I am running stock Zeniths which work great but am facinated with the triple setup. Sorry to hijack the thread.
hi steve,
although surely no substitute for trips, if you replace the stock air filter/box with the k&n cold-air intake, the sound from our fi cars under hard acceleration is DRAMATICALLY improved. here is the thread with detail.
http://www.e9coupe.com/forum/showthread.php?t=9673
best,
alanmcg