For those with MAC's\MAC ORY
For those with MAC's\MAC ORY 
Just wanted to share information in hopes of helping people in the same situation I was in. My MAC ORY collector was a little bit smaller than my Borla Intermediary pipe ... couldn't get it to seal ... the original narrow band clamp just would tighten it down enough to seal it.
I hauled *** down to NAPA and picked up a 2 3/4" long (or round) stainless steel band clamp. It's about 4" wide ... torqued it down and it literally molded like a glove to the contour of the collector and I-pipe ... perfect seal!!!! I was so glad because I had thought about either a custom ORY for about $200.00 or welding the damned thing and messing up my Borla I-pipe. 
Hope this helps somebody
I just delt with this to day. I just put on a new GMMG last night & the I pipe had a pretty good gap in it. I tightned it all the way, it still had a little gap. So I took a cut off wheel on a die grinder, & cut a few small slits down the I pipe, about 1.5'' down. Under the clamp. That takes some metal out so it can collapse down to size. Worked fine. Good info though. 
I had thought about doing that. The difference is this. I plan on going true duals eventually and I didn't want to take metal out of the I-pipe ... for when I sell my Borla catback. My I-pipe (as most I-pipes do) has slits cut into it but they are just not wide enough ... thought about widening them a bit to do the same thing you did. You probably plan on keep your GMMG permanently. I'm glad you overcame the issue 'cause I know how it feels to cure such an aggravating issue, when it comes to exhaust. 
Thanks for the info! I went to Napa and ordered one of those band clamps and threw it on last night. It sealed it perfectly! I haven't heard my car with out an exhaust leak for so long, I forgot how good it sounded.
If it helped one person, it was well worth posting. I had nearly given up on
mine EVER being right with out an expensive solution. Thanks for posting the results. I'm glad it helped you.
mine EVER being right with out an expensive solution. Thanks for posting the results. I'm glad it helped you.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
