U-Bend?

Just wondering if taking the u bend off how much louder will the noise become out the tail pipes. if anyone has a soundclip of just the u bend off and replaced with just a straight pipe and the rest ALL stock let me know too.

I didn't notice any difference in exhaust sound. The purpose of getting rid of the ubend is to help exhaust flow and gain some horsepower although it is minimal.

hmm, at the moment i dont really care for having more power, i just want it to sound a little louder and decent. what else can i do for cheap to get the exhaust to sound nice or at least decent and is there anything i can do without having to replace the 2 back mufflers as well?

You could remove the resonator. It will be louder but the side effect is a droning sound which you will notice on trips, etc. To get the sound you are looking for will require replacment of the two mufflers with Flowmaster, Borla, SLP, etc. IMO whatever sound you get from the variety of aftermarket mufflers other than stock is too ricey sounding for my taste.

yeah i dont want that ricey sound. the resonater is that slightly larger pipe that runs straight right before the back mufflers right? if thats taken off do i replace it with just a regular straight pipe? if any sound clips exist of what that would sound like with just the resonater off and the rest stock too that would be great, if not i can look around youtube or something.

there is a dyno report showing that removing the Ubend nets 5hp and 3mpg more.

hmm well thats good to know also. anyone got an idea about my last question?

i got no difference in noise for my ubend delete..to be honest i didnt even notice anything..hahah but i know its goot for the car.if you plan on changing mufflers sometimes soon,then get a philips screw driver and poke a couple holes in the mufflers,,that will give it a different sound. here is a sound clip......vrooooom vroooom haha j/k later guys> ~joe

what i have read when most people remove the resonator they replace it will a cherry bomb or equal muffler. But as studies show, removing the cat or resonator shows no real difference in flow then leaving it on.

I have a stock exhaust system with the resonator taken out. I put some flowmaster mufflers on and quickly took them off and put stock ones back on. Just because I wanted a nice smooth, quiet ride. I still have the u-bend also. I did not have the resonator put back on though. Its alot louder than stock I would say 2 to 3 times louder than stock. It dose have that drone sound as Bnaylor said. I just took a 1000 mile road trip and it gets annoying. It seems like the faster you go and harder you step on the gas the exhaust gets quiet. well hope this helps somewhat.

i got no difference in noise for my ubend delete..to be honest i didnt even notice anything..hahah but i know its goot for the car.if you plan on changing mufflers sometimes soon,then get a philips screw driver and poke a couple holes in the mufflers,,that will give it a different sound. here is a sound clip......vrooooom vroooom haha j/k later guys> ~joe
thanks for all your input. also as GTPSPEED said, i was thinking if that might be a good idea or not to just poke some holes in the muffler to make it a little louder.

I Dont Think Most People Will Tell You Its Good,but If You Going To Get New Mufflers Soon,then Why Not Try Haha I Would.but To Warn You Haha I Tend To Do Alot Of Stuff Off Kilter,as My Joeflo Intake I Made It,and I Also Went Ahead And Took Out The Tb Screen And I Was Swayed Back And Forth By Many People On That One.but Me Being Me I Did It Anyways Hahah The Joeflo Is Great Cheap Works Good,and The Screen Has Caused No Problems Yet So I Would Say Do Whatever You Want,i Dont Think Its A Huge Deal To Poke A Few Holes Seeing That You Will Get New Ones Soon Anyway Why Not? Haha..tough Choice I Know But Hey Its Your Car.thanks ~joe PS,,HAHAHAHA YOU MIGHT WANNA WAIT UNTILL BOB LETS YOU KNOW HIS OPINION CUZ HE HAS ALOT MORE KNOWLEDGE THAN ME,OR GTPDAD ETHER ONE THEY BOTH SEEM PRETTY WELL VERSED IN THESE CARS..OK LATER AGAIN HAHA ~JOE

yeah i dont think im going to be getting new mufflers any time soon, thats why i just wanted to start with the other stuff before the mufflers like the resonater for different sound.

Ok so heres the stock setup under my car as of right now, i want to know what things look like. did i label everything right in this pic? http://i15.photobucket.com/albums/a367/pctvman/exhaust.jpg

From front to back it goes, Cat, Resonator, U-bend and then mufflers. The U-Bend is the peice that curves around the Spare tire area. In-Between the resonator and mufflers. I belive in your pic that you have the muffler labeled as the CAT. That pic is from the passenger side correct????

actually thats from the driver side, sorry i forgot to mention that

ok Than. the CAT and resonator are correct. The U Bend is behind the resonator

ohh ok i'll make note of that then. thanks.

Timeout guys. Now you've got me confused....lol. :confused:

Exhaust manifolds, then exhaust downpipe to CAT convertor, CAT convertor, then ubend/rear 02 sensor after the CAT, then the resonator and then Y split to mufflers and then tailpipes.

How much for a u-bend pipe and who did you buy it from? Did you guys have a muffler shop install it and how much to have the u-bend installed? thanks
Scott

u-bend delete at local muffler shop $80,,includes pipe and replace 02,,well here in boston that is.

Timeout guys. Now you've got me confused....lol. :confused:

Exhaust manifolds, then exhaust downpipe to CAT convertor, CAT convertor, then ubend/rear 02 sensor after the CAT, then the resonator and then Y split to mufflers and then tailpipes.

yeah thats what i thought, cause i searched google for a u bend and it always showed that peice

How much for a u-bend pipe and who did you buy it from? Did you guys have a muffler shop install it and how much to have the u-bend installed? thanks
Scott

I had mine done by a mom & pop muffler shop. Cost was $50 with the straight pipe and 02 sensor bung and included labor.

BTW - Technically when you get rid of the u-bend it is called a u-bend delete.

I had mine done by a mom & pop muffler shop. Cost was $50 with the straight pipe and 02 sensor bung and included labor.

BTW - Technically when you get rid of the u-bend it is called a u-bend delete.



i was going to get my U-bend and resonator deleted. but the guy told me that he couldnt promise that the O2 sensor wouldnt break when trying to remove it. and i told him i didnt have 100 bucks for a new one so i just got the resonator removed

i noticed at idle it sounds alot deeper and more like a V-8....a very quiet V-8 that is haha. but yes get the resonator removed. but like the guy at the shop said make sure you have the money to buy a new O2 sensor just in case...

and why is everyone getting confused on where the U-bend is....for god sakes its in THE SHAPE OF A DAMN "U"

haha true true. so my picture labels were right then

I talked to a muffler shop about doing the u bend delete, they said their might be a clearance issue with th O2 sensor....Guys who had a muffler shop do this install have any problems with the 02 sensor?
Scott

I talked to a muffler shop about doing the u bend delete, they said their might be a clearance issue with th O2 sensor....Guys who had a muffler shop do this install have any problems with the 02 sensor?
Scott

you have to let it sit to the side. you cant have it be vertical. it wont fit

you have to let it sit to the side. you cant have it be vertical. it wont fit
good to know.

AND also...
i noticed at idle it sounds alot deeper and more like a V-8....a very quiet V-8 that is haha. but yes get the resonator removed." lol i think that is the answer ive been waiting to hear as well, what should i have in place of the resonator and where do i get it??

good to know.

AND also...
lol i think that is the answer ive been waiting to hear as well, what should i have in place of the resonator and where do i get it??


ok when i went in there this is how it went for me

Vince- theres a U shaped piece of pipe under my car i want that and my resonator taken out and just a straight piece of pipe in place of it

Midas- well we cant gurantee that the O2 sensor wont break when we take it out. do you have the money to replace it if it breaks

Vince- no i dont have the 100 bucks to do so. just remove the resonator then and then leave the U-shape piece in

Midas- ok well even if we took the U-bend out the O2 sensror would have to sit to the side because the purpose of the u bend is so the O2 sensor would sit vertical. but its not necesary for it to sit vertical.

so yea basicaly all you tell them is if they can get the O2 sensor out without breaking it, you want the U-bend and resonator replaced with a piece of pipe or just have the resonator removed.

alright sounds simple enough, thanks. ill probably just have the resonator removed for now. do you remember how much it cost for just the resonater job at midas?

alright sounds simple enough, thanks. ill probably just have the resonator removed for now. do you remember how much it cost for just the resonater job at midas?


well in the end mine winding up costing me 200 because like a bunh of numb nuts when they lifted my car they put the lift arm right on my under glow tube and shattered it. but they only charged me 75 for the job. you can prob find it cheaper. hell all they do is cut off a pipe and replace it. it only takes like 10 mins. but like i said depending on where you go i went to Midas.

yeah 75 bucks aint too bad, ill search around then and see where i can get a good deal, i mean hey i'd even do it myself but i dont have a lift and welder.

Alright so i found a good exhaust shop a neighbor of mine reffered me to and they should be able to do it for under 100 bucks which is good. im wondering though, what would i get a better deeper sound with in place of the resonator? a glasspack or just a straight pipe? or would there be any difference in sound? keep in mind im not looking for more power just yet, only better sound, and my car is ALL stock.

i cut the u-bend and resonator off my buddys 2002 gtp and welded in pipe and it sounds pretty good nice rumble could be louder tho

Alright so i found a good exhaust shop a neighbor of mine reffered me to and they should be able to do it for under 100 bucks which is good. im wondering though, what would i get a better deeper sound with in place of the resonator? a glasspack or just a straight pipe? or would there be any difference in sound? keep in mind im not looking for more power just yet, only better sound, and my car is ALL stock.


yea like i said it rumbles nicely but it could definetly be louder haha. i think putting on a glass pakc might bring out the sound of V-6 to much and you might not like it. its up to you though i know that im not really gonna do to much to the exhaust on my car because basicaly until you get a heads up package done its gonna sound like a beefy civic. regardless if you spend 100 bucks on the exhaust or 1000 on a corsa. itll sound like a ricer.

hmm, alright yeah ill just go with the regular straight pipe then

Don't forget the straight pipe will need a standard 18mm X 1.5mm 02 sensor bung installed for the rear 02 sensor. Unless you plan on wasting money for a 02 simulator or like getting a SES light and P0420 DTC. Good luck.

do i have to get a sensor even if i leave the stock u bend in place?

do i have to get a sensor even if i leave the stock u bend in place?

Why do you want to leave the u-bend in place? That doesn't make sense. Have them make a straight pipe that goes from the output of the CAT to the Y section split before the mufflers since you have decided to delete the resonator. If the 02 sensor bung is positioned properly it will work just fine and the 02 sensor will be OK. Use your old 02 sensor.

i geuss if i would be better off to delete the u bend as well with the resonator then i might as well.

at least remove the Ubend.

i geuss if i would be better off to delete the u bend as well with the resonator then i might as well.


like i said though make sure you have the money to buy an O2 sensor in case it breaks i dont know how rusty it is on yours or anything but it might break coming off. O2 sensros arent cheap...at least more expensive then the mod your trying to achieve. its better off to do the U-bend and res. delete but make sure to face the possible concequences. :popcorn:

I had the u-bend removed and replaced with a straight pipe with a bung welded in for O2 sensor, they were able to use the the factory sensor with no problems---------------Scott

so ill remember to ask them about the O2 sensor issue then as well

so ill remember to ask them about the O2 sensor issue then as well

if anything does happen to it. tell them just to skip it and youll go without. buy an O2 simulator from www.pfyc.com some people dont like them like bob(bnaylor) but i know of a few people who have them up front and in back and have no problems. the simulators are like 20 bucks Vs an O2 sensor for like over 100 just an idea. not a requirement.

if anything does happen to it. tell them just to skip it and youll go without. buy an O2 simulator from www.pfyc.com some people dont like them like bob(bnaylor) but i know of a few people who have them up front and in back and have no problems. the simulators are like 20 bucks Vs an O2 sensor for like over 100 just an idea. not a requirement.

How do you know I don't like 02 simulators? Invalid assumption. I would not recommend using one for street use but for off-road they work fine and a good alternative, especially if you have an exhaust cutout or uncap the headers. The purpose of the rear 02 sensor is to let you know that CAT convertor is working properly or not. Although having a simulator installed will probably not cause a fail on state emissions requirements a bad CAT will. Nothing worse then getting caught off guard and finding out you cannot pass emissions.

I ran a simulator for a few years on my GTP but I no longer need one because my Intense PCM is programmed with the option to disregard the rear 02 sensor and any possible DTC like P0420.

Also, you can get genuine AC Delco 02 sensors on Ebay for around $35. The 02 simulators go for around $29.99 plus shipping. If there is nothing wrong with his rear 02 sensor then the best thing to do is use it and keep the configuration stock less the ubend and resonator delete.

hey bob sorry about the mis-interpertation. when i read this

Unless you plan on wasting money for a 02 simulator or like getting a SES light and P0420 DTC

i kinda thought you were against them. sorry fortunately i dont keep a car long enough to have to worry about emissions. i keep it for about 5 months then i resell it for more then i bought it for :iceslolan but i think i might just run this GTP into the ground my girlfriend told me she would pay for the u-bend and res. delete for christmas for me. so thats cool lol. so im kinda glad im getting all these opinions on the topic