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Post by twomanymontes on Sept 28, 2009 20:30:00 GMT -5
Ok, The resonator on my 01 has started to split at the seam and I'm getting that fluttering exhaust leak. Also the downstream O2 sensor is settign a a code for poor perfromance. The car has that U-bend where the sensor goes. I'm thinking about having the U-bend pipe and resonator replaced with a straight pipe and having a Bung welded in for the new sensor.
My questions are, 1, how will this sound, since i'll be leaving the rest of the stock system in place and 2, Will I get any more performace out of it since I will be doing away with some restrictions.
What do you all think?
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Post by 85t5mcss on Sept 29, 2009 18:33:02 GMT -5
IMO, sound will improve slightly, flow wont notice a difference but is well worth the effort just to let it breathe easier. Gains or not, I'd still do it since it needs fixed anyways.
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Post by twomanymontes on Oct 4, 2009 15:01:34 GMT -5
my thoughts as well, I just wrapped up the cash to replace the wheel bearing, hopefully I can get a new sensor and get the pipe welded in next weekend
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Post by donutboy97 on Jan 6, 2010 22:24:21 GMT -5
I forgot to ask you, or maybe you told me and I don;t remember, but how did it turn out? I've yet to replace my u-bend
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Post by twomanymontes on Jan 7, 2010 19:40:12 GMT -5
Actually, I did forget to post the results here. But I did tell you Tim, taht day when I supposedly drove thru the lake.
Yeah, In October the U-bend and the resonator were cut out, A straight pipe installed with a Bung for the new O2 Sensor. The tone never really changed, but it does have a baffle noise when you rev it in park or neutral. And it seems to accelerate a bit quicker too. Not like anHP increase, but a less restiction increase.
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Post by donutboy97 on Jan 7, 2010 21:28:35 GMT -5
Actually, I did forget to post the results here. But I did tell you Tim, taht day when I supposedly drove thru the lake. well that explains why i don;t remember. lol cool. i'll have to consider it. maybe i'll get around to do it this summer |
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Post by 85monte on Mar 12, 2010 22:15:21 GMT -5
DO NOT STRAIGHT PIPE!!!
it will will sound horrible trust me on this lol
replace the res and U-bend with a 32" long glass pack it will act as a res and get rid of the rasp/ bumble bee affect
and removle of the U-bend has shown 5 hp increase on a dyno with a stock L67 a N/A should be close
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Post by twomanymontes on Mar 13, 2010 14:55:58 GMT -5
it really hasn't changed the tone, Just a baffle noise when I rev it over 2K in neutral or park. Since I don't have any reason to do that, I'm good with it
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Post by 85monte on Mar 13, 2010 15:54:18 GMT -5
you still have a cat?
that might have something to do with it most cars that straight pipe remove the cat
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Post by twomanymontes on Mar 14, 2010 8:26:28 GMT -5
Cat is still in place. Couldn't pass NYS Inspecton without it. Well, I could, But I really don't want to loose my inspector's license or the $2500. to pay the fine if I'm caught
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