yeah thats not gonna really happen, the only thing you may try is to get a new pipe and that may help!!! other than that adjust it and let it wind in first till the engine seems to be red lined and that may help get more of the "sound" your looking for. though i can hear mine switch its not like a dirt bike. good thing is this car is very predictable in my opinion once you get it tuned......you will LOVE the diff issues with this car Im almost ready to lock the rear diffs because mine keep coming out of adjustment and the plastic diff gears are WORTHLESS not only will you chew them but also chew the pinions in the diff. get the HEAVY DUTY and solves this problem PERMANENTLY. Ive read some guys modding OFNA LD3 parts to solve some of these issues!