SC07

hey guys, i have this very annoying problem,
ever since i put in my trans inserts, whenever i downshift really hard and the revs linger up high, or take off with not quite enough gas (when it idles rough at like 1000-1200 rpm) i get this rattle that is def. coming from my exhaust.

i just put in my magnaflow a while ago and got it welded.

i dont think the exhaust is leaking and everythings tight. I checked the heatshield and i think some of the cheap clips were broken but nothing i could see what touching the exhaust

now, what should i do?
i dont think its leaking, and i hope i dont have a bad cat, resonator or muffler....i wish i could say it was the heat shield, but then again not sure...

i searched and didnt find any real definitive answer
any help?

thanks

codyss

When I put the new cat on my car I just barely bumped the heatshield unscrewing the o2 sensor and it made it rattle just of idle.

I would try putting the car on ramps and letting someone rev it and see if you can get a better idea where it's coming from.

SC07

even if the heatshield isnt touching the exhaust but is loose i could rattle right?

PlaysWitCars

my exhaust was rattling but it was my hanger off the muffler hitting the hanger off the car. A piece of rubber inbetween fixed my issue

SuperchargedSS

Broken baffle in resonator. Place car on jack stands, pound the resonator lightly with a rubber mallet. You will hear you're sound. And since you welded this on, it aint gonna be pretty. If its under warranty, make sure they send you a new gasket/hardware and not just the resonator. If you didnt weld this to the downpipe, you will need two new screws too in case you bust one. I broke my buddies bolts fixing his.. but it was a civic so who cares... j/k

SC07

no the magnaflow is just bolted to the downpipe, but its welded instead of clamped by the muffler.... what exactly do i need, a whole new resonator???

what would magnaflow need to send me?>/

SuperchargedSS

Well first make sure its the resonator. Tap it lightly with a mallet. If you hear that rattling sound coming from the resonator then you will have to saw it and send it back.

Why weld an exhaust on thats under warranty? Man, I feel bad for you having to deal with that crap.

SC07

i welded it because the clamp they gave me leaked....haha and i was to lazy to get a new one.

who here has returned a res. before???

will they send first so i dont have to be without one..???

im doing the return through where i bought it per magnaflows instructions....(modernperformance) so how do you think they will do it.?

SuperchargedSS

I dunno about magnaflow, but with Corsa they ship a new one to you first and you have 15 days to return the suspect part.

SC07

sameeee
new one will be here fri
yes.

SuperchargedSS

Good news. Its a good feeling to get this **** behind you. Good luck on the welds, thats going to be an ass pain. Do you know if they shipped you a new gasket? Screws? I would have asked for a gasket at the least.

SC07

their sending the whole kit actually

SuperchargedSS

Thats pretty sweet of them.