obx header
06-03-2009, 10:18 PM
#1
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Join Date: Dec 2005
Location: georgia
Posts: 28
obx header
i have an obx header that i haven't installe yet. i'm waiting to get a testpipe and cat back before i install it. the problem i have is that the outlet on the header has an inside dia of 2 1/4 in. but all the testpipes and afordable catbacks i've found say that they are 3 in.
willa 3 in work?
willa 3 in work?
06-04-2009, 09:03 PM
#3
yes the flanges are the same, but did your "friend" mention that by replacing the cat with a test pipe you'll only see about a 3hp gain? not only that but you'll also be contaminating the environment.
06-05-2009, 08:26 PM
#5
Your lucky to see 3-5hp from a aftermarket exhaust mani for a NA KA. I myself just bought a HOTSHOT from a friend and from what i read on a dyno chart on another forum is the the hotshot proved the most hp out of DC Sports, OBX ect...the guy tested them all with charts.
06-05-2009, 09:38 PM
#6
+1
Your only going to see a 1-2whp increase
I also believe HS Runners are 1.25" and the outlet should be 2.5" if I'm not mistake, dont know the OBX size besides the outlet is 2.5" also
this was a test done on a MX-5 (Stock was 104)
Your only going to see a 1-2whp increase
I also believe HS Runners are 1.25" and the outlet should be 2.5" if I'm not mistake, dont know the OBX size besides the outlet is 2.5" also
this was a test done on a MX-5 (Stock was 104)
Last edited by 240-kid; 06-05-2009 at 09:41 PM.
06-23-2009, 09:38 PM
#7
Besides how did you get that hot shot header? Hot shot has been out of business for over a year.
Got a link?
Last edited by BigVinnie; 06-23-2009 at 09:43 PM.
06-26-2009, 09:40 AM
#8
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Join Date: Mar 2007
Location: Fairmont, West Virginia
Posts: 100
well vinnie your engine is awesome so of course no one is gonna beat your header dyno 
i know that a header will increase hp but you gotta add other mods to it to get the gains your looking for.... one question vinnie i have a early 95 zenki if i punch out the cat (clogged) will it throw a code for me as well?? i have 2 o2 sensors i believe..?
thanx Eric
i know that a header will increase hp but you gotta add other mods to it to get the gains your looking for.... one question vinnie i have a early 95 zenki if i punch out the cat (clogged) will it throw a code for me as well?? i have 2 o2 sensors i believe..? thanx Eric
06-28-2009, 06:24 PM
#9
well vinnie your engine is awesome so of course no one is gonna beat your header dyno i know that a header will increase hp but you gotta add other mods to it to get the gains your looking for.... one question vinnie i have a early 95 zenki if i punch out the cat (clogged) will it throw a code for me as well?? i have 2 o2 sensors i believe..?
thanx Eric
i know that a header will increase hp but you gotta add other mods to it to get the gains your looking for.... one question vinnie i have a early 95 zenki if i punch out the cat (clogged) will it throw a code for me as well?? i have 2 o2 sensors i believe..? thanx Eric
Yes...
You will need a high flow cat. You can't used a punched cat.
06-01-2011, 09:55 PM
#11
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Join Date: May 2011
Location: Bakersfield
Posts: 1
I had in mind that some nice pair of headers would have added maybe 10 hp to a NA KA. from what I have been reading there is only minor hp gains from top brand headers. This is a dumb question but would headers +intake+ exhaust add a significant amount of hp?
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