I thought this would be a fairly common setup, but I haven't heard of anyone mention it on their cars. Any opinions? Is it good? Does it suck? What can I realistically expect in additional RWHP with both -- about 20? I've heard that it's not very loud which is fine with me as I don't want something that's too obnoxious, but I would like it to sound more aggressive then stock. Unfortunately I haven't been able to isolate any sound clips. I'd love to hear opinions on it...