Spacers arn't really the solution lads, you MIGHT get away without an EML for a while, maybe even for a long time, but ultimately, if you've decatted an AUM / AUQ, you'll get a light on unless you have the threshold altered in the map.
AGu on the other hand, knock yourselves out, no lights for you boys

I'm surprised to hear people saying they're loud still, I push 350bhp of gas through mine and it's no louder than a non res miltek at all!