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Old 4 Weeks Ago   #1
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What branch is best

I want to fit new branch on car, can get 4-1 branch will that be better thank stock 4-2-1 manifold?
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Old 4 Weeks Ago   #2
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Re: What branch is best

4-2-1 is normally an 'upgrade'
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Old 4 Weeks Ago   #3
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Re: What branch is best

Wouldn't the top end be better? Have lifted the compression ratio and ported head. So wouldn't it give a few extra ponies. Currently revving car to 6k but loses alot of power after 5k revs. Also think car has air or fuel starvation. So any help, will help allot.
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Old 4 Days Ago   #4
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Re: What branch is best

after market 4-2-1 would be better for road and 6-7000rpm but get yours down rollers to sort out fuel before you do damage if its running lean
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