. At that point your ECU is basically closed. It can never be tampered with again - no dealer reflashes at all or the ECU will be bricked..

Part of me wants to think the next-gen Porsche turbo cars are going to be a tuner's paradise - and if it were any other manufacturer, that would probably be true. Knowing what I know about Porsche though, they will probably be locked down harder than Fort Knox. Yes, there will be gains to had from intakes and exhausts, but these will be minimal compared to what you could expect from a full turbo reflash.
Old 05-21-2015, 05:48 AM
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Originally Posted by Sebring AP1
The mercedes CLA AMG is a turbo 4 making pretty much 400, if not more horsepower. What makes you think Porsche couldn't do it?
How does that motor's rated 355hp all of a sudden turn into 400 or more?

Of course Porsche could get 400 or more hp out of a small four cylinder engine. But without hybrid assist for down low you're gonna have a lot of lag and crap throttle response.
Old 05-21-2015, 06:18 AM
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Originally Posted by WolfpackS2k
Originally Posted by Sebring AP1' timestamp='1432152944' post='23619587
The mercedes CLA AMG is a turbo 4 making pretty much 400, if not more horsepower. What makes you think Porsche couldn't do it?
How does that motor's rated 355hp all of a sudden turn into 400 or more?

Of course Porsche could get 400 or more hp out of a small four cylinder engine. But without hybrid assist for down low you're gonna have a lot of lag and crap throttle response.
Don't be too sure about that. The 911 Turbo S makes peak torque (487 ft-lb) at 1950 rpms. The newer turbo systems have done an amazing job at getting rid of lag.
Old 05-21-2015, 07:01 AM
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The 911 turbo's engine size of 3.8 liters has a lot to do with that. It's pretty reasonable to assume that any boxer 4 engines Porsche builds will be 2.5 liters max, considerably smaller.
Old 05-21-2015, 07:14 AM
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Right, so there won't be nearly as much torque or horsepower, but there are no technical reasons why it couldn't be tuned to have a similar torque curve. 2.5L is large for a 4 cylinder and combined with modern turbo tech, it could have tons of torque with little lag.
Old 05-21-2015, 07:29 AM
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I've never heard a turbo 4 banger sound anywhere close to as good as a tightly wound NA Porsche flat six.

If you want horsepower/torque, go buy a Vette. People buy P-cars for the sound, feel, quality, etc. A critical part of that IMHO is the sweet revving flat six sound.
Old 05-21-2015, 07:31 AM
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Originally Posted by deepbluejh
Originally Posted by WolfpackS2k' timestamp='1432216080' post='23620379
[quote name='Sebring AP1' timestamp='1432152944' post='23619587']
The mercedes CLA AMG is a turbo 4 making pretty much 400, if not more horsepower. What makes you think Porsche couldn't do it?
How does that motor's rated 355hp all of a sudden turn into 400 or more?

Of course Porsche could get 400 or more hp out of a small four cylinder engine. But without hybrid assist for down low you're gonna have a lot of lag and crap throttle response.
Don't be too sure about that. The 911 Turbo S makes peak torque (487 ft-lb) at 1950 rpms. The newer turbo systems have done an amazing job at getting rid of lag.
[/quote]

You are mis-equating lag with power delivery. Lag is the time it takes the turbo to spool when you put your foot down, it has nothing to do with peak torque.
Old 05-21-2015, 08:34 AM
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^thank you

^^amen!
Old 05-21-2015, 09:25 AM
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Originally Posted by WolfpackS2k
Originally Posted by Sebring AP1' timestamp='1432152944' post='23619587
The mercedes CLA AMG is a turbo 4 making pretty much 400, if not more horsepower. What makes you think Porsche couldn't do it?
How does that motor's rated 355hp all of a sudden turn into 400 or more?

Of course Porsche could get 400 or more hp out of a small four cylinder engine. But without hybrid assist for down low you're gonna have a lot of lag and crap throttle response.
My bad, I'm clearly not a big Mercede's follower.

I just remember that it had a ridiculous 0-60 so figured it had to have at least power figures in that vicinity. Thanks for the correction.


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