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Hey Jamie!! Welcome! Glad to see ya join us ;)


lil devil... when Vern Dynoed a few weeks ago..he was having a hard time getting the Dyno to read his Tach signal... so the HP number is WAY off as HP is just a function of torque and RPM...

Vern is about the strongest running N/A 6M that I have heard of.

I've spoken to a couple of Turboed 6M people and 80 to 120 hp is about the average increase...depending on boost and supporting mods.
 

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I've heard anywhere from 12 to 20%... I tend to use the 20% number... it may end up being high, but when using that number to figure for fuel needs and the like, it makes the error towards the safer side...
 

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SilverMk2 said:
6Ms definetly make more power and torque than a 5M does. However, I do feel that they absolutely do not make 190 crank hp when installed in a US spec car, like everyone makes an assumption of. Making 18% more power (190 vs 161) with only ~7% (2.8 vs 3.0) more displacement doesn't seem right, especially on so similar of a motor. Given that in Japan a 5M in Japan is 175 hp a 6M would make 8% more power than a JDM 5M. I would say a 6M completely stock would be a 175 hp, 180 tops. These #s would agree with the low 150 rwhp #s on relatively stock 6Ms with a few miles on them.
You do have a good point, but there is one thing your missing. The 6M ECU is optimized for the added displacement AND has much more aggressive timing and fuel maps. I think the lack of those two things contribute to the lesser amount of horsepower that is seen when ya drop a 6M into a 5M.
 
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