View Poll Results: Interest: Davesport 100cpi high flow cat
Voters: 18. You may not vote on this poll
Davesport 100cpi metal core high flow cat
09-19-2010, 11:38 PM
#51
Tony says, RX8s are GREAT
Yes ofcourse I have read this thread. Why, what was wrong with what I posted? I am just posting on the HJS cats that teamrx8 was referring to, that they are also used in a cool twin turbo application.
anything else?
Last edited by Benjamz; 09-19-2010 at 11:47 PM.
09-23-2010, 12:59 PM
#53
Tony says, RX8s are GREAT
1. sorry to post something off topic and bump this thread.
2. If it is still made, anyone can get it even if its in another country.
3. cost is not an issue to some people.
When you say provide, do you mean HJS cats or Davesport cats?
Can't we all just get along?
2. If it is still made, anyone can get it even if its in another country.
3. cost is not an issue to some people.
When you say provide, do you mean HJS cats or Davesport cats?
Can't we all just get along?
11-04-2010, 12:05 PM
#55
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Sorry to raise the dead here but what options did everyone go with to mount this up?
That BHR offering looks pretty tempting (with a resonator even) http://blackhaloracing.com/products-...nated-midpipe/
But I wanted to see what else everyone chose?
Thanks for the input.
That BHR offering looks pretty tempting (with a resonator even) http://blackhaloracing.com/products-...nated-midpipe/
But I wanted to see what else everyone chose?
Thanks for the input.
11-04-2010, 01:37 PM
#59
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and the fact that the Vibrant resonator can't handle the EGT's and will literally start tearing itself apart into your mufflers.
aside from that little detail...
aside from that little detail...
11-04-2010, 01:37 PM
#60
Sorry to raise the dead here but what options did everyone go with to mount this up?
That BHR offering looks pretty tempting (with a resonator even) http://blackhaloracing.com/products-...nated-midpipe/
But I wanted to see what else everyone chose?
Thanks for the input.
That BHR offering looks pretty tempting (with a resonator even) http://blackhaloracing.com/products-...nated-midpipe/
But I wanted to see what else everyone chose?
Thanks for the input.
11-04-2010, 08:46 PM
#62
Row faster, I hear banjos
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I guess YMMV on this one...
11-05-2010, 10:18 AM
#64
Allow me to explain;
1) We tried the same Vibrant resonator that everyone else uses for their cheap midpipes. Raspy sound and poor longevity because the interior packing burns away (they were not designed for use with rotary engines). The detrimental effects when this happens have been provided by our good friend, TeamRX8 with a link. Perhaps he will be so kind as to repost it here for everyone to learn about exhaust flow and what happens when devices designed to use packing no longer have the packing to attenuate certain frequency groupings......
2) We then tried the Moroso 94055 Race muffler. Although it has no interior packing, it also failed because Moroso took a patented design, reverse-engineered it, and used thinner gauge steel with shitty welds. The Renesis tore those things apart in 30 days of use.
3) We were then directed by a friend to the guy who holds the patent for the muffler/resonator and the rest of the story is posted on our website.
As for the DaveSport cats costing "only $100"; that is not what they are priced at on Dave's website. I buy them 6-8 at a time for more than that and at a discount that hardly makes offering them on our midpipes worth the hassle for me.
1) We tried the same Vibrant resonator that everyone else uses for their cheap midpipes. Raspy sound and poor longevity because the interior packing burns away (they were not designed for use with rotary engines). The detrimental effects when this happens have been provided by our good friend, TeamRX8 with a link. Perhaps he will be so kind as to repost it here for everyone to learn about exhaust flow and what happens when devices designed to use packing no longer have the packing to attenuate certain frequency groupings......
2) We then tried the Moroso 94055 Race muffler. Although it has no interior packing, it also failed because Moroso took a patented design, reverse-engineered it, and used thinner gauge steel with shitty welds. The Renesis tore those things apart in 30 days of use.
3) We were then directed by a friend to the guy who holds the patent for the muffler/resonator and the rest of the story is posted on our website.
As for the DaveSport cats costing "only $100"; that is not what they are priced at on Dave's website. I buy them 6-8 at a time for more than that and at a discount that hardly makes offering them on our midpipes worth the hassle for me.
11-06-2010, 01:11 AM
#65
It's cheap, but you get what you pay for. 100 CPI is only part of the equation. The OD is considerably smaller than the OE cat. So it gains some flow area with 100 cpi but also gives some up with a lower total cross sectional area. I've never seen any temp data on it, but I suspect it can't take the heat long term.
The stainless mesh packing in my Coast Fab mufflers will never wear out. Ever.
The stainless mesh packing in my Coast Fab mufflers will never wear out. Ever.
11-06-2010, 02:26 AM
#66
I apologize I was incorrect on the price of the davesport cat. I think I paid about $120 plus shipping maybe $135 but that was over a year ago. Website price is about $138 (plus shipping) now.
FTR I think charging $175 for the cat is fair. You do need to make a profit to cover the extra work required for the install and for the buyer it would cost more to have it welded in. Win win for everyone.
11-06-2010, 11:34 AM
#67
The reason I wanted the actual cost of the cat to be clarified is because people will always contact me bitching about the price we charge for stuff, and their complaints are often based on erroneous information. Then, we retailers get accused of charging too much.
Last edited by Charles R. Hill; 11-06-2010 at 11:45 AM.
11-06-2010, 11:40 AM
#68
It's cheap, but you get what you pay for. 100 CPI is only part of the equation. The OD is considerably smaller than the OE cat. So it gains some flow area with 100 cpi but also gives some up with a lower total cross sectional area. I've never seen any temp data on it, but I suspect it can't take the heat long term.
Of course, serious trackers can always use the HJS cat.
01-13-2011, 11:25 AM
#73
It seems that this is the only option to replacing the OEM cat. The RP super cats are dying within 10k.
What kind of longevity are you seeing with these cat's? Also it seems some people are getting P0420 codes is this true or is that because of other problems?
I was thinking of getting the BHR midpipe with the davesport cat to replace my bad OEM cat. At least with this setup the cat is cheap and can be cut out and replaced when it goes bad. $625 with the option to replace the cat for $138 plus welding seems better then spending $1100 for the OEM that seems to die on me every 40k. Unless it just comes out to a wash with lower longevity.
edit i also just found the rx7store replacement that apparently uses the davesport, only $345. apprently swoope has had this one on his car since 2006 with no problems. That might be my answer.
What kind of longevity are you seeing with these cat's? Also it seems some people are getting P0420 codes is this true or is that because of other problems?
I was thinking of getting the BHR midpipe with the davesport cat to replace my bad OEM cat. At least with this setup the cat is cheap and can be cut out and replaced when it goes bad. $625 with the option to replace the cat for $138 plus welding seems better then spending $1100 for the OEM that seems to die on me every 40k. Unless it just comes out to a wash with lower longevity.
edit i also just found the rx7store replacement that apparently uses the davesport, only $345. apprently swoope has had this one on his car since 2006 with no problems. That might be my answer.
Last edited by bsteimel; 01-13-2011 at 11:30 AM.
