need replacement magnaflow muffler...help
#16
Originally Posted by Kevin24
No you don't need all new pipes.what you have should be fine.
I dunno some say that you don't loose anything with a catback exhaust and others do with the flowmaster.
I used to have true duels with flowmaster 40 series and after i had this done i felt a big loss in low end power.I switched it around to the magnaflows and my truck has more power now than it ever has and i think it soundss better too.You also need to make sure that you get basically the same length muffler and the center is the same or you will be having to re do the pipes to make it work.
I dunno some say that you don't loose anything with a catback exhaust and others do with the flowmaster.
I used to have true duels with flowmaster 40 series and after i had this done i felt a big loss in low end power.I switched it around to the magnaflows and my truck has more power now than it ever has and i think it soundss better too.You also need to make sure that you get basically the same length muffler and the center is the same or you will be having to re do the pipes to make it work.
I'm not doubting you but I'm do not understand how Flowmaster mufflers cause a vehicle to lose low end power? Numerous testing has shown that straight through designed mufflers like Magnaflow flow better than chambered mufflers like Flowmaster. That being the case, it would seem that running high flow mufflers or no mufflers at all would cause more of a loss in backpressure and more loss in low end power or torque?
#18
bottle nose effect?
What is the bottle nose effect? is it bad if i get a muffler that has a inlet or outlet thats too big for the pipes im using? because with the muffler i have now that they put in it looks pretty clear that the flowmaster muffler im getting rid of was in fact too bug the pipe was simply welded in to make it fit the bigger flowmaster muffler. would it be more beneficial to get a 2.5 or 2.25 inlet muffler instead of the 3 inch or does it not really matter all that much??
thanks alot
thanks alot
#19
Originally Posted by mdwilli
Kevin,
I'm not doubting you but I'm do not understand how Flowmaster mufflers cause a vehicle to lose low end power? Numerous testing has shown that straight through designed mufflers like Magnaflow flow better than chambered mufflers like Flowmaster. That being the case, it would seem that running high flow mufflers or no mufflers at all would cause more of a loss in backpressure and more loss in low end power or torque?
I'm not doubting you but I'm do not understand how Flowmaster mufflers cause a vehicle to lose low end power? Numerous testing has shown that straight through designed mufflers like Magnaflow flow better than chambered mufflers like Flowmaster. That being the case, it would seem that running high flow mufflers or no mufflers at all would cause more of a loss in backpressure and more loss in low end power or torque?
The flowmasters use the baffles which hurts power while magnaflow uses a straight through design which is much better.The 4 converters make plenty of backpressure and maybe even too much for a short straight through muffler to hurt anything.I honestly don't have all the facts about the design of flows creating a loss in low end torque.
I know there is a ton of info on here about the flows creating a loss in low end and a ton of people who have also had the same prob.Do a few searches,i remember finding one by Troyer explaining it well one time.
#20
laxwarrior i think what he means by bottlenose is that the pipes inlet is bigger than the outlets.I don't know how much of a diff it will make.Usually you would have a smaller inlet than the outlets.Can you take a pic of your exhaust underneath??It's been so long i can't even remember what the stock exhaust size was on our trucks??
#22
#23
I think it is 2" or 2.25". Since you do not want to change your piping, i'd just get the muffler that's the same size piping you have now. If you can, get under your truck and see what the diameter is. Make sure you check where nothing has been modified in the front and rear of the muffler.
Last edited by 2005 FX4 in Ca.; 08-14-2007 at 04:46 AM.
#24
Originally Posted by 2005 FX4 in Ca.
i'd just get the muffler that's the same size piping you have now. If you can, get under your truck and see what the diameter is. Make sure you check where nothing has been modified in the front and rear of the muffler.
#25
#28
I honestly agree with mgp32 about the maggies being louder than the flow 40's.I could tell it was louder as soon as i put them on.
What was wierd was the X-Pipe made it considerably more quiet!!!It was louder before adding the X-Pipe with true duels.It does sound alot cleaner with the X-Pipe now.
Brads984x4,I still have all of my cat's right now.I just cut the factory Y-Pipe to make true duels.I have kinda been dabating wheather to cut the rears or get 2 high flows in place of the 4 I just don't want to get pulled over all the time for loud exh so i am leaving it for now!!You want loud right???Cut your back 2 cats or get high flows instead of your oe 4.You will most likely loose alot of torque if you cut them all off.
What was wierd was the X-Pipe made it considerably more quiet!!!It was louder before adding the X-Pipe with true duels.It does sound alot cleaner with the X-Pipe now.
Brads984x4,I still have all of my cat's right now.I just cut the factory Y-Pipe to make true duels.I have kinda been dabating wheather to cut the rears or get 2 high flows in place of the 4 I just don't want to get pulled over all the time for loud exh so i am leaving it for now!!You want loud right???Cut your back 2 cats or get high flows instead of your oe 4.You will most likely loose alot of torque if you cut them all off.
#30
Originally Posted by corinthfireman4
My 14 " mag SIDO is definitely not loud. I was thinking about drilling a hole in it and removing some of the packing to make it loud. The sound is good though, just not loud enough.