Stock mani and cats; XE stock is 2 pipe to muffler and 1 out, so we Y jointed the exhaust prior to muffler and then stock tubing out to chrome tipstock exhaust mani`s and cats? did you just cut in the muffler? huge difference between headers and stock exhaust outcome.
Obv not a ton of HP gain with just a muffler swap, but I feel a some more torque from takeoff than I did before, did a real nice peel out this morning on the way to work
Have a CAI and the engine is audibly 'breathing' better between the two additions.
Next week my programmer arrives, so I think the proof will really be in the pudding when get the tune I want on it.