G35 Sedan V35 2003-06 Discussion about the 1st Generation V35 G35 Sedan

Help with my catalytic converters

  #16  
Old 04-10-2018, 02:06 PM
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Originally Posted by Infin_g35x View Post
Need to replace the cat converters on my ride 2005 G35 x sedan AWD. My question is can I use test pipes where the converters go and if so what would you recommend and I would need something compatible in the further for a stillen exhaust system Gen 1. Need help!!!
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infin_g35x
Pretty old thread! You can replace the cats with test pipes, but you WILL throw a SES light unless the test pipes have non-fouler connections. It will also be louder and prone to rasp. As long as your purchase test pipes specifically made to fit, then they should bolt right up to your Stillen system.

Good Luck!
 
  #17  
Old 04-10-2018, 10:08 PM
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Test pipes

Originally Posted by g356sp View Post
Pretty old thread! You can replace the cats with test pipes, but you WILL throw a SES light unless the test pipes have non-fouler connections. It will also be louder and prone to rasp. As long as your purchase test pipes specifically made to fit, then they should bolt right up to your Stillen system.

Good Luck!
what is a ses light thrown and how would I know if the test pipes have a non-fouler connection. Im not worried about a rasp sound. Thatís better than the rattle Iím getting from the cats and my exhaust.
 
  #18  
Old 04-10-2018, 10:14 PM
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Some test pipes have a small tube welded onto the main pipe to relocate the O2 sensor further from the exhaust stream, ones that don't typically require "non-foulers" which thread onto the pipes and have a small hole for exhaust gasses to pass through. The G usually requires 2 sets of non-foulers, drill out the first set so the hole doesn't reduce (basically makes the non-fouler just an extension bushing" then screw on ANOTHER non-fouler and leave it alone.

The whole point is to move the O2 sensor further from the fast-moving exhaust stream and reduce the flow across the sensor. test pipes like the Motordyne ART pipes and Fast Intentions test pipes don't usually require non-foulers because of the extension tube they weld on.
 
  #19  
Old 04-11-2018, 12:18 PM
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^what he said, but they do make extra long non-foulers that you only need one set of. SES is what our cars have instead of a CEL, it means "Service Engine Soon".
 
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