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-   Series I Aftermarket Performance Modifications (https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/)
-   -   BHR Midpipe (https://www.rx8club.com/series-i-aftermarket-performance-modifications-23/bhr-midpipe-170605/)

zenrx8 09-03-2010 05:44 AM

Charles just sent me something long and hard:naughty:

TheWulf 09-03-2010 09:34 AM


Originally Posted by azzuro (Post 3698665)
What does that mean? What should it be coming from?

A string trimmer? :lol:


Originally Posted by azzuro (Post 3698665)
Also for reference what cat-back are you using?

Me? Stock :-/
I had an ExoticSpeed S1-T but got rid of it because it was too loud.
Currently looking at a MazdaSpeed V2.

dondo 09-03-2010 11:13 AM

^ Mazdaspeed V2 + BHR MP = <3

9krpmrx8 09-03-2010 11:37 AM

Mazdaspeed is nice but I must say that our local MS owner had the mufflers crack at the welds with no rust or anything so I personally doubt it's build quality. It may have just been one bad system though I guess.

dondo 09-03-2010 11:37 AM


Originally Posted by 9krpmrx8 (Post 3699356)
Mazdaspeed is nice but I must say that our local MS owner had the mufflers crack at the welds with no rust or anything so I personally doubt it's build quality. It may have just been one bad system though I guess.

been running mine for years (bought used) with no problems. :yesnod:

9krpmrx8 09-03-2010 11:44 AM


Originally Posted by dondo (Post 3699357)
been running mine for years (bought used) with no problems. :yesnod:

Yeah I was surprised too since this one only has a couple of years use from someone who doe snot drive that hard.

Easy_E1 09-03-2010 12:02 PM


Originally Posted by Charles R. Hill (Post 3699395)
I know of two other units that cracked in the exact same fashion.

Mazdamaniacs and mine.

Cattywampus 09-03-2010 09:24 PM

Midpipe will be at my front door on 9/8. Can't wait. Driving a turbo rotary with a stock cat blows. I'm ready to get my power back and then some. Will post honest impression and I promise to do so without drinking the popular BHR kool-aid during my report.

9krpmrx8 09-03-2010 09:57 PM


Originally Posted by Charles R. Hill (Post 3699395)
I know of two other units that cracked in the exact same fashion.

Well I guess it does speak for the quality then. I was surprised to see rust at the welds since here in Texas rust is a non issue.


Originally Posted by police34 (Post 3700030)
Midpipe will be at my front door on 9/8. Can't wait. Driving a turbo rotary with a stock cat blows. I'm ready to get my power back and then some. Will post honest impression and I promise to do so without drinking the popular BHR kool-aid during my report.

Mine is in Texas and I hope to God I get it tomorrow :lol:

RIWWP 09-04-2010 09:39 AM

Starting installation of mine.... pics and videos will be up soon.

RIWWP 09-04-2010 03:12 PM

Midpipe installed!

I can't say trouble free though. I need to talk with Ray to figure out what I did wrong with the rear mounting hardware, or if something was missing that was supposed to be included.

Fitment is perfect however. Just nuts and bolts issue.

Front fitment:
[IMG]http://i725.photobucket.com/albums/w...r/IMAG0044.jpg[/IMG]

Not posting my pic of the rear considering it's not done right yet :)

The piece of broken resonator from one of the borrowed prototypes (Zelse's) from last winter isn't anywhere in sight in my cat-back, so it still rattles around somewhere. Probably need to pull the whole cat back to get it out, so it will probably be there until I upgrade to a lighter cat-back.

I definitely have more power from 5k to 8k. Low end I am still dealing with the pre-existing lack of power that I believe to be my O2 sensor. I just found a O2 sensor tool at Advance that should work perfect for getting the old off and the new on.

The sound is what I remember. Completely stock sounding (rest of the system is stock) below ~70% load. WOT adds some of the rotary music to the air without being raspy.

Jedi54 09-04-2010 03:21 PM

you n00b RIWWP, what happened with the rear? ;)

Jedi54 09-04-2010 03:50 PM

Ray, that drop down should soon be replaced with, "add BHR catback" ;)

RIWWP 09-04-2010 03:54 PM

Yeah, bolts just not threaded far enough, should need extra washers, shorter bolts, combination of above, etc... Just doesn't actually start gripping the 2 sides to hold them together even at max threading. Threaded the nuts onto the non-threaded area trying, so they might be garbage now :) Might be savable though. I'll pass them off to Ray in 12 days to see if we can avoid wasting them.

I mcguyver'ed it up to get to the hardware store for some alternate hardware.

Got home, talked to Ray, put the car on jack stands, pulled off my jury-rig hardware, then found out I got the wrong thread pitch somehow.... so back to the store :)


Trying to figure out how to replace my O2 sensor without getting burned is like trying to drive under the speed limit everywhere in my 8.


It just aint gonna happen. Why did they have to put that connector there!?!?!

Just gonna do that part tomorrow I guess, let it cool overnight.

Jedi54 09-04-2010 04:29 PM

Why would I place a web order? I prefer to call the bat phone. :)

Same category as Phil? Ill take that as a compliment. I think. :lol2:

RIWWP 09-04-2010 04:57 PM


Originally Posted by Charles R. Hill (Post 3700662)
Keep them in case you get an aftermarket cat-back in the future (?).

I torqued the nuts enough that I don't have the tools to un-torque them, since the other end is threaded too, and it comes free first. I think the nuts started threading the non-threaded part of the bolt.

http://i725.photobucket.com/albums/w...r/IMAG0045.jpg

Once you release a cat-back that I can buy, I will still need to get these disassembled somehow to be usable :)

RotaryMachineRx 09-04-2010 09:31 PM

bench vise and an impact, depending on how tight it is actually on there could ruin the threads though... lube it up first

dannobre 09-04-2010 09:51 PM

If you have enough thread for 2 nuts you can lock them together and then take off the single one

If you put the shoulder in a vice you should be able to get it off without screwing up the threads

RIWWP 09-04-2010 10:21 PM


Originally Posted by RotaryMachineRx (Post 3700870)
bench vise and an impact, depending on how tight it is actually on there could ruin the threads though... lube it up first

Mind lending yours? :)

All I have are hand tools.


Originally Posted by dannobre (Post 3700887)
If you have enough thread for 2 nuts you can lock them together and then take off the single one

I can't bring to mind what you are talking about....



I'm not saying they are unrecoverable, just that I don't believe I can separate them given the simple hand tools I have. Hence, when I get to BHR HQ on my drive to Sevenstock in 12 days, I will hand the hardware over to Ray, he can work his magic, and since I can't use them, he re-use them as he sees fit with a future project, someone else's pipe, or whatnot.

Rather than tossing out what I hear is a rather expensive chunk of hardware. (expensive for what it does)

zenrx8 09-05-2010 11:34 AM


Originally Posted by Charles R. Hill (Post 3700628)
It seems the OEM and MazdaSpeed cat-backs are going to need alternate rear hardware (which I already have available) because they each use the same thin stamped steel flanges. Other aftermarket cat-backs tend to use thicker, Water-Jetted, flanges and that is what our pipe was designed to accomodate. Looks like a new pull-down on our webpage for ordering the BHR Midpipe will be needed, asking the question "OEM/MazdaSpeed cat-back currently in use?".

Good to know; I'm swapping to a Borla with the new midpipe anyway.

RotaryMachineRx 09-05-2010 01:11 PM


Originally Posted by RIWWP (Post 3700910)
Mind lending yours? :)

All I have are hand tools.

Haha, if you think it's worth the drive/flight I'd be more than happy to harbor a club member in need... but You'd have to help with my turbo install

azlizard 09-05-2010 01:27 PM

Got mine installed yesterday, sounds nice. I have the stock catback, very little noise increse until you step on it. Not saying it gets really loud when you do this, just saying you can hear when you do. :)

RIWWP 09-05-2010 02:36 PM

Alright, I got some video. Neither is very good, since they are both from my phone, which doesn't do all that great on the audio pickup. The first one it starts overwhelming the mic, but it's in place, no load revving, with the phone back by the tips.

http://www.youtube.com/watch?v=liBfAdedA8Q


The second video clip is a bit over 4 minutes long, but has a variety of speeds, loads, revs, etc which attempt to show a bigger range of the sound it makes when paired with the rest of the stock stuff.

Lots of road and wind noise, sorry.

http://www.youtube.com/watch?v=d6ZTcDnCq9w

Easy_E1 09-05-2010 06:38 PM

Very nice RIWWP. Liked the second one, with the commentary. Skidmarks into the wall.

So what do you think of the sound?

Leandrys 09-05-2010 06:41 PM

Honnestly, this is quite noisy for a catless RX8 with stock header and stock catback, but maybe the bad quality of the videos makes it louder/different.


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