best high flow cat
#1
Cause i Spit Hot Fire!!
Thread Starter
Join Date: Feb 2003
Location: Albuquerque, NM
Posts: 313
Likes: 0
Received 0 Likes
on
0 Posts
best high flow cat
i have an 88 na and i was wondering what the best high flow cat is. i ve looked and all i could find was the bonez superflow system., but i heard they wont fit with an aftermarket header.if any one has any opinons on this system or any other sytem that would be great.
#2
still love the FC
Join Date: May 2002
Location: Dayton, Ohio
Posts: 360
Likes: 0
Received 0 Likes
on
0 Posts
I have the Bonez Superflo from rx7.com.
I have to pass emissions in Ohio, and this exhaust modification has been the best one I've done so far. I kept the stock exhaust manifold & a modified dual cat-back.
The resulting sound of the exhaust is pretty good. It has a nice low tone with the typical spinning whine of the rotary superimposed on it. It does NOT make your car sound like an oversized chainsaw like some I've heard.
http://www.rx7.com/cgi-local/2catalo...cat=4&part=300
You might want to send an e-mail or give a call to the people at rx7.com (Texas). A header may work if you just buy the Bonez Main Cat instead of the one with the presilencer attached (like I did).
I don't know what the upper RPM gains are for a header over the stock exhaust manifold. Maybe someone else can respond to that question.
Oh, and make sure you double check your 6PI system (auxillary ports), because you have a series 4 car. They may or may not work the same as before because of the change in exhaust pressure.
Good Luck
The resulting sound of the exhaust is pretty good. It has a nice low tone with the typical spinning whine of the rotary superimposed on it. It does NOT make your car sound like an oversized chainsaw like some I've heard.
http://www.rx7.com/cgi-local/2catalo...cat=4&part=300
You might want to send an e-mail or give a call to the people at rx7.com (Texas). A header may work if you just buy the Bonez Main Cat instead of the one with the presilencer attached (like I did).
I don't know what the upper RPM gains are for a header over the stock exhaust manifold. Maybe someone else can respond to that question.
Oh, and make sure you double check your 6PI system (auxillary ports), because you have a series 4 car. They may or may not work the same as before because of the change in exhaust pressure.
Good Luck
#3
Rabbit hole specialist
iTrader: (11)
Mazdatrix sells cats that will bolt up to headers, but they're a little pricey. If you went with the Bonez, you just have to have a short section of pipe attached to one end of the cat so that it reaches the header.
Wouldn't be too hard for a competent welder or an exhaust shop.
Wouldn't be too hard for a competent welder or an exhaust shop.
#4
Full Member
Join Date: Apr 2003
Location: The Bay Area
Posts: 55
Likes: 0
Received 0 Likes
on
0 Posts
I used to have a N/A 87 Rx7 SE. My cats got clogged so I went with Mindtrain high-flo cat. They are based in Beverly Hills CA. The good thing about this cat is it gives your car 20hp!! I installed it on mine took it to a dyno. Mods before the mindtrain cat was just a K&N replactment filter and 2.5 catback. Dyno read 178 hp after the Mindtrain cat. They are hard to find but they work great.
Trending Topics
#10
I have the bonez cat on a 88 convertible with otherwise stock exhaust system. I'm not sure about horsepower gains but it's holding up well and its a bit louder than stock when you open it up, but not by much. It's the cheapest way to pass emissions, I think.
#13
FC 2 NV
Join Date: Jun 2003
Location: Lancaster, CA.
Posts: 498
Likes: 0
Received 0 Likes
on
0 Posts
I've used a Bonez cat setup for my 86 (while it was N/A) and I purchased another Bonez cat for my T2 conversion I am doing right now. With the N/A, I passed California emmissions twice. Power-wise, it seemed fine as well, although I won't boast a 20hp gain from just the cat
#14
Cause i Spit Hot Fire!!
Thread Starter
Join Date: Feb 2003
Location: Albuquerque, NM
Posts: 313
Likes: 0
Received 0 Likes
on
0 Posts
thanks everyone. ok i think ill go with the bonez cat. with a custom pipe to single side muffler. im thinking corksport though because there not to exspensive and from what ive heard there prety well made. any suggestions for a different muffler. better?
#16
W. TX chirpin Monkey
Join Date: Sep 2001
Location: Mesquite, TX
Posts: 2,684
Likes: 0
Received 0 Likes
on
0 Posts
Bonez is a good cat, but i would go with the Catco will burn up, and clog after about a year. It's a cheap intermediate replacement. I would recommend www.randomtechnologies.com for something custom made specifically for the rotary. Good stuff
#23
Cause i Spit Hot Fire!!
Thread Starter
Join Date: Feb 2003
Location: Albuquerque, NM
Posts: 313
Likes: 0
Received 0 Likes
on
0 Posts
i looked at the xr-1 and there nice but im trying to save money, so another 200$ pre silencer wont work. would using the corksport muffler be a good choice?
#24
Junior Member
Join Date: Oct 2002
Location: miami fl
Posts: 15
Likes: 0
Received 0 Likes
on
0 Posts
i have a R.P. exhaust from rx7.com they look almost stock. tips and y pipe are a littel bigger nice sound.good price 395 for duals.i am going for the bonze super flow cat system now will let you know what i think.