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      02-24-2015, 03:16 PM   #23
OptionlessM
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clear out that PM box, mr. britches
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      02-24-2015, 03:41 PM   #24
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clear out that PM box, mr. britches
Yeah yeah... it's hard being popular.

Sorry! Cleaned out now!
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      02-24-2015, 05:13 PM   #25
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Does CPI offer a direct replacement for the section 1 on Z4M similar to the one they offer for E46 M3.

I would like to do these stepped headers plus a resonated section 1.

No cats. Need to warm the globe for the poor east coast.
There is one Z4M out there running CPI's RTX unit, I'm not sure who it is though. I tried to see if we could get interest on a production batch of these in a separate thread but the interest really wasn't there, wasn't worth the time/effort.

DKF Section 1 is definitely the forum favorite though
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      09-08-2015, 11:38 AM   #26
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Originally Posted by tiltmode43 View Post
There is one Z4M out there running CPI's RTX unit, I'm not sure who it is though. I tried to see if we could get interest on a production batch of these in a separate thread but the interest really wasn't there, wasn't worth the time/effort.

DKF Section 1 is definitely the forum favorite though
To update this thread, looks like there may be another S1 option after all, or at least a proper fix to the DKF setup -> http://www.zpost.com/forums/showthread.php?t=1050286
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      10-26-2015, 02:43 PM   #27
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I'm going to assume these are not smog legal? Great write up!
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      01-03-2021, 10:43 PM   #28
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Where can you get these CPI headers? Also I cannot find their website ANYWHERE. Do they even have one? Thank you
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      01-04-2021, 01:39 AM   #29
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Where can you get these CPI headers? Also I cannot find their website ANYWHERE. Do they even have one? Thank you
Turner Motorsport & Bimmerworld carry them.
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      01-04-2021, 03:37 PM   #30
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Where can you get these CPI headers? Also I cannot find their website ANYWHERE. Do they even have one? Thank you
Turner Motorsport & Bimmerworld carry them.
Thanks man. I saw those but they haven't had them in stock for a long time it seems. I've been on the notification email if they restock and have yet to ever hear anything.

I see turner has a note that they will have stock Jan 27. I will keep an eye on the site..

Does CPI not have a website?
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      01-04-2021, 04:47 PM   #31
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I think CPI was bought by one of the previously mentioned companies a few years ago.
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