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Since we don't have Fit RB1 intake manifolds here in Poland I tried porting an RB0 one since from what I heard its the same on the inside as the 1.5 Fit one. I'll try it on the car and let you all know how it performs. If any of you have done a simillar thing tell me in the comments!

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Would be very interesting to see the result, as same here in UK, can get these easily. I'm sure there is a post on here from someone who did this, but it's not backed up with any dyno, would you go down this route?
 

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There was a guy on the UK Facebook page who had one fitted. His butt dyno afterwards described the same 'gains' as the ge8 mani. I measured the runners when i fitted mine and they are the same on the stock z and ge8 mani. The only difference is the helm holtz chamber which this mani your using has so should feel some extra torqu in the 3 to 4k range and a freer top end.
 

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There was a guy on the UK Facebook page who had one fitted. His butt dyno afterwards described the same 'gains' as the ge8 mani. I measured the runners when i fitted mine and they are the same on the stock z and ge8 mani. The only difference is the helm holtz chamber which this mani your using has so should feel some extra torqu in the 3 to 4k range and a freer top end.
Excellent news if that's the case, I wonder what the difference between an rb0 and rb1 is then... Did you port it out at all or just bolt straight on?
 

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Bolt on mine was off a ge8.
The entry to the plenum is different on the rb0 from the civic, it needs small amount of grinding, apparently it is more oval.

There doesn't appear to be any difference other than that. I think the rb0-004 is the correct equivalent of the rb1. Just the plenum entry modified and your good to go.
 

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