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SC300 OBX headers question

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Old 08-07-08, 11:48 PM
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flipboi
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Default SC300 OBX headers question

sorry if this is a repost but i did search and nothin came up but has any1 with the sc300 ever try the OBX headers? if so may i have your opinion about this product, like was their any difference in power or any installation problems?

Thanks
Old 08-08-08, 06:54 PM
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TLDriver
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Never had a set of OBX headers on the SC but I had them on my 3.2TL and they were hit and miss with them. The welds would break with time. I got my set used and it lasted me 15k miles before I had a small leak. I took them out and welded them up again. I did notice a difference on the butt dyno.
Old 08-11-08, 10:32 AM
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Durrr
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I had OBX headers on my old 96 accord EX many years ago, had 55k miles on them when I sold the car, and had noticeable improvement in throttle response and exhaust noise change. No problems at all w/ them.
Old 08-19-08, 03:35 PM
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flipboi
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well im getiin mine installed today so i guess ill be the first sc300 with it on ill tell u guys my opinion about it when i get done
Old 08-19-08, 05:13 PM
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93sc3005sp
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post up some sound clips!
Old 08-19-08, 05:20 PM
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5sp_jzz30
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dyno numbers would be nice
Old 08-20-08, 08:49 AM
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flipboi
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damn so far its not going good.. the headers has the O2 sensor poing out to the firewall so i cant fit it in... tried hammering the firewall a little and put it back in and broke my O2 sensor off... now i got to replace that stupid thing... and the down pipe is hitting the sub frame everytime the engine moves... it in but with no O2 sensor... it pretty quiet since i have the stock exhaust but once im finish ill give u guys an update

oh, im too broke for dyno haha
Old 09-21-08, 07:01 PM
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97whitelex
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theres another post floating around on here about obx header and mid pipe. And they arent good. They brought up about the O2 sensor pointing to the fire wall. Ialmost bought some for my sc but mines a 98 and it has the two pipes from the factory manifold to the mid pipe unlike the ones obx sells with the single pipe. Mine is similar to the is header.
Old 09-21-08, 08:45 PM
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turbodremz
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remove the header, cut where the o2 bung is, turn it so its facing the correct direction and reweld..

find a shop that does mandrel bends and have them put a slight bend so its not hitting the sub frame...

problem solved
Old 09-21-08, 09:26 PM
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5sp_jzz30
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find a buddy that welds and give him some beer

i would do it but youre too far away. well depends on how much beer you provide
Old 12-30-08, 08:34 PM
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want sc300
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did you buy the header off eBay if so do you know what size the exhaust is. i kinda would like to know before i get it also is the o2 sensor thing a problem with all year sc's

thanks
Old 01-23-13, 02:47 PM
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Holland300
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I've installed the OBX header and mid-pipe on my 97 sc300. I had to cut off the O2 sensor and re-weld it on mid-pipe due to them not welding in on right, had to extend the wires to the said O2, bc its pushed back. Now its rattling/rubbing when I turn to the left. Guess its where the header connects to the mid-pipe. Either way not all that happy with them, Also had to bang in my fire wall for the O2 on the header (well one of them).

Last edited by Holland300; 01-23-13 at 02:56 PM.
Old 01-24-13, 09:01 PM
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3L4jzz31
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Bro... this thread is from '08.. and there is another thread referring to the issues with the headers that you had.
Old 02-23-15, 08:19 PM
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PapiSucio
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Originally Posted by 3L4jzz31
Bro... this thread is from '08.. and there is another thread referring to the issues with the headers that you had.

Throw the URL on here. google sends you to this link, and the other one didn't pop up.

Last edited by PapiSucio; 02-23-15 at 08:32 PM. Reason: poor grammar
Old 02-24-15, 07:58 AM
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grumpi300
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I bought these headers from amazon and love them, granted I had to modify them. first thing I noticed when I bought them was that the headers DO NOT slide onto the cylinder head studs without movement of the headers. I didn't feel like forcefully twisting the headers so I just had the muffler shop I took them too fix that. the second thing I noticed was that the o2 flanges are different than the factory ones. my options were either buy new o2 sensors, even though mine were already new, or weld on 2 bolt flange bungs. so I had the shop do weld those on. that is all that is needed to make them fit and work. overall I would say buy them if you want to spend more money on modifying them to fit. otherwise they will not work. heres a pic.
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