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Exhaust/collecter size questions.

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    #1

    Exhaust/collecter size questions.

    So, I guess 3" exhaust for the h22 is the way to go. It produces power and torque throughout the whole power band on a stock motor. My question is if I run a 3" exhaust do I have to upgrade the collector on my downpipe to 3" to see max gains? or is 2.5" ok?

    I have a RS*R header atm with a custom hack down pipe, I believe the collector is 2.5". Was looking around for possibly one of those drag style replica headers or a tri-y but from what im seeing the drag 4-1 makes more power, though idk yet.

    I was thinking of just ordering all the piping online and having a buddy weld it all together with a nice vibrant muffler at the end
    Originally posted by deevergote
    ..It's not cheap to build a fast CB7, especially NA. However, if you're willing to put the money into the car, it's well worth it in the end. There ARE faster cars out there, but some people, like me, want THIS particular car to be fast!...
    Sold to:tanNn2koo,9tAkord,ThrakBarts,nahmo,andrizzle,or anger
    Bought from:93a-lude, bruno8747, soysauce

    1993 H22A cb7 <3 miss you
    04 WRX stg 2 sedan
    Current - 02 WRX stg 2 wagon
    Tags: None
    #2
    2.5 collector for an engine with no power adders is fine.
    Current 2016 Ford F150 XLT Sport
    Past 1990 Accord EX Sedan
    Past 1990 Accord LX Sedan
    Past 1991 Accord LX Sedan
    Past 1993 Accord LX Wagon
    Current 1991 Accord EX Wagon

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      #3
      the thing is you want the collector to be smaller but not small enough where it will restrict flow but not big enough to hurt exhaust velocity.

      2.5" collector should suffice.
      I <3 G60.

      0.5mm Oversized Stainless valves and bronze guides available. Pm me please.

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