11-06-2008, 09:19 AM
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#2
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Registered User
Join Date: Jan 2007
Location: Depends on the day of the week....
Posts: 1,400
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As has been discussed already on this forum, the headers appear horribly designed, and it's a complete mystery to me why they are putting cats in both the header and the midpipe, when only set is required to avoid CELs when running the US DME program.
Also, I don't know if anyone has commented on whether or not the system has resonance issues, but looking at the sheer simplicity of the design, I would guess it likely suffers from them.
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Boxster S
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11-06-2008, 09:38 AM
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#3
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Registered User
Join Date: Nov 2003
Location: Illinois
Posts: 3,033
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Did you notice 02 bungs before and aft of the downstream cats as well? It looks like they are on there in the pics. What's that all about? Yeah, you'd think they would've just done a straight through test pipe downstream instead of adding a second set of cat like the factory. I'm guessing they probably did it to keep it 50 state smog legal.
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11-06-2008, 09:56 AM
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#4
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Registered User
Join Date: Oct 2008
Location: Milford, Ks.
Posts: 73
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Bang for the buck
I personally talked to the owner of Maxspeed over the phone who owns a Box S himself with this exhaust intalled. He said that there is little to no resonance at all in the cabin and that with his ECU on the fritz and #3 not firing correctly he was still getting a 25 whp gain. This is the exhaust that I bought. My mechanic works for Penske racing and he said that it looks very well built and thought out, just not that pleasing to the eye.
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-Jeff-
"I'm a glutton for punishment when it comes to my boxster"
'03 S/ PSS9/ B&M short throw/ EVOMS intake/ NHP full exhaust w/ headers / Cantrell MS custom tune
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11-06-2008, 10:00 AM
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#5
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Registered User
Join Date: Oct 2008
Location: Milford, Ks.
Posts: 73
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Much like Fabspeed
Quote:
Originally Posted by Adam
Did you notice 02 bungs before and aft of the downstream cats as well? It looks like they are on there in the pics. What's that all about? Yeah, you'd think they would've just done a straight through test pipe downstream instead of adding a second set of cat like the factory. I'm guessing they probably did it to keep it 50 state smog legal.
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This exhaust is a lot like the Fabspeed in the respect that you can get both headers and midpipes with or without CATs. I also asked about the QA/QC on the exhaust and the owner said that he visually inpects every system himself.
__________________
-Jeff-
"I'm a glutton for punishment when it comes to my boxster"
'03 S/ PSS9/ B&M short throw/ EVOMS intake/ NHP full exhaust w/ headers / Cantrell MS custom tune
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11-06-2008, 11:18 AM
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#6
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Registered User
Join Date: Sep 2005
Location: Sacramento
Posts: 3,417
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Quote:
Originally Posted by Adam
Did you notice 02 bungs before and aft of the downstream cats as well? It looks like they are on there in the pics. What's that all about? Yeah, you'd think they would've just done a straight through test pipe downstream instead of adding a second set of cat like the factory. I'm guessing they probably did it to keep it 50 state smog legal.
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Doesn't matter if there is a 2nd set of cats or not. Unless there is a C.A.R.B. stamp somewhere on the exhaust it won't pass as street legal in CA.
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-99' Zenith Blue 5-spd...didn't agree with a center divider on the freeway
-01' S Orient Red Metallic 6-spd...money pit...sold to buy a house
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11-07-2008, 09:54 AM
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#7
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Registered User
Join Date: Mar 2008
Location: CA
Posts: 726
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i kind of wonder if you would still pass smog with this system in place.
when i took my car to get smogged, I watched the guy. the ONLY visual inspection he did at ALL was top pop the engine cover off and look at it for about 10 seconds. literally. i helped him drop the top, unhook stuff, and pop off that top cover.
if you installed this system - how well could you see it just from the top? aftet it was on for a while, and got nice and dirty..it would just look like stock stuff and the stupid smog guys maynot know the diffeerence.
i'm suspiscious of the claimed whp gain!?!
what kind of gain would you get on a base 2.7 rated at 217hp? maybe not enough to justify the big ticket price tag....
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11-09-2008, 07:59 AM
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#8
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Registered User
Join Date: Oct 2008
Location: Milford, Ks.
Posts: 73
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Good deal
Quote:
Originally Posted by 23109VC
what kind of gain would you get on a base 2.7 rated at 217hp? maybe not enough to justify the big ticket price tag....
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Actually, this is one of the cheaper FULL exhaust systems out there. As for the whp gains, I'm a little sceptical my self, but you never know....:dance:
__________________
-Jeff-
"I'm a glutton for punishment when it comes to my boxster"
'03 S/ PSS9/ B&M short throw/ EVOMS intake/ NHP full exhaust w/ headers / Cantrell MS custom tune
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