Here's the deal... Some guy offered me an amount I couldn't refuse for my Mugen Twin Loop axleback. So I jacked up the Si, started to untorque the bolts, and snap and crunch the bolts broke off. Anyway, I did this last Friday and since my new exhaust (Tananbe Super Hyper Medallion) will be here on Thursday, I figured it wasn't worth my time to get the bolts off, get new bolts, and put the stock axleback on. So since then, I've been running with no axleback. It's hella loud and annoying, but the weird thing is that I've gotten the best gas mileage I've ever had with this car. I still drve the same with occasional visits to vtec if ou know what I mean:naughty:. I'm not empty yet, but it seems like I'm on pace to get well over 300 miles on this tank.:thumbup: I never hit 300 miles per tank. Now I did just switch back to stock 15's, but I was also on 14" steelies for 2 weeks prior, so that has nothing to do with it. Just kinda weird....