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DIY header install for GS300 *WITH PICS*

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Old 08-06-07, 09:58 PM
  #76  
mazzuri
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Originally Posted by JeffTsai
Damn man....that's a sweet looking piece there!

PS: Are you ever gonna make a turbo manifold for that price? If so, I'd pay for a quality manifold at around the $600 price point. A lot of the $1000-1500 manifolds are a bit too rich for me lol.

Thank you. As for the turbo manifold... not sure yet. I don't want to say anything else for the sake of this thread and/or my post being deleted.
Old 05-23-08, 12:42 PM
  #77  
reefdvrjim
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Awesome DIY!!!!
Old 06-22-08, 07:57 PM
  #78  
eyecon7
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Wheres the DYNO??
Old 08-30-08, 06:28 PM
  #79  
andster353
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Just install my headers like 3 weeks ago and my CEL just came on. my ? is, can i just replace the O2 sensors to turn off the CEL and will is stay off? do i really need the O2 sim?
Thanx
Old 08-31-08, 06:37 AM
  #80  
KiPod
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The light is on because the lower 2 sensors are reading that your cats are not working correctly. In reality the cats are missing completely. You will need the O2sim to trick the ECU into thinking the rear O2s are getting a good signal which makes it think the cats are there and working just fine.
Old 08-31-08, 09:49 AM
  #81  
andster353
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Originally Posted by KiPod
The light is on because the lower 2 sensors are reading that your cats are not working correctly. In reality the cats are missing completely. You will need the O2sim to trick the ECU into thinking the rear O2s are getting a good signal which makes it think the cats are there and working just fine.
Oh i c thanx alot
Old 09-01-08, 08:17 AM
  #82  
[ant]
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so do the headers make a big difference? power/torque wise at least?
Old 09-15-08, 02:20 AM
  #83  
denIS200
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Which O2 Simulator's wiring is OK for '01 GS300 ?
There is so much information about different models. Is it possible to clarify the situation for each year model ?

Thanks a lot for your help.

Denis.
Old 09-19-08, 07:16 PM
  #84  
ZippyGuy
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Originally Posted by [ant]
so do the headers make a big difference? power/torque wise at least?
Has anyone that has installed a header actually answered this question?

What is the gain?

How much noise does it increase with a stock y-pipe and/or cat-back exhaust?

Is a header CARB approved for street use?
Old 10-26-08, 11:34 PM
  #85  
Czechlex
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I have a LMS cold air intake and a header on my 01 GS3 and the car is definitely waaaaaaaaaaaaaay more responsive off the line. The rest of the exhaust is stock. I have a NEO that is gonna be installed, then I will get it dynoed. The car is very quiet, just like stock, but when you romp on the throttle, people's heads turn! Headers are not legal in any state, I don't believe.
Old 01-25-09, 12:11 AM
  #86  
albalushi
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Hi,

Where can I get this DIY Headers from and did you feel the perfomance gain and tell me if it so complecated to fix it or not and one more thing, didnt you suffer from any leakage???

Thanks
Old 02-03-09, 02:04 PM
  #87  
MPLexus301
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Ever any definitive answer on noise/power gains with the OBX headers?
Old 06-15-09, 07:44 PM
  #88  
GS300-2002
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Originally Posted by PHML
Ebay....check there.
The OBX headers are sold as headers for the is300 but they still fit right?
Old 06-15-09, 07:48 PM
  #89  
mex lex
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Originally Posted by GS300-2002
The OBX headers are sold as headers for the is300 but they still fit right?
Yep, if you decide to use the OBX y-pipe, you will have to have that extended. Otherwise, the header itself fits.
Old 06-15-09, 09:26 PM
  #90  
GS300-2002
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Originally Posted by mex lex
Yep, if you decide to use the OBX y-pipe, you will have to have that extended. Otherwise, the header itself fits.
thanks and this is the best header there is i take it? also wheres the best place to buy one


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