new exhaust not loud
04-15-2007, 03:01 AM
#41
4th Gear Member
Join Date: Feb 2006
Location:
Posts: 1,667
RE: new exhaust not loud
ORIGINAL: blownslt
I don't know about your setup but............my rear o2 sensors are located after the rear cats (or in my case where they are supposed to be). And I agree that the front sensors control the air and fuel mixture or ratio, I didn't think I had to make that point....I was just trying to state that my engine light has never came on and the sound is outstanding........thats all.
Dude you're actually wrong. The rear o2 sensors are located between the front and rear cats. If you cut the rear cats off the car has no idea since the rear o2 sensors are located before them.
I guess I'll have to take a pic of my stock midpipe tomorrow to show you that you're wrong.
04-15-2007, 03:02 AM
#42
4th Gear Member
Join Date: Feb 2006
Location:
Posts: 1,667
RE: new exhaust not loud
ORIGINAL: sleeping stallion
ok come on guys stop fighting to each his own.
since my o/r/ with 40 isnt loud enough for me u guys mentioned the lm1. any lead to a good price. i just wanna get mufflers not the whole catback. does anyone have any clips
ok come on guys stop fighting to each his own.
since my o/r/ with 40 isnt loud enough for me u guys mentioned the lm1. any lead to a good price. i just wanna get mufflers not the whole catback. does anyone have any clips
04-15-2007, 03:48 AM
#43
5th Gear Member
Join Date: Feb 2007
Location: Hawaii
Posts: 2,211
RE: new exhaust not loud
since when did the second set of o2 sensors come between the cats? btw, the first set of "cats" are not actually cats. they are a preliminary element. the second pair is actually the cat. that is why the o2 sensors tap off after the 2nd set. they feedback to the computer that the o2 mixture is good and that the cats are doing their job.
for most people, they will never put enough power to the ground to justify cutting off the cats. only high HP motors truly benefit from it. our OEM cats are actually pretty good at flowing exhaust. why 'f up your vehicle for no true benefit (I'm talking about inspections).
and exhaust tips do have and affect on the exhaust tone. my Magnaflow Single in, Dual out on my 5.4 F-150 sounded okay with just the pipes running out the rear. wasrather quiet. I was kinda pissed at first, thenI put the 3.5" tips on it, it got a hell of a lot louder. I've had people think a Harley was running when they heard my truck.
for most people, they will never put enough power to the ground to justify cutting off the cats. only high HP motors truly benefit from it. our OEM cats are actually pretty good at flowing exhaust. why 'f up your vehicle for no true benefit (I'm talking about inspections).
and exhaust tips do have and affect on the exhaust tone. my Magnaflow Single in, Dual out on my 5.4 F-150 sounded okay with just the pipes running out the rear. wasrather quiet. I was kinda pissed at first, thenI put the 3.5" tips on it, it got a hell of a lot louder. I've had people think a Harley was running when they heard my truck.
04-15-2007, 01:34 PM
#44
3rd Gear Member
Join Date: Aug 2006
Location: South Louisiana
Posts: 633
RE: new exhaust not loud
ORIGINAL: Tylus
since when did the second set of o2 sensors come between the cats? btw, the first set of "cats" are not actually cats. they are a preliminary element. the second pair is actually the cat. that is why the o2 sensors tap off after the 2nd set. they feedback to the computer that the o2 mixture is good and that the cats are doing their job.
for most people, they will never put enough power to the ground to justify cutting off the cats. only high HP motors truly benefit from it. our OEM cats are actually pretty good at flowing exhaust. why 'f up your vehicle for no true benefit (I'm talking about inspections).
and exhaust tips do have and affect on the exhaust tone. my Magnaflow Single in, Dual out on my 5.4 F-150 sounded okay with just the pipes running out the rear. wasrather quiet. I was kinda pissed at first, thenI put the 3.5" tips on it, it got a hell of a lot louder. I've had people think a Harley was running when they heard my truck.
since when did the second set of o2 sensors come between the cats? btw, the first set of "cats" are not actually cats. they are a preliminary element. the second pair is actually the cat. that is why the o2 sensors tap off after the 2nd set. they feedback to the computer that the o2 mixture is good and that the cats are doing their job.
for most people, they will never put enough power to the ground to justify cutting off the cats. only high HP motors truly benefit from it. our OEM cats are actually pretty good at flowing exhaust. why 'f up your vehicle for no true benefit (I'm talking about inspections).
and exhaust tips do have and affect on the exhaust tone. my Magnaflow Single in, Dual out on my 5.4 F-150 sounded okay with just the pipes running out the rear. wasrather quiet. I was kinda pissed at first, thenI put the 3.5" tips on it, it got a hell of a lot louder. I've had people think a Harley was running when they heard my truck.
$40.00 to remove rear cats versus $150+ (cheapest O/R pipe), $50 mils....... To get basically the same sound.
Exhaust tips DO make a difference in Decibels...Think of it as a trumpet. Play through a trumpet with a 2" hole and then play through a trumpet with a 3.5" hole....IT WILL BE LOUDER!!!!! I can attest to this because I wanted a different look on my L and went with these pee shooter looking pipes (2.5")....It calmed it down from stock. I then went with the 4" slash rolled and OMG.....Night and Day difference.
Just my .02 on this topic
04-18-2007, 07:22 PM
#45
2nd Gear Member
Join Date: Jan 2006
Location: madison wisconsin
Posts: 246
RE: new exhaust not loud
thank you for the info, i would not have thought it would have been as big of a change in sound , as lets say a mid pipe, but i could see were it would alter it. ill keep my mouth shut from now on , sorry guys!!!
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