I just received my Bonez Supercat in the mail today from RP, and confirmed the rumor that they have changed the style of the cat unit... it's now smaller and has a heat shield on it, but still no hanger though. I'll be installing it on saturday and I'll report back on sound, performance, etc.

Pics are below...

I forgot to add... this new unit weighed in at 11lbs on my fairly accurate digital scale... it's amazingly light.

i was told by them way back when that the old one was a bonez design... so what gives?

is it still a metallic cat?

i was told by them way back when that the old one was a bonez design... so what gives?

is it still a metallic cat?

Yeah... the older one is a Bonez as well... just a different design. And yes, the elements are still metallic.

I just received my Bonez Supercat in the mail today from RP, and confirmed the rumor that they have changed the style of the cat unit... it's now smaller and has a heat shield on it, but still no hanger though. I'll be installing it on saturday and I'll report back on sound, performance, etc.

Pics are below...
I'm looking forward to hearing it.

Ah still no hanger? Why not??

I wish they would add an O2 bung ahead of the cat also.

I think you will like it. :yesnod: Wonder how the flow is compared to the old design!

I have some extra stainless hangers, both in OE-style or a lower cost hook-style

they're a bit pricey, but I recommend the flanged O2 sensor port from Burns Stainless if you want to add one for an O2 meter, just drill the hole slap it on and weld the flange, much easier cleaner and smoother than the usual inserted type

http://burnsstainless.com/Hardware/Tabs-O2-Rings/tabs-o2-rings.html#O2 Sensor Rings

that piece looks great, be sure to give us your review as soon as you install it.

do you have the temperature range for the catalyst

how many cells ???

Great to see the new design, too bad about the lack of a hanger but I guess it's not a big deal to tack one on.

Can't wait to hear a report on the sound.

So to sum up the cat options:
RP has a Bonze cat
RX7Store has a magnaflow cat
Any one know what the brand SR cat uses??

Great to see the new design, too bad about the lack of a hanger but I guess it's not a big deal to tack one on.

Can't wait to hear a report on the sound.

So to sum up the cat options:
RP has a Bonze cat
RX7Store has a magnaflow cat
Any one know what the brand SR cat uses??

I went with the RP because it's a Bonez- they make them for the RX7 so I know it will handle the rotary's heat. I also have yet to hear of one failing, while I've heard of at least two of the SR cat's failing as well as the one that CZ sells.

I'll record some audio/video clips this weekend for y'all...

Ah still no hanger? Why not??

its not needed

^^^
Do you have the RP cat and not need it on yours?

^^^
Do you have the RP cat and not need it on yours?

yes and yes

What cat back system do you have?

I was of that opinion at the time that I may have also needed a hanger because of the weight of the OEM cat back. Now that I have the tanabe I question if it's necessary with the weight reduction.

Which tanabe exhaust do you have? And how much does it weigh Red Devil?

Those welds look nice.

What cat back system do you have?



OEM

Really weird that mine always slapped the undercarriage brace and yours doesn't. That's why I had to get a hanger...go figure...

I have the Super Hyper Medallion Exhaust...I don't have the specific weight, but from holding both I'd guess it's ~10-12lbs lighter.

^^^
i have the RP cat, and didn't need a hanger. Its sitting very sturdy, and has been in for almost a year now.

Really weird that mine always slapped the undercarriage brace and yours doesn't. That's why I had to get a hanger...go figure...

I have the Super Hyper Medallion Exhaust...I don't have the specific weight, but from holding both I'd guess it's ~10-12lbs lighter.


same here

must be some manufacturing differences somewhere... mine is not even remotely close to hitting anything

you have a bracket mount at the manifold up where the engine tranny mate together, a mount at the rear diff, and a non-rigid ball seat connection between the two points where the midpipe and exhaust mate together. If you don't think the pipes are flexing about that ball seat connection and fatigue cycling some part of the system you're mistaken.

We're only talking about hanger that adds almost no weight and on a $300 - $400 retail part might add another $10 to supply and install. I'm sorry, that's just dumb. I wouldn't even do that on a lightweight max race system.

I have a rmagic supercat
cat is dead


do you know where I can buy the bonez cat (only the cat no the full supercat system)

I look on the web and find nothing about bonez compagny

I believe that's their own brand name spin-off

I went with the RP because it's a Bonez- they make them for the RX7 so I know it will handle the rotary's heat. I also have yet to hear of one failing, while I've heard of at least two of the SR cat's failing as well as the one that CZ sells. For what it's worth I melted my RP cat--but I have a turbo. And I also could use that hanger.
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Cat this cat that, lol...I'm a bit lost.

This thing looks like a mid-pipe and NOT a high flow cat...is that right? I'm sorry, but I hear catback (which means exhaust muffler)...cat, midpipe...etc and I'm lost in the terminology.

I'd rather go with a high flow catalytic converter (cat?) than a midpipe (no-cat) personally to keep things free from CEL's and the GOBment's scrutiny.

don't kid yourself, you can burn up any cat converter ...

Didn't Adrian loose his RP cat on the turbo also?

Mine is holding up nicely - and I have the very first one they sold to the public.

don't kid yourself, you can burn up any cat converter ...Sure. G8rboy said he never heard of one burning so I thought I'd let him know at least one did. I never said it was RP's fault.

I have the very first one they sold to the public.Oh yeah? Well the one I toasted was a preproduction prototype that also had a resonator. So neener neener. :)
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Didn't Adrian loose his RP cat on the turbo also?

Yes.

Cat this cat that, lol...I'm a bit lost.

This thing looks like a mid-pipe and NOT a high flow cat...is that right? I'm sorry, but I hear catback (which means exhaust muffler)...cat, midpipe...etc and I'm lost in the terminology.

I'd rather go with a high flow catalytic converter (cat?) than a midpipe (no-cat) personally to keep things free from CEL's and the GOBment's scrutiny.

This is a high flow cat.. not a race pipe. You're right though... the cat unit is so small compared to the 3" piping it looks like a resonated race pipe, but I can assure you there are catalyst elements in it.

Oh yeah? Well the one I toasted was a preproduction prototype that also had a resonator. So neener neener. :)LOL - maybe they changed something after your experience? ;)

LOL - maybe they changed something after your experience? ;)Hard to say. They actually made the prototype for in-house testing, then dropped it deciding the resonator didn't make much of a difference. Last year when I called I asked if they could make a cat w/resonator and they sold me their prototype. With the resonator it definitely needed a hanger. It would constantly rub against the rear cross brace.
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I didn't mean anything except that you can burn up any cat converter, I wasn't referring to anyone's particular experience with a given brand, it's just a general statement.

This is a high flow cat.. not a race pipe. You're right though... the cat unit is so small compared to the 3" piping it looks like a resonated race pipe, but I can assure you there are catalyst elements in it.

Thanks for the answer, do you know if this will toss a CEL? I know it's not always the same on each 8 but should we expect it to toss it on, gain some HP and sound, and move on or will this force you into driving with a CEL on all the time.

I

dude, it's a cat converter, it's not going to throw a CEL unless it goes bad

update... I installed the new Supercat (as well as new spark plugs and oil change) this evening and took a short spin before my Gators whooped up on the Hoyas.

First impressions... it's loud... but I love it. With the Greddy SP2, it sounds like a friggin' race car at WOT. Even partial throttle it's way more aggressive. As for performance, it seems to rev up from 6k-9k much faster. While the streets were still wet from some light snow earlier, tonight was the first time I got the rear end to fishtail in 3rd that dramatically (and I was only at 5k rpm or so when I gunned it). I had to get my ass back home to watch my game, so I'll be taking it for some serious runs tomorrow and I'll try to get a vid or sound clip.

Installation notes:

The O2 sensor is a standard 22mm, so I was able to buy a specialized O2 sensor socket (looks like a normal socket, but has a slot for the wires to slide through) that worked like a charm. After reading that some people f'd up their $300 sensor, this is a smart $8 investment.

As for the hanger... I don't see this thing ever being jarred hard enough to bang the undercarriage or any of the braces. After I bolted it up, I tried to push it around to see how much play was in it, and it barely moved a 1/2" either way. It's still early, but so far I don't see a need for the additional brace.

Other stuff: The braces have 12mm bolts, the bolts/nuts on the header and exhaust side of the cat are 14mm. The O2 sensor is 22mm, and the tiny nuts on the O2 sensor bracket are 10mm. I used silicone spray on the nuts and bolts about an hour before the install, and also on the rubber hanger, and had zero problems removing anything. This was a very easy install... it actually took me longer to change my plugs than change out the cat (damn front rotor trailing plug is a PITA!).

PM me if anyone has questions about the install...

...and GO GATORS!!!!

, tonight was the first time I got the rear end to fishtail in 3rd that dramatically (and I was only at 5k rpm or so when I gunned it).


You were turning your wheel right?

You were turning your wheel right?

No... I do that all the time : ). This was a straight line acceleration... the roads were wet, and my snow tires are a few years old, but that had never happened in 3rd before. Happens in 2nd often, but never 3rd.

That does sound pretty impressive. Do you think this new version flows better then the older rp?

That does sound pretty impressive. Do you think this new version flows better then the older rp?

It might... someone in another thread claimed that. The cat unit is quite a bit smaller so I'm guessing there might be less flow restriction.

Im not sure why the flow is that important. Its a 3 inch straight pipe with a cat welded in. If there is any difference in flow from the old unit then it might add 1 HP which you would never feel. Bonez parts are generic cats with a Bonez stamp on them.

Is this new cat finally CARB certified?

Were sound clips ever posted? I dont recall seeing a thread with the new style bonez supercat posted anywhere...

Installation notes:

The O2 sensor is a standard 22mm, so I was able to buy a specialized O2 sensor socket (looks like a normal socket, but has a slot for the wires to slide through) that worked like a charm. After reading that some people f'd up their $300 sensor, this is a smart $8 investment.


An O2 sensor socket would be a good investement but I didn't need it when I did mine. My O2 sensor came off easily with an open end wrench.
Add me to the club that has no problem with the hanger not being there. The pipe is so much lighter than the stock unit and the diameter in most places is a lot smaller.
:)

Just ordered mine... About to order the Turbo XS to go with it in preperation for the upcoming tuning session with Scott in the So Cali. meetup.

Nice!

Hey there guys, RP is nice enough to also send out an email indicating when this will arrive and the date is 5/02. I cant wait! As soon as it comes i'll take some pictures of it and should have it installed within the next week.

After that i'll take some videos of it ideling moving the camera around the car at various points and also get some footage of the car in action while driving.

I also ordered the Turbo XS exhaust, but that should also arrive sometime early this coming week as well.

Still have a few more things to purchase (Revi/Air Duct). I want my car to try and closely match the test car that was tuned by Scott so that I can have at least the same or better results than that car did.

Sweet - sounds like your getting excited :)

Take some good shots of the heat sheild they welded on it for me. You might also have an O2 bung welded into before you install it. Just plug the bung until you need it later on down the road.

Yeah it already has he O2 bung in it. I am not sure exactly what you mean by the above statement. Why wouldnt you plug the O2 sensor in?

I think he is talking about a second o2 bung, in case you want to attach a wideband AFR or EGT gauage later.

Personally i wouldnt bother, and would just take out my o2 sensor whenever i wanted to plug the wideband in... its just personal preference. But, whenever you do take out your o2 sensor... expect a CEL very soon.

-hS

^ Yep, that's what I meant, I second place for a wideband or EGT.

Got it.. Thankx! You had me scared there for a second. I wasnt sure if I had missed something...

I'm considering purchasing a high-flow cat from Rotary Performance in the next month or two. From what ive seen here this is their "new" model right?

Looks quite nice - one question (since im a n00b when it comes to modifying any performance aspect of our 8's) This high flow cat has all the "ports" so you can plug in the o2 sensors and such right? My main concern is not throwing a CEL when i have this baby installed.


Cheers
Jeff

It comes with the O2 bung for the OEM sensor.

I received the product last night and the welds for the high flow cat look really good. Much better than the SR Motorsports version of this product.

I'll post up some pictures of it tonight... My only concern are the welds for the heat shield. It's attached at 4 points to the pipe, but these 4 points are not that large. I hope it doesnt cause an issue in the future.

I bet you could not break those welds if you hit them with a hammer

I bet you could not break those welds if you hit them with a hammer

I wouldn't bet on it... mine had a broken weld when I received it. Do yourself a favor davefzr and cut the heat shield off before you install it:

http://www.rx8club.com/showpost.php?p=1327806&postcount=289

Where did you purchase the resonator from and who installed it for you?

Here are some pictures of the RP Supercat.. If anyone wants any other pictures please let me know... I'll be posting sound clips soon of this setup. Unfortunately though I will also have on lots of other products too.. :) (fortunately or unfortunately??)

....... Close up of welds.

I wouldn't bet on it... mine had a broken weld when I received it. Do yourself a favor davefzr and cut the heat shield off before you install it:

http://www.rx8club.com/showpost.php?p=1327806&postcount=289Or have it welded better - the sheild should stay in place

Just ordered the LC1 wideband as well through injected performance... Nice!

Got a great deal too at 345.00 shipped...

:)

Now your farting in silk

farting silk and have a very loud exhaust.. :)

I decided to go with the Random Technology resonator instead of the Dynomax Bullet. It's perforated unlike the Dynomax unit and also has a high temperature heat resistant insulation material that wont breakdown over time.

Also, this unit is 14 inches long (the Dynomax was 12 and a straight through design) and will provide much more insulation...

This 14" unit should hopefully provide me with much more sound deadening results than the other unit....

Can't wait to not hear it :rolleyes:

haha.. You would try and quiet this sucker down as much as I am trying to if you heard it. I am sure that your experiencing the same thing because you and I have similar setups.

It's just way too loud for me. This is a daily driver and I have to consider that as well...

I should apologize now to all of the people out there that have a loud exhaust.. :) It's not for me, but I still want the flow.

If I get 90% of the flow that I did without the resonator, then i'll be happy. This setup (RP Supercat and TurboXS exhaust) is freaking loud!!

Give us sound clips!! Cause I ordered turbo xs exhaust few days ago and wanted to go with RP supercat :)

I should be able to get you a sound clip before I install the resonator...

I'll work on it. The main problem for me is between 1,500 and 4,800... It sounds very raspy and to use the words of others.. A swarm of angry bumble bees...

It's not good.. trust me :)

I know it will be "freakin loud" but all I care is perfomance. Maybe resonator and silencers would help much. If not, I stay only with exhaust:). Anyway give us sound clip with resonator and without. Thx.

i was planning on leaving my motor basically stock. however im considering this piece because i hear a high flow cat will make a big difference. will this go well with the stock exhaust system? i like the idea of a few horses and the weight savings.

Has anyone actually lost power with this or any highflow cat? Maybe low rpm loss of power?

assholes, read through this whole thing and no sound clips!

G8rboy, I was just curious about the resonator you put on the RP Supercat. What kind of resonator did you get, where did you get it from, and who welded it into your Supercat (I am not familiar with the whole process of adding a resonator). I have the same cat-back system as you and was wanting to add some hp/tq as well as some added sound but I still didn't want for it to be to loud. In your opinion how much louder is it than just the greddy exhaust by itself? Overall how did you feel about this purchase?

Thanks in advance, this will help me a lot.

G8rboy, I was just curious about the resonator you put on the RP Supercat. What kind of resonator did you get, where did you get it from, and who welded it into your Supercat (I am not familiar with the whole process of adding a resonator). I have the same cat-back system as you and was wanting to add some hp/tq as well as some added sound but I still didn't want for it to be to loud. In your opinion how much louder is it than just the greddy exhaust by itself? Overall how did you feel about this purchase?

Thanks in advance, this will help me a lot.

I had this resonator welded in... it's essentially an in-line muffler:
http://store.summitracing.com/partdetail.asp?autofilter=1&part=WLK%2D24222&N=302177+115&autoview=sku

I think I paid $20-$30 at Midas to have it welded in.

I drove it for 2 days without the resonator and was nearly suicidal by day two... partially because of the loudness, and partially because the cheezy Bonez heat shield was buzzing horribly (which I had cut off). After the resonator, it's loud, but a good, aggressive, personal race-car tone. Have you ever heard a Star Mazda series Formula car? It's like that, but turned down quite a bit.

As for comparisons, I would say the Greddy + Super cat was about 60-70% louder than Greddy alone, and after adding the resonator the combination is about 30-40% louder than the Greddy alone.

Let's just say a year later, I absolutely love the sound of my car, and I haven't grown tired of the loudness at all. My wife complains sometimes when she takes it to pick up one of the kids at school because all the teenagers think she's a bad-ass even at light throttle... but deep inside I know she gets off on the loud rotary experience too : ).

LMAO, I bet she does, who could resist. Thanks much for the info.

Oh yeah, I am a gator fan as well.

hey man, do you still have your stock cats? i'd love the buy them

call me 6308024654

thanks
tab