single rounded, or open neck
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From: IN MY P1 (ESSEX)
single rounded, or open neck
single rounded entrance, or open neck downpipe?
i have heard that a free flowing single round enterance can be better as it reduces boost spiking? is this correct?
i have heard that a free flowing single round enterance can be better as it reduces boost spiking? is this correct?
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From: The Rock
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I've found the Open neck to be worthwhile.
I found it very hard to control boost with the magnex twin dump and an AVC-R boost controller. I've got the H&S open neck now. The AVC-R can control boost without any problem now.
I found it very hard to control boost with the magnex twin dump and an AVC-R boost controller. I've got the H&S open neck now. The AVC-R can control boost without any problem now.
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From: Founder of surreyscoobies.co.uk
I have an HKS closed neck DP with no problems at all and the std heatsheild bolts straight back on with no cutting involved, most people I have spoken to go for the open neck DP but i cant see why as hks make them like this for a reason 
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