do not buy the BAT y, especially if you are buying headers! EVEN IF the msds y is only slightly worse than the BAT (i dont think there are any proven comparo's saying its better or worse), why waste the extra money? especially when you already have a y-pipe that is better (when optimized) than the BAT y. BAT y's will also void the warranty on your headers.
so to recap, if you are getting or have headers, do not use any other y than the msds or optimized stocker because:
-spend needless money on something that wont net any gains
-optimized stock is better
-will void header warranty
here is a great idea for spring zing. back to back dyno comparisons of someone with headers using MSDS vs. BAT y pipes. maybe even an optimized stocker too.
hell, we can use my car as long as i am not the one crawling under it to wrench on it.
