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| Standard Exhaust header mod; 2-1 section | |
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| Tweet Topic Started: Jun 8 2008, 09:48 AM (272 Views) | |
| Peter | Jun 8 2008, 09:48 AM Post #1 |
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Stage 6
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Not to sure if this will infact be benificial for the exhaust system but I figured it'd do no harm, my mechanic also agreed on this, we all know the standard extractors have 2 perforated fins in the lower part to try and distort the exhaust pulse to make the car a little quieter (or so I've read) my mechanic and I figured that it be okay to remove anything to slow down exhaust flow isn't exactly helpful |
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| dub-levin | Jun 8 2008, 10:39 AM Post #2 |
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Stage 6
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thats something i have looked at doing. was it easy to do? and does it make much if any difference ? (sound and power) |
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| Peter | Jun 10 2008, 09:09 AM Post #3 |
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Stage 6
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It wasn't too hard, we just used a lever to work the fins back and forth and eventually broke them out then cleaned it all up with a die grinder. |
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| kyleseo | Jun 10 2008, 04:49 PM Post #4 |
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Stage 5
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Couldn't believe that when i looked down the pipe, it literally flattens down to about an inch or so high! |
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| 1i1 | May 18 2009, 11:36 PM Post #5 |
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NZ Toyota Parts Guy
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In the next week or two i hope to get the squashed part of the 2-1 section remade on my factory extractors. I had a bit of a look on here but didn't find what i'm after - that is, has anyone done a before and after dyno run (or run using apexi rsm etc) to see what the gains were? I have an old school gtech timer so will try and get the conditions as close as possible in before/after runs to see if my car gets an improvement Anyone? |
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| AceSniper | May 19 2009, 05:44 AM Post #6 |
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Global Moderator
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rough 8-10hp... around the same as removing the cat. |
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| Kaiser | May 19 2009, 07:34 AM Post #7 |
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Stage 5
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How are you remaking them? Are you just removing the baffles? |
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| AceSniper | May 19 2009, 07:51 AM Post #8 |
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Global Moderator
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new pipe... under the heat shelds the pipes quite squished. |
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| 1i1 | May 19 2009, 10:22 PM Post #9 |
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NZ Toyota Parts Guy
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yeah just the piece over the crossmember. I got another pipe from the wreckers a while back as a spare and finally took the sheilding off it last night - will put a picture up for reference. When i speak to the exhaust guy i'll see what he reckons - just the piece over the crossmember or the entire 2-1 pipe back to the cat.Yup thats why the plan is to keep the very first part of the 2-1 where the factory flexi is
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| AceSniper | May 20 2009, 03:39 AM Post #10 |
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Global Moderator
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yeah its easy to keep the stock flexi in there... Just make sure they only replace to the flange (not remove the flange and weld it... seen that sux to remove the x-member) Also there is the 2bolt bracket mount and o2 sensor mount that needs to be transferred or what ever... See Tom's Used to sell just a replacement 2-1 pipe |
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| nzbzg | Jun 15 2009, 06:49 AM Post #11 |
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Stage 4
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sounds like a plan but id av to make a trip up to feilding i am going up to turangi for a holiday this friday so could possibly go on bit of a alterative route would you be able to meet up on friday ? |
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| nzcub3y | Jun 16 2009, 01:29 AM Post #12 |
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Stage 2
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nice mark ![]() It'd be interesting to have a look tomorrow anyways :-) I am currently planning to do something to the exhaust anywho
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| nzbzg | Jun 16 2009, 04:05 AM Post #13 |
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Stage 4
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nah too late all good tho mite make a trip up one weekend to go for a drive n if ur round meet up |
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| 1i1 | Jun 16 2009, 04:08 AM Post #14 |
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NZ Toyota Parts Guy
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All good. I'm usually keen for random drives |
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| jim20 | Mar 13 2011, 05:45 AM Post #15 |
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Stage 2
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Removing those perforated tabs at the bottom of the factory exhaust manifold is definately a good idea. |
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| Ikenty | Mar 13 2011, 07:18 AM Post #16 |
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BZ Touring Carib
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I removed mines but I have not put back my engine together as yet. I am also remaking the bottom section 2 into 1 |
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2:13 PM Jul 11