370z engine blown

Originally Posted by Fabsnoop

Just went to the dealership to take a look at the broken HFC. The whole entire honey comb of the cat was broken off. It was just moving around freely. The tech at Nissan said "the only reason Nissan decided to replace the motor is because this motor is known for having oil consumption issues." I asked him if he was certain that the cat was the reason the engine failed..He said "it's one of the reasons.." I swear they'll never give you a for sure answer to anything. Should i go the test pipe route, have the hfc replaced (probably the worst idea since permanent viagra), or put the stock cats back on?

Originally Posted by UNKNOWN_370

Leave the cats stock. Just use a non-res exhaust. It will be the same difference in sound and hp. Either No resonators on the exhaust on a stock cat or test pipe on a resonated exhaust will still give similar gains. Unless you are changing everything from the intake, headers pipes and exhaust. The switcharoo won't make a big difference. The only true difference is forced induction.

Originally Posted by Jordo!

That's a really interesting idea -- I didn't think the resonators on an exhaust as restrictive at the core of a cat. If true, that's a good way to stay OEM and green, but pick up lost power. Would be neat to see a dyno comparison of the two set ups.