i have a 5at with a injen intake, plenum, ts ecu, cats, and a exhaust. is it normal for the exhaust to burble? when i sent in my ecu i mentioned to them that it did that, and after i installed the ecu it still does it. is this normal? does it mean its too rich or lean?

Ramo.....the burble sound of my exhaust happens when I let off the gas after reving up and the exhaust system is hot. I only run a K&N intake, but the ehaust note gets riper as milage accumulates. I'm at 10K on the clock at my burble is definately noticable.

I think it's normal. I believe that the event is there with a stock setup, it's just inaudible.

Yea thats normal....I think all cars do it...my old bmw e34 did that after we changed the intake and exhuast. And my friends g35 with the ztub & pop charger does it. It sounds cool too!

Hmm. I kinda like that burble on mine. Is burble bad?

2004.5 6MT Coupe Diamond Graphite/Loaded...no mods(yet)

Ok, gotta ask...

What the hell is burble?

Ivory Coupe 5AT
Z tube, K&N drop in.
Crawford Plenum and Fujitsubo Exhaust soon to come...