NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   3rd Generation Specific (https://www.nopistons.com/3rd-generation-specific-18/)
-   -   Hks Downpipe (https://www.nopistons.com/3rd-generation-specific-18/hks-downpipe-18318/)

RotaryRevolution 06-02-2003 10:36 PM
ive heard that the hks 3in downpipe doesnt flow very well compared to others like it. is what ive been hearing true? does anybody have an hks downpipe?

Srce 06-03-2003 12:00 AM
Get an SS DP. https://www.nopistons.com/forums/pub...#>/biggrin.png

rbrtech 06-03-2003 06:52 AM
yep works fine for us

wraith 06-03-2003 02:35 PM
go to rx7trix.com and look at the difference in the M2 on and the HKS one.

GoRacer 06-03-2003 07:15 PM
It retains the crimp that the precat has. Doesn't flow very well is completely wrong. Doesn't flow as well as a strait through 3" pipe, should be the wording instead. If you have a right hand drive model, you need the crimp.

r_xplicit 06-04-2003 09:13 PM
Originally Posted by GoRacer' date='Jun 3 2003, 06:15 PM
It retains the crimp that the precat has. Doesn't flow very well is completely wrong. Doesn't flow as well as a strait through 3" pipe, should be the wording instead. If you have a right hand drive model, you need the crimp.
well said. this is the point aht i have been trying to make for some time now. the HKS pipe mimics the stock pre cat without the extra internals and heat sheilding. it narrows to almmost 1.65" on the inside.....GO FIGURE......compare it to another and you SHOULD be able to DEDUCE that it DOES NOT FLOW like the other full 3" pipes out there.....


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