i know i want a 4-2-1 as i want benefits at mid range rather than a peaky top end.
i know that reducing restrictions here see the restrictions further down the pipe affecting power.
i also know that at the end of the header (collector) end the bracket is to be fitted onto a 2 1/2" to 3" catalyst/decat pipe.
i want a quiet exhaust that gives me more power mid rev range.
if i
get a new manifold, get a larger/freer flowing catalyst, reducing slightly to a smaller b pipe into a standard/quieter backbox
will i reap the rewards at mid range? as the amount of restriction is only there when the flow is very high. so in the mid range where the flow is lower there will be less restriction. therefore getting the rewards of powerful mid range, quiet peformance, with only slight restriction in the higher reaches of the rev range.
also ive heard that for best silence per hp increase that the main restriction wants to be nearer to the end of the exhaust system.
so i need to find
4-2-1 manifold
freer flowing catalyst-expensive or modify the old/9 year old catalyst i have
find a larger b pipe
slightly modify the tail box for a bit more flow (its 2 1/4 pipe in and out anyway)
find brackets/connectors to fit the lot together.
i dont mind if its stainless but i know that that increases noise but only when being revved.
i just want something i can still go places. i know it will be really loud on vtec anyway!!!
i know that reducing restrictions here see the restrictions further down the pipe affecting power.
i also know that at the end of the header (collector) end the bracket is to be fitted onto a 2 1/2" to 3" catalyst/decat pipe.
i want a quiet exhaust that gives me more power mid rev range.
if i
get a new manifold, get a larger/freer flowing catalyst, reducing slightly to a smaller b pipe into a standard/quieter backbox
will i reap the rewards at mid range? as the amount of restriction is only there when the flow is very high. so in the mid range where the flow is lower there will be less restriction. therefore getting the rewards of powerful mid range, quiet peformance, with only slight restriction in the higher reaches of the rev range.
also ive heard that for best silence per hp increase that the main restriction wants to be nearer to the end of the exhaust system.
so i need to find
4-2-1 manifold
freer flowing catalyst-expensive or modify the old/9 year old catalyst i have
find a larger b pipe
slightly modify the tail box for a bit more flow (its 2 1/4 pipe in and out anyway)
find brackets/connectors to fit the lot together.
i dont mind if its stainless but i know that that increases noise but only when being revved.
i just want something i can still go places. i know it will be really loud on vtec anyway!!!