» Site Navigation | | » Recent Threads | looove 04-16-2024 01:18 PM 04-16-2024 01:18 PM 0 Replies, 440 Views | | lolita porn 04-13-2024 11:45 PM 04-13-2024 11:45 PM 0 Replies, 218 Views | lolita porn 04-13-2024 11:43 PM 04-13-2024 11:44 PM 1 Replies, 141 Views | lolita porn 04-13-2024 11:40 PM 04-13-2024 11:41 PM 1 Replies, 146 Views | lolita porn 04-13-2024 11:38 PM 04-13-2024 11:39 PM 1 Replies, 147 Views | lolita porn 04-13-2024 11:36 PM 04-13-2024 11:37 PM 1 Replies, 140 Views | lolita porn 04-13-2024 11:35 PM 04-13-2024 11:35 PM 0 Replies, 124 Views | lolita porn 04-13-2024 11:34 PM 04-13-2024 11:34 PM 0 Replies, 129 Views | lolita porn 04-13-2024 11:33 PM 04-13-2024 11:33 PM 0 Replies, 123 Views | | | | | 11-18-2008, 03:57 AM | #1 | Member Join Date: Mar 2008 Location: West Palm Beach, FL Posts: 30 | Header with DASC I've read over and over again that the stock BMW M44 header is so good that it's not worth investing in a performance header. This may be true on a naturally aspirated car, what about a car running the DASC? I'm almost certain that a header such as the Supersprint (or Ebay clones) would free up some horsepower, but I can't find any data to support this. My Z3 has a DASC with the 3.6" pulley and the Technique Tuning stage III kit, so I'm getting about 9-9.5 psi. The only other engine mod is a Supersprint cat-back. The supercharger forces far more air than stock into the motor, so I think that opening up the exhaust can only help, right? I'm interested in trying a header (and cat delete), but before I do so II really want to hear from someone who's done it or has seen dyno graphs, etc. Any input would be very much appreciated. | | | 11-19-2008, 12:23 AM | #2 | Senior Member Join Date: Dec 2007 Location: Gulfport, Florida Posts: 3,208 | Leave the header. The restrictions start where it connects to the collector then to one pipe that I think is 2 1/4". I went 3" from the collector back and it flows... Quote: Originally Posted by Christian I've read over and over again that the stock BMW M44 header is so good that it's not worth investing in a performance header. This may be true on a naturally aspirated car, what about a car running the DASC? I'm almost certain that a header such as the Supersprint (or Ebay clones) would free up some horsepower, but I can't find any data to support this. My Z3 has a DASC with the 3.6" pulley and the Technique Tuning stage III kit, so I'm getting about 9-9.5 psi. The only other engine mod is a Supersprint cat-back. The supercharger forces far more air than stock into the motor, so I think that opening up the exhaust can only help, right? I'm interested in trying a header (and cat delete), but before I do so II really want to hear from someone who's done it or has seen dyno graphs, etc. Any input would be very much appreciated. | | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | |
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