What kinda results have ppl had with upgrading their headers to after market 4-2-1 power and price wise.
hey.
I've got some RS*Rs 4-2-1s on my CRX - i can't tell you dyno power difference as I haven't done a before and after comparison but I can tell you that down 400m my top speed improved from 138km/h to 145km/h - so yeah - they are improving something - and mine cost $700 second hand few years ago.
i dont know the price on them yet, sourcing them from A1 high performance. they are in perth, also getting a short runner intake manifold its 600 buks inc GST
Just something you may want to consider. The NA small 4 cylinder really struggles alot for torque. The header is the best and cheapest place to increase this without opening the engine up, so it might be wise to spend here where it really matters.
any one heard or Hytech i saw some dyno test on a B16a and power went from stock manifold 138hp to 189hp with the hytech header its unbeliveble!!!! they cost round 1350 US dollars but
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