I have now been driving around with the JCW exhaust equipped with the MyMini/Minspeed resonator eliminator for a month and feel I can now give a true assessment of this mod. For those that missed it, check out the MyMini Winter Dyno Day posts (see links below) for information on my installation.
The resonator eliminator gives the JCW exhaust a deeper and throatier sound. It is louder than stock, but ONLY when you get on the gas. I find that the burble is much more pronounced and louder. If you are one of those MINI owners that hates the burble (or ìback-firingî as some call it), than this mod (or most any exhaust mod for that matter) is not for you. I have found a way to control the burble, however. If you keep the revs consistent while shifting (ie. matching revs), you can actually suppress the burble for the most part. If you want more burble, simply press the gas a bit and let off completely. It really is quite a bit of fun playing with this aspect of the exhaust and enhances the motoring experience.