SC300 OBX headers question
#1
Lead Lap
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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
Thanks
#2
Lexus Test Driver
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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.
#3
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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.
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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
oh, im too broke for dyno haha
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#8
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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.
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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
thanks
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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.
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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
#15
Lead Lap
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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.
![](http://i1101.photobucket.com/albums/g435/grumpimonkey/Mobile%20Uploads/headers_zps73195344.jpg)
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