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Grimmspeed Ported exhaust manifold

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Old Feb 27, 2012, 06:40 PM
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Grimmspeed Ported exhaust manifold

Hi,

anyone had experienced with that specific product?

http://www.grimmspeed.com/catalog/pr...roducts_id=157

I am looking for more low and midrange TQ and they claimed the following:
"As far as gains, 3rd party unrelated Mitsubishi owners have seen ~15 whp/wtq gains, most notably in the low and mid range. You should also expect to see quicker spool up time. "

it is also a nice way to keep it kinda of "stock" when you are visiting your dealership...

Mart
Old Feb 27, 2012, 07:31 PM
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Holy expensive porting! Check out MAP's and PPI's porting too.
Old Feb 28, 2012, 10:29 AM
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grimmspeed is 299$ + core
MAP is 349$ + core

I am unable to locate a dyno sheet for their claims
Old Feb 28, 2012, 10:36 AM
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nice info here:

https://www.evolutionm.net/forums/ev...-map-rev2.html
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