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After looking, it appears as though this muffler (14815) is a "straight through" muffler.
Yeah im up in canada so shipping costs suck ***. The plenum spacer is a good $400+ to get here which is just great. One mod at a time i guess lol.
Ive gotta get my car to the exhaust shop anyways cus the heat shields on the y pipe are rattling like hell. Going to see if they see anything wrong with it from a professional perspective.
Youre looking at an axle-back..
We are talking two different mufflers here now.
Coupe middy is in the middle of the car.
The magnaflow has a 2.25 inlet.
If i am correct the correct setup should be 2.5 at minimum.. too much back pressure may be shooting out the packing.
Its like blowing out of a tiny straw vs a water hose (theory)
Thanks for the reply. Im actually really interested in buying a motordyne plenum spacer so might be pulling the trigger on that soon. I think my final choice is going to be to stick with magnaflow for now. I bought this car for $3k so im not looking to put an insane exhaust on it and the magnaflow does sound amazing. Just wish there was a way to keep the good sound on it and keep it from blowing out eventually. There must be a solution.
You'll need to go with a turbo style muffler instead of a straight through design. Dynomax makes a pretty good one. And it will still outflow a stock muffler.
You'll need to go with a turbo style muffler instead of a straight through design. Dynomax makes a pretty good one. And it will still outflow a stock muffler.
Thanks. Got a part # by chance? Or any sound clips?
maybe bring a couple of 2 chamber (flowmaster clone) Totalflows with you. You should be able to buy both on Amazon and get them welded in for less than $100 total. Vibrant resonators or anything else like that would work too with a larger budget but I like doing things cheap as possible for a quality result
I have the cheap aluminized steel Magnaflow style ones and although they have some surface rust after 2 years on my winter beater G they'll easily last another 5 years of winter driving at this rate, big fan for the price.
Last edited by cswlightning; Jan 16, 2020 at 06:33 PM.
Thanks for the replies guys. I did just get my replacement magnaflow in the mail yesterday and have an appt with the muffler shop tomorrow to get it installed and do something about the heat shields on my y pipe rattling.
After doing a bunch of research, i just couldnt find the same exhaust note that i wanted unless i spent more money on a catback, or something nicer which doesnt make sense for me at this point.
So im going to give magnaflow another try, hopefully it'll last longer because apart from the drone, it sounds amazing and i really like it. Its not annoying at all when just cruising, its when you get on it or when there are more people in the car is when it gets annoying.
Well, only time will tell i guess. Also, i heard somewhere that if you're washing your car, getting water on a glasspack can also cause it to blow out sooner. Something to do with hot muffler/cold water. Is this true?I go to the carwash every now and again to get all the salt off of my car, and to keep the muffler from rusting. If this is true, ill stop spraying it.
Honestly dude I'd just sell the replacement magnaflow on ebay and add additional mufflers to your existing Magnaflow. It's not really blown out, it just doesn't muffle sound like it was when it was new, and the new one will do the same thing in 6 months to a year... With the one you have, it's already broken in and isn't going to get any louder, kind of a waste to throw it away.
Honestly dude I'd just sell the replacement magnaflow on ebay and add additional mufflers to your existing Magnaflow. It's not really blown out, it just doesn't muffle sound like it was when it was new, and the new one will do the same thing in 6 months to a year... With the one you have, it's already broken in and isn't going to get any louder, kind of a waste to throw it away.
Oh i wasnt throwing it away. Keeping it for sure lol. I did see one thread where a guy custom welded some type of magnaflow muffler as a resonator, with a 14816 as the muffler and said it sounded pretty good. I think the thread was something along the lines of "quest for vq sound" or something.
There is also a magnaflow catback for the g35, magnaflow #16861 which also sounds good. But i dont really want to spend $1500 on an exhaust just yet haha.
Not sure what to do at this point. Im even thinking of keeping the new one aside for now, and playing around with my current setup to make it sound better. Any suggestions on a resonator replacement to muffle the sound a tad and bring out that nice vq sound again?
Ill put in a sound clip tomorrow of what it sounds like now.
Well, i think my final decision is to keep the magnaflow on lol. It sounds pretty darn good when i took some soundclips today. A bit loud, but it brings out that vq note under load and at higher rpms that i didn't even know i had lol. Sitting in the cabin with the windows up is probably the reason. Heres some clips:
