will dc2 b18 mani give more power than b16??


an OEM 98 spec DC2 mani will is better than an OEM EK9 mani, they're straight fit but i wouldnt bother using the heatsheild.
 
tama666 said:
give more power, no.
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Sorry you are wrong there mate, they give a good power increase!
The OEM EK9 is very restrictive IMO.

Bear's EK9 said:
how come so many fit them to their ek9's??
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Because they give very good gains for the price over the aftermarket items!

tama666 said:
...for more efficient flow of engine exhaust.
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This is true & mainly down to the fact that they use bigger tube's than the OEM EK9 mani.


The 98spec OEM 4-1 mani is just as good/if not better than some aftermarket ones!
There is a thread on mani's/headders on hear with dyno graphs to prove.:secret:
(ill see if i can find it for you now!)
 
thats wat i thought. thanks Jimbob. dont suppose u know if a b18 sir manifold is the same as b18 type r??
 
My thoughts on exhaust manifolds ["headers"] are that they open and hopefully speed up the flow of hot exhaust gasses exiting the engine -- allowing a cleaner cylinder combustion to take place.

Without a proper tune to the air/fuel mixture after an upgraded exhaust manifold is installed will net few gains over what can be gained from a proper exhaust and ECU tune. Without more air/fuel going into the engine, gains will be minimal.

I have seen cases, after a I/H/E was installed without a tune, where the engine ran very lean. Not good. All these add-on parts need to be adjusted for, especially when upgrading the exhaust and fuel delivery components.
 
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