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Interesting find with the H22A7 exhaust

 
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Old 12-15-2016, 10:57 PM
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Interesting find with the H22A7 exhaust

I run sanctioned racing and I'm my division cars must use stock parts only. I have a prelude with the h22a. I found out (had to order from overseas from eBay) the the h22a7 accord type r header is different. Maybe not a night and day difference but I see slight gains here. I also have ordered the downpipe since the header is a few inches longer but haven't recieved it yet. Width of the JDM header Width of the UK header Vertical measurement of JDM http://i1089.photobucket.com/albums/..._200232496.jpg Vertical measurement of UK http://i1089.photobucket.com/albums/..._191836861.jpg Outside pipe size of JDM http://i1089.photobucket.com/albums/..._191255662.jpg Outside pipe size of UK http://i1089.photobucket.com/albums/..._191343081.jpg
In conclusion, I expect to see gains even though they may be minimal with 1mm wider 2 mm taller (rounded) primary. As well as the straight pipe vs the curved will give more efficient flow.
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Old 12-16-2016, 01:52 AM
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Re: Interesting find with the H22A7 exhaust

wont help you much if you attach it to stock 2" downpipe.

Type R/S had 2,25" exhaust
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