Fasten your seat belt. Holy sh_t. It Rips!
Install went well. About 4hrs, no real issues. Old one came off easy. M2 went on easy. Only problem is an exhaust leak from the top of the flange where the precat meets the Main cat. All in all it's good.

Boost guage showed 13 max. No spikes. Do spikes occur later or is it check it and forget it?

Thanks
Bake

 

That's not the first time I've heard about this problem. I want to get the M2 pipe, really convenient since they're 10 minutes from my house, but not if it's like this. Anyone know what the deal is with this?