You'll have to wait for more/better replies on the exhaust, personally I think it's opened up too much. You do have the o2's installed, I assume ? What ever the case, I don't get better MPG's with the rockers, but I definitely felt a difference in power, for the better.

 

The exhaust should be fine. Stock exhaust is 2.5in.

 

Yes, o2's are still installed. Had to put a non fouler in the downstream to get the cel to turn off. The only intake mod is the k&n filter, I don't see how that would make such a big difference.

 

Except for no muffler and some tiny cat at the end ?


It isn't just that, and as I stated, it won't make that big of a difference. It's the whole package.

 

He likely means tiny cat as in a short one.

Or at least I hope. Giving him the benefit of the doubt here...

 

I hear ya, I'm not quite understanding how it's setup.

 

I was assuring you that I still had my o2's in place, and yes, by tiny I meant short.

 

My exhaust is shorty headers no cat then y'd out the back with no muffler with 2.25. I lost a TAD bottom end but it pulls harder up top.

 

So you have a cat between the o2 sensors?

 

Yes, same spot as original cat