When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Last year my 2004 RX8 exhaust smelled very rich. I replaced the OEM exhaust with a TurboXS including the catalytic converter. Fast forward 8 months and the rich exhaust smell is back. I changed both O2 sensors. I get a P2096 post Cat fuel trim bank 1 fault (Too lean). In addition, idle surges. Anyone experience similar issues?Could the Cat be bad?
The ONLY cats that can stand up to the heat produced by this engine are the factory cat, the cat BHR uses in their midpipes (street only), and some units from HJS (imported from Germany). That statement is true ONLY if you keep your ignition components healthy at all times. Failing ignition components cause fuel and oil to be dumped into the cat, which clogs it. The heat and backpressure from the clog kills the rear rotor in the engine.
This is why we stress the hell out of staying on top of your coils, wires, and plugs.
All the other aftermarket cats burn out due to the 1700F EGT produced by this engine under load. Most cats are rated for 1200F.
Sorry, not their engineers but one of their US reps.
Originally Posted by Steve Dallas
The cat I bought was recommended to me by the rep at HJS NA, after I sent him a chart of my rear O2 sensor temps on track. He said it would stand up to that abuse, and is the same cat used by Porsche in the 911 Turbo as OE. Supposedly has 3 winding centers instead of 2, like their motorsports cats.
Originally Posted by Jastreb
You can buy an HJS cat that meets Euro 5 specifications. AFAIK our cars only ever satisfied the Euro 4 spec. I believe Euro 5 has a lower limit for NOx.
^ That is the cat I had welded into my BHR midpipe. I have only had it for a couple of months, but so far, so good. No CELs and very little stench. I have 3 track days on it, and it it holding up fine for now.
That link is dead so here's an updated one to 90 95 0182
You just import your oversized cocktail shaker from Germany like I did; twice.
Which mine is sitting in the garage now that I’m moving into a non-emissions race class ...
but this is the 100 cpi race version, never had a cel with it though, about 6” diameter on the main body, so not the small restrictive type that gets overhyped as high flow
HJS-Nr. 90 95 0050 GT 1407/10 PE3.1 kgup to 400 hp/up to 3000 ccm,
You just import your oversized cocktail shaker from Germany like I did; twice.
Which mine is sitting in the garage now that I’m moving into a non-emissions race class ...
but this is the 100 cpi race version, never had a cel with it though, about 6” diameter on the main body, so not the small restrictive type that gets overhyped as high flow
HJS-Nr. 90 95 0050 GT 1407/10 PE3.1 kgup to 400 hp/up to 3000 ccm,
You just import your oversized cocktail shaker from Germany like I did; twice.
Which mine is sitting in the garage now that I’m moving into a non-emissions race class ...
but this is the 100 cpi race version, never had a cel with it though, about 6” diameter on the main body, so not the small restrictive type that gets overhyped as high flow
HJS-Nr. 90 95 0050 GT 1407/10 PE3.1 kgup to 400 hp/up to 3000 ccm,
This is is a good cat! Nice and hefty compared to everything else out there. BHR came out with an upgraded coil pack for our RX8. Pair the coils with this cat and your car will come back to life!
GT 1407/10 PE3.1 kgup to 400 hp/up to 3000 ccm,
