What have you done to your P5 today?

That Miata sounds sick! Probably one of the best sounding I've ever heard. Most of the ones I've heard with exhaust sound like Civics.

It is sooooooooo lovely. I was fortunate enough to be the first to ride in it. :)
 
^^^.... that car is SILENT compaired to mine... lol ( 3'' straight pipe no muffler no cat no resonator.... )
my 2.5 in setup is in storage incase i go back to NA for some weird reason...
 
IIRC it's 2.25" like the P5, sedan etc.

Regular sedan and p5 have 2.25"? I don't know for sure, but I think that's incorrect. Pretty sure the regular exhaust piping is smaller than the Racingbeat exhausts. I've seen them next to each other and they appear smaller. They are 1.75" I am thinking...
 
^^^.... that car is SILENT compaired to mine... lol ( 3'' straight pipe no muffler no cat no resonator.... )
my 2.5 in setup is in storage incase i go back to NA for some weird reason...

Similar to mine. 2.5" downpipe, no cat, straight 3" to a "muffler"
 
I wouldn't regret anything until you have experience with it. Sound's a very subjective thing. Even if the consensus on the P5 Sport axleback is pretty unanimous ;)
 
Regular sedan and p5 have 2.25"? I don't know for sure, but I think that's incorrect. Pretty sure the regular exhaust piping is smaller than the Racingbeat exhausts. I've seen them next to each other and they appear smaller. They are 1.75" I am thinking...

yeah stock p5/msp is 2.25"....1.75" is stupid tiny
 
I just went outside and measured my stock P5 midpipe with the OEM cat and it was just a tiny bit under 2" OD.

So what do you guys think about high flow catylitic converters? The OEM cat is about 13" long so I think this MagnaFlow would be a good fit. The Corksport piping is 2.4" ID and this cat is 2.5" ID, a welder would be able to weld them together, right? I don't think I'll find a cat with the exact 2.4" fit. This specific cat is 49 state legal, because I'll need to pass emissions in two years. Anyone have any experience with passing emissions on a high flow cat?

Best of all, it's only $65 and I live 15 minutes from Summit Racing.

*edit* or I was thinking if the Magnaflow cat is 2.5" ID and my Corksport midpipe is 2.4" ID maybe I could simply cut the midpipe and slip the Magnaflow cat over the piping and clamp it on? Though, I guess welding would be best...
 
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I just went outside and measured my stock P5 midpipe with the OEM cat and it was just a tiny bit under 2" OD.

So what do you guys think about high flow catylitic converters? The OEM cat is about 13" long so I think this MagnaFlow would be a good fit. The Corksport piping is 2.4" ID and this cat is 2.5" ID, a welder would be able to weld them together, right? I don't think I'll find a cat with the exact 2.4" fit. This specific cat is 49 state legal, because I'll need to pass emissions in two years. Anyone have any experience with passing emissions on a high flow cat?

Best of all, it's only $65 and I live 15 minutes from Summit Racing.

oddly enough i found a 2.5" ID fits perfectly on a corksport 2.4"ID pipe
 
^^ isnt that an old video? or maybe i have seen a few silver msp's on that particular dyno.....

speaking of dynos.... 5th gear is still doing theres in TOPEKA, ks ( no not google... i dont think it was a formal change lol ) second weekend in may.
 
That video was from last week. Thanks for posting it up, Phen. I was pretty happy with my pull. 115hp/112lbs @6500rpm on a Mustang Dyno and she was still pulling. Mods are MP3 ECU, AEM intake, VTCS removal, Spooled^Racing header and the bloody loud Corksport catless header back exhaust. I know 115 aint much and I had 2nd to lowest power that day but it's pretty good for a P5.
 
That video was from last week. Thanks for posting it up, Phen. I was pretty happy with my pull. 115hp/112lbs @6500rpm on a Mustang Dyno and she was still pulling. Mods are MP3 ECU, AEM intake, VTCS removal, Spooled^Racing header and the bloody loud Corksport catless header back exhaust. I know 115 aint much and I had 2nd to lowest power that day but it's pretty good for a P5.

theres a dyno day this saturday but you had to sign up and i work that day anyway....but i wanted to run mine. just to see what it does before turbo and then after turbo. owell (dunno)
 

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