2004-2007 Cadillac CTS-V Performance Mods Discussion, Magnaflow install issues. in Cadillac CTS-V Series Forum - 2004 - 2007; Well first off this isn't my first rodeo with installing exhaust, but first purchase and install with Magnaflow. Ive had ...
Well first off this isn't my first rodeo with installing exhaust, but first purchase and install with Magnaflow. Ive had many go smoothly and fit perfectly with other manufacturers. The first thing I noticed is the exhaust hangers to do not mach, they show this on how the exhaust sits on the car. The main issue is the x-pipe to cat. Ive never had such an issue where the flange gasket will not seat properly giving me a hideous exhaust leak on both side. Ive tried numerous ways to fix the issue, unbolted, adjusted, pry here, hold here, move this and so on. I prefer not to modify or make a gasket for something that clearly states bolt on. Ive given in to were I am going to pay someone to align everything properly. Has anyone else had a similar issues?
Ive tried at-least 8 different methods of trying to tighten it. I even took my old resonator and bolted it back up without a problem. The donut looks as if its to big, or the pipe is to small. you'd think they would of matched OEM spec. Because the pipe clearly isn't big enough around the flange to make proper contact.
I just did this two days ago bud...I have two different studs from driver to passenger and found the driver side (with a nut on the stud) did not work I sprayed them with penetrating lube and went to lunch came back and vicegrips pulled them right out no problem. I then chased the threads and cleaned them real well and built my own studs.
I was going to drill a hole for each and do a nut and bolt (pulled out my carbide bits) and got under the car and was just about to drill them out when I decided to stop and hit the hardware store to see what options I even had.
I did find a stud kit there but none of my sizes, but I did find some all thread and I made some studs from that a few days of driving I put the car back on the jack stands and made some adjustments and tweaks and tightened it all up. New studs holding strong thus far, I am sure there is loads of different ways to fix this but I happened to do it this way and it is leak free.
FYI stud threads are (M10 X 1.5 pitch) I had some trouble finding 1.5 pitch - was mostly 1.0 or 1.25
Good luck man!
P.S. I spent the most time trying to align the tips of the exhaust (B&B Catback) spent quite some time adjusting hangers as best as I could with the exhaust already installed, it is night and day difference comapred to first install. They were way out of wack, now I can notice a slight misalignment with drivers side but only if I am trying to find issues I will fix it someday
Sweet deal! Thanks a bunch! I plan on tackling the car Tuesday. I have also thought of doing a nut and bolt combo instead of studs. Good thing is I tracked down a set of studs as you mentioned in case I do indeed go that route. that little bit of info saved me probably a half day of running around!
You'd think with the money spent they would give accurate directions on hardware needed.
I finally have the tips set just about even on mine, they're off a tad, but as good as I'll get it!
Thanks again! I'll report back on Tuesday with my outcome!
Yea I thought about it when holding the drill, do I really want to drill them out. Not saying it would be fine to do so, just thinking that there has to be an easier way. I like the way mine looks, I will check it out in a week or so to make sure all is well. I wish my tips were 100% perfect but there not, I will post a pic and video of it sometime later on. I am still unsure how I like the sound, it sounds good but I really was hoping for a little more sound.
I went with new studs since I already had them lol. After a torch, welding nuts on old studs I felt like kicking and screaming of how much other work I didnt want to do. I went with a different donut gasket, worked like a charm. I cannot stand the tips on how offset they are! Will anyone notice? Probably not, but I know! The sound I say is good for it being a Cadillac! Something toned with power and room for the kiddies!