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Wales
by Joske Vermeule, September 1
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Forums39
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Jun 14th, 2026
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Joined: Dec 2014
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OP
L - Learner Plates On
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Joined: Jul 2007
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Member of the Inner Circle
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Member of the Inner Circle
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Posts: 27,840 Likes: 764 |
Lots of poney struggles there then.
JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"
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Joined: Apr 2012
Posts: 5,013 Likes: 32
Charter Member
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Charter Member
Joined: Apr 2012
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I'm not sure what I'm looking at there (I'm not an engineer)  But is that suggesting that the output of the 3.7 is higher than the spec from the factory?
+8 4.8
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Neilda,
it shows exactly that. The engine has about the same power as it has in the Mustang, so 280hp are pure marketing. You can nicely see the power increase at 3500rpm, where the variable valve timing sets in. I thought this is a good reference for those who look for even more power. Further tuning should show at least 320hp to make sense.
Regards,
Ex-Roadster 3.7, now P6
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Joined: Jan 2013
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Talk Morgan Expert
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Talk Morgan Expert
Joined: Jan 2013
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I've witnessed a standard 3.7 years been driven hard since day 1 make 319bhp on very reputable rollers
Instagram - WilliamsMotorsportuk
- Lawrie Mills(Chunkylozza)
Youtube - ChunkyLozza
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Joined: Feb 2011
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Member of the Inner Circle
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Member of the Inner Circle
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Two of the standard 3.7s dyno tested last year at our TM dyno day were registering very similar outputs. Around 300bhp
Last edited by Jays; 29/03/15 10:28 AM.
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Joined: Dec 2014
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Lawrie, thats interesting.
What is Aero racing doing then to get 320hp with their ARV6?
Ex-Roadster 3.7, now P6
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Joined: May 2011
Posts: 4,896
Drive on the Wild Side Part of the Furniture
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Drive on the Wild Side Part of the Furniture
Joined: May 2011
Posts: 4,896 |
I believe that the new ECU gives slightly more and from my driving experience a smoother curve at the lower end. If you put a sports exhaust on you should gain at least 5% increase.
Adrian
Buggered Off, to a modern none leaky car, heart's still ticking
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Joined: May 2011
Posts: 1,245 Likes: 2
Has a lot to Say!
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Has a lot to Say!
Joined: May 2011
Posts: 1,245 Likes: 2 |
I have to agree regarding the "marketing" and I suspect that the MMC claimed BHP is downrated to avoid awkward questions regarding the +8 pricing (sorry Peter!). After owning 3 Roadster 3.0's, the performance of the 3.7 is in another league IMHO.
Don.
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Joined: Jul 2009
Posts: 1,127
Has a lot to Say!
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Has a lot to Say!
Joined: Jul 2009
Posts: 1,127 |
 a very good result! I can only confirm all that has ben said above - see the rolling road diagram of my (former) "the beauty AND the beast" attached here...  (i have to admit: that result was after some "fettling" with several areas of the car...  )
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![IMAG0476[1].jpg](https://www.talkmorgan.com/gallery/26/full/23976.jpg "IMAG0476[1].jpg")
