mine pops and crackles like a bowl of rice bubbles. I love it, only had flames twice(i still run cats) from my exhaust. What we've done though is richen up my top end and a bit under trailing throttle to preserve engine on speed runs(depending on tempt its a safe guard of it leaning out to much).
The pops can be heard on my launching videos on my website when i lift off gives a bit pop pop crackle pop.
Got car booked in today to get a leak fixed(at the flange after extractors/before cats) and a balance pipe put in(deeper note hopefully) but also to get a cat replacement pipe made up for track days. No-one has wanted to make me up a set of screamer pipes yet
I'd love a set, straight off the extractors exiting out the sides.. My old auto ute used to run hi flow cats(proper 1's with enlarged entries/exits etc and not a gutted cat) and it was loud as hell.. popped and crackled a bit(hadnt fiddled with ecu at time) but also droned alot less in cabin due to the cat not causing restriction.
Personally if you want to run without a cat, get a replacement pipe made up for track/drag work and "accidently" leave it on at times.. but dont be suprised when you get reamed if caught.. Alternative would be get some cats, gut them and fit them yourself.. no exhaust shop wants to touch the cats as if they do, they cop a $25,000 fine or there abouts(i've asked em ). Overall though be careful, while its legal in some countries(nz, various states in USA) its highly illegal in australia.