Exhaust suggestions
#17
Do not know. Not my area of expertise, it just did.
I'm a tad "focused" on such things- measure my mpg at every fill also. Someone else would have to explain that. Was it going from 2.5" out to 3" out? Losing the stock "oil drum" of a muffler for the Super 10? Again, don't know.
I'm a tad "focused" on such things- measure my mpg at every fill also. Someone else would have to explain that. Was it going from 2.5" out to 3" out? Losing the stock "oil drum" of a muffler for the Super 10? Again, don't know.
#18
Would anyone happen to know why the earlier years have four catalytic converters? And for those who have emissions standards (like me), if I decided to have some exhaust work done, could I remove at least two and still pass the visual inspection of exhaust as well as the emissions test?
What year truck are you? I know on the 97-03 you can remove the front 2 with no problems, but i think its the other way around for 04-05.
#19
Would anyone happen to know why the earlier years have four catalytic converters? And for those who have emissions standards (like me), if I decided to have some exhaust work done, could I remove at least two and still pass the visual inspection of exhaust as well as the emissions test?
#20
Do not know. Not my area of expertise, it just did.
I'm a tad "focused" on such things- measure my mpg at every fill also. Someone else would have to explain that. Was it going from 2.5" out to 3" out? Losing the stock "oil drum" of a muffler for the Super 10? Again, don't know.
I'm a tad "focused" on such things- measure my mpg at every fill also. Someone else would have to explain that. Was it going from 2.5" out to 3" out? Losing the stock "oil drum" of a muffler for the Super 10? Again, don't know.
#21
No reason to cat-less on an on-road vehicle. The hi-flow cats out there have minimal effect on performance, especially with the power levels this engine is capable of making in most trims.
#22
I notice right off that the engine seemed to have more mid-range and slightly less low end- it isn't working as hard at highway speed.
Like anyone else, I know my truck. Nothing else was done to it at the time, still running same canned tune.
Anyway...also looking to have cats replaced...noticed some rattle underneath in vicinity of one, wonder if it might be done. Thanks for the mention Dunesgirl- gonna look into a rework under there.
#23
#24
#25
It's just what I went with at the time, cost was a factor, and I ain't flashy or nothing. Not married to any brands really- just don't know enough about 'em yet. At first I was sorta bothered, but as the computer adjusted itself over the next couple weeks, I barely notice now. Plus...I figure I ain't looking to race off the line, but I do have to ride the highway to work, hunt, camp, etc. so the trade-off isn't all that bad. I can live with it, but who knows what the future brings. I still don't use the radio much...the exhaust note is my radio for now.
I'll keep studying though!
#26
Guessing not a fan?
It's just what I went with at the time, cost was a factor, and I ain't flashy or nothing. Not married to any brands really- just don't know enough about 'em yet. At first I was sorta bothered, but as the computer adjusted itself over the next couple weeks, I barely notice now. Plus...I figure I ain't looking to race off the line, but I do have to ride the highway to work, hunt, camp, etc. so the trade-off isn't all that bad. I can live with it, but who knows what the future brings. I still don't use the radio much...the exhaust note is my radio for now.
I'll keep studying though!
#27
Would anyone happen to know why the earlier years have four catalytic converters? And for those who have emissions standards (like me), if I decided to have some exhaust work done, could I remove at least two and still pass the visual inspection of exhaust as well as the emissions test?
Utah (or Colorado?) has pretty strict emission standards, don't they? If they're picky and thorough, they may or may not, but in Texas, they don't actually climb under the truck and look unless there's a reason to. Each state, and more importantly each individual inspector, is completely different. Some don't care, do the basics, give ya sticker. Others climb all over the thing and make you fix every last imperfection. Most of the time, Magnaflow hi-flows will pass inspection and won't trigger a check engine light, but it has been known to happen. Just a risk you'd have to take, perhaps after talking to someone that knows exactly how Utah's tests are.
Last edited by KMAC0694; 05-07-2014 at 11:05 PM.
#29
#30
I always thought the 4 cat system was left over from the 5.4 always having 4 cats. Maybe not directly using the same exact parts, but maybe the concept of having 4 cats was just a transition because that's what the old engine had.
Utah (or Colorado?) has pretty strict emission standards, don't they? If they're picky and thorough, they may or may not, but in Texas, they don't actually climb under the truck and look unless there's a reason to. Each state, and more importantly each individual inspector, is completely different. Some don't care, do the basics, give ya sticker. Others climb all over the thing and make you fix every last imperfection. Most of the time, Magnaflow hi-flows will pass inspection and won't trigger a check engine light, but it has been known to happen. Just a risk you'd have to take, perhaps after talking to someone that knows exactly how Utah's tests are.
Utah (or Colorado?) has pretty strict emission standards, don't they? If they're picky and thorough, they may or may not, but in Texas, they don't actually climb under the truck and look unless there's a reason to. Each state, and more importantly each individual inspector, is completely different. Some don't care, do the basics, give ya sticker. Others climb all over the thing and make you fix every last imperfection. Most of the time, Magnaflow hi-flows will pass inspection and won't trigger a check engine light, but it has been known to happen. Just a risk you'd have to take, perhaps after talking to someone that knows exactly how Utah's tests are.