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HKS Hi-Flow arrived!

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Old 04-15-2007, 03:54 PM
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HKS Hi-Power arrived!

UPS delivered my HKS Hi-Power single-outlet exhaust on Friday. This thing is LIGHT. Need to get on a scale myself but other members have recorded 23lbs!!
Thing is beautiful- typical HKS qualitly. Comes with an adjustable Titanium tip. For the cash it's an awesome deal.
I ordered it from HopUp Racing http://www.hopupracing.com/mazdarx8.html
Exellent vendor. $445 for the exhaust and free shipping! By far the cheapest I have found. Excellent communication and they answered all my questions within 12 hours.

I should have the exhaust on within the next 48 hours or less, hopefully.


The awesome box


exhaust!


standard tip


adjustable Titanium tip

Last edited by chickenwafer; 04-16-2007 at 01:26 PM. Reason: spelling
Old 04-15-2007, 03:59 PM
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I am leaning toward this exhaust.
Old 04-15-2007, 04:05 PM
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it's very nice. HKS qualitly, and the lightest Stainless exhaust out there. To get any lighter you have go titanium which is very $$$

Oh yeah, it sounds awesome too. Goto www.youtube.com and search of HKS RX8- it will bring up XDub's vid he has of his HKS Hi-Power. That's what sold me on it.

Last edited by chickenwafer; 04-16-2007 at 01:18 PM.
Old 04-15-2007, 04:09 PM
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yeah, Deedubb kind of sold me already. Anyone have pics from underneath?
Old 04-15-2007, 04:17 PM
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I will try once I have it installed
Old 04-15-2007, 07:54 PM
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Nice,
I'm thinking 'bout one of these too. I tried a search but couldn't find any definitive answer but is the piping on this system stainless steel? I know the muffler is.
Old 04-15-2007, 09:08 PM
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It wil be nice to shine only one tip!
Old 04-15-2007, 09:34 PM
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the pipe is steel, but not polished. It's powdercoated black from the best I can tell. Very durable finish. The muffler, roughly 3" of tubing, and the tip are all 304 Stainless. The tip you can either put on or leave off is titanium (very little magnetic attraction).
Also comes with new gaskets and hardware.

Oh yeah, the hangers are stainless too.
Old 04-15-2007, 10:32 PM
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is this exhaust mainly for FI set-ups or can it be used just as effectively with a NA motor?
Old 04-15-2007, 11:43 PM
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yay! im glad u got it chiken! you wont be dissapointed man!!

is this exhaust mainly for FI set-ups or can it be used just as effectively with a NA motor?
it can be used for both, but it will make a huge difference when your car is force inducted.

now hurry up and put that bad boy on!!
Old 04-16-2007, 02:37 AM
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HKS should pay you rolaties, XDub! You sold me on this exhaust. Well, you and the price. Cheapest RX8 exhaust out there, and made by an extremely reputable company that I'm proud to have on my car.
Can't wait to get it on so I can hear her for the first time!
Old 04-16-2007, 02:47 AM
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How hard is the install on these things?
Old 04-16-2007, 02:52 AM
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has anyone tested this exhaust on a turbo'd 8?
Old 04-16-2007, 02:53 AM
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i would consider this one if i could take only one exhaust tip. i cant stand it not being balanced. but man does that one sound good
Old 04-16-2007, 09:47 AM
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Looks nice, but I think a single exhaust looks funny on an 8 without a lot of body work to the rear bumper.
Old 04-16-2007, 10:21 AM
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How hard is the install on these things?
Easier than installing an exhaust with dual tips. should take no more than 45 minutes tops

has anyone tested this exhaust on a turbo'd 8?
yes it has been tested and gained an additional 7 whp on average vs. a dual tip aftermarket exhaust.

Looks nice, but I think a single exhaust looks funny on an 8 without a lot of body work to the rear bumper.
if u guys can get over that dual tip crap than this is the exhaust for you. This car does not need dual tips. thats just excess weight.
Old 04-16-2007, 10:56 AM
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anyone have any shots of this installed on a car with the Mazdaspeed rear under body spoiler? I am very tempted to swap this with my RB. Mainly because of that amazing sound and weight savings. Xdeedub, did you say that it also has a higher power gain over dual exhaust on a N/A rx8?
Old 04-16-2007, 11:03 AM
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Is it possible to attach this with the B&B catless midpipe?
Old 04-16-2007, 11:09 AM
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how much louder than the legamax can't really tell from the video but i justt assume its louder.
Old 04-16-2007, 11:30 AM
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anyone have any shots of this installed on a car with the Mazdaspeed rear under body spoiler? I am very tempted to swap this with my RB. Mainly because of that amazing sound and weight savings. Xdeedub, did you say that it also has a higher power gain over dual exhaust on a N/A rx8?
i have no pics of it installed on MS kit. but as far as power gains on a N/A rx8, they will be about as good as the hks legamax dual tip exhaust. It will not make anymore power than that. But when used in conjunction with a turbo kit, you will see notice a difference.

Is it possible to attach this with the B&B catless midpipe?
there shouldnt be a problem with that. The RP supercat fit fine with it. I'm running the stock cat with it as well.

how much louder than the legamax can't really tell from the video but i justt assume its louder.
it is louder by a few decibels.

Here are some comparison videos:

http://www.youtube.com/watch?v=mZ1ZgIGeE_c
this is the old Legamax exhaust

http://www.youtube.com/watch?v=mZ1ZgIGeE_c
this is the new hi flow exhaust in the same exact location

and hereis a new video of it on the dyno on a 6th gear run toppin out at 160mph+
http://www.youtube.com/watch?v=mZ1ZgIGeE_c
Old 04-16-2007, 11:39 AM
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grats on the exhaust chicken, can't wait to see pics of it installed.
Old 04-16-2007, 11:45 AM
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Originally Posted by XDEEDUBBX
yes it has been tested and gained an additional 7 whp on average vs. a dual tip aftermarket exhaust.
Is this in reguards to the legamax?

This is a deceptive statement, in theory a dual tip exhaust with the same dia. pipe will provide better flow and better gains in a turbo application.
Old 04-16-2007, 11:53 AM
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Originally Posted by Digital_Damage
Is this in reguards to the legamax?

This is a deceptive statement, in theory a dual tip exhaust with the same dia. pipe will provide better flow and better gains in a turbo application.
That test was done with a forum member's Turbo'd 8. The exhaust he had on for that test was not the Legamax. I can't recall exactly what he had prior to the HKS hi-flo, but I'm sure XdeedubbX will remember.
Old 04-16-2007, 11:56 AM
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does anyone have a sound clip of this single exhaust with RP-Supercat? Im deciding btw this exhaust and RB bc i dont wont a suuuper loud exhaust sound...
Old 04-16-2007, 12:18 PM
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Originally Posted by Digital_Damage
Is this in reguards to the legamax?

This is a deceptive statement, in theory a dual tip exhaust with the same dia. pipe will provide better flow and better gains in a turbo application.
it was done with a jic titanium exhaust, we've discussed this before so be done with it already. Sometimes theory is not always what applies in actuality. Look at my sig..hahaha


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