Darth Menace
Enthusiast
hey there, I was wondering if the resonators at the side sills are restrictive or are they pretty much just straight through glasspacks?
Do the factory GTS resonators restrict much?
- Thread starter Darth Menace
- Start date
Ron
Enthusiast
Straight through louvered tubes as I remember. Look though one end to the other, same as the rear muffler though the muffler does have the glass fibers behind the louvered tubes. Not sure if the resonators do or not. Never cut one of those babies open.
Darth Menace
Enthusiast
Odd...if the resonators/mufflers are straight through I'd wonder why it is to much quieter than straight-pipes
It it a straight_thru preforatedtube but the catch is that its a pipe inside of a pipe inside of a pipe. This is why it starts as a 2.5" and comes out as 2.25". The pressure achieved by doing this makez the muffler more effective(soundwize) than a typical straightthru design at the cost of some power.
eucharistos
Enthusiast
(voice of JonB) the year matters
on my '02, the resonators are offset (enters at 9 o'clock exits at 3, or vise versa, depending on side). i have seen pics of straight thru stock resonators. also, my stock muffler had a perforated x-pipe and glass fill, it weighed a ton.
JonB said the stock resonators are not very restrictive (i'm mostly stock), so i left mine in when doing hiflows and muffler delete (i used an x-pipe and am happy with the sound)
on my '02, the resonators are offset (enters at 9 o'clock exits at 3, or vise versa, depending on side). i have seen pics of straight thru stock resonators. also, my stock muffler had a perforated x-pipe and glass fill, it weighed a ton.
JonB said the stock resonators are not very restrictive (i'm mostly stock), so i left mine in when doing hiflows and muffler delete (i used an x-pipe and am happy with the sound)
Darth Menace
Enthusiast
cool..thanks for the info. I was thinking of putting 3 inch glasspacks where the resonators are, since I have the glasspacks sitting here doing nothing. Would putting a glaspack where the one resonator is and deleting the other resonator make it wierd. Reason is cars need at least one muffler in my province, and that is my thought process there. I want the thing loud, so replacing the one resonator with a glasspack (aka muffler), deleting the second resonator and the rear muffler would make my car okay in their books. or would having one resonator deleted and one glasspack sound lopsided...like walking with one foot longer than the other.
PS-One unrelated question. Can the rear O2 sensors be removed without throwing a check engine code or causing problems. I read somewhere that the rear ones arent necessary, but the front ones are
PS-One unrelated question. Can the rear O2 sensors be removed without throwing a check engine code or causing problems. I read somewhere that the rear ones arent necessary, but the front ones are
eucharistos
Enthusiast
how do you "prove" to the man you have a muffler under the sill 
and if i understand you correctly, 1 would be bad for several reasons.
if you want loud and need a muffler i would go catless, resonatorless and replace the muffler with the 2 glasspacks so big brother can see them
if you must have cats, do the same as above but with metal hiflows
cats do the most sound suppression next to the stock muffler
my 2 cents
and if i understand you correctly, 1 would be bad for several reasons.
if you want loud and need a muffler i would go catless, resonatorless and replace the muffler with the 2 glasspacks so big brother can see them
if you must have cats, do the same as above but with metal hiflows
cats do the most sound suppression next to the stock muffler
my 2 cents
It was either the 99 or 00 PCM that started comparing the pre-cat and post-cat O2 values, that is when changing a cat gave you a CEL.
Darth Menace
Enthusiast
nice...mine is a 98. I guess I could unplug my rear o2 sensors to find out for sure.
