Anyone have any experience with the two? i wanted to know if the downpipe eliminates all cats and bolts straight up to the silent hi power cat back. It looks as long as the bonez downpipe that eliminates both the precat and main cat so im wondering if this one does too. i can only find like 1 video on this exhaust and it doesnt do justice to the sound quality. ive considered rb rev 2 and dual n1's but im kind of turned off to how heavy they are. anyways any feedback would be awesome!

 

I pursued this setup and ultimately ended up with the Rev II DP. The HKS is near impossible to find, no one online has it and everyone I encountered was not able to obtain it. I don't remember if I found out if it would delete the main cat, almost no DP does. I would worry about actually obtaining the DP first.

 

$282 for the dp
$690 for the exhaust

HKS Downpipe Mazda RX7 Turbo 87-91
HKS Silent Hi Power Exhaust Mazda RX7 Turbo 87-91

 

There's only 2 HKS Master Distributors left in the US. There are no Pro Dealers left in the US that I've been able to find for F-Con products.

If someone other than them sells legit HKS, it means they buy from one of the two or have old stock. I checked both dealer websites for the remaining master distributors.

HKS Silent Power Hi-Power exhaust still available as special order only...
DP is discontinued...

 

for those of you that wants to know how it sounds like, heres a clip for it