1jzgte m112 really loud intake noise! Help!
Hi guys, ive just finished supercharging my toyota 2.5 1jzgte l6 engine in my mazda rx7 and the intake is sooo loud its driving me insane! Instead of the twin turbos ive got an eaton M112 which i believe was made for a mustang. Its all running perfectly producing plenty of boost but i just cant stop the high pitch rush of air going into the s/c, even at idle when its just recirculating! Ive got a stock toyota supra air filter in line and pipework off to the inner wing and its alot better but not at all quiet! The airbox is made of ali which prob isnt ideal. The s/c got the stock bypass valve which works fine but is giving me a massive dump valve effect noise which i dont like every time i come off the power. Now the prob is i am seriously limited for room under the bonnet so a massive plastic airbox and pannel filter id out of the question. There is only about 4" of 3" ali tube between the airfilter and s/c which im assuming is the prob but i just dont have any room at all to run 3" plastic ducting all around the bonnet! Is there anything i can do to stop this noise! If i put a stupidly restrictive filter in could i damage or overheat the s/c? Maybe some kind of resinator or something? Anything but its got to be small! Would really really appreciate any sensible advice, can prob put a pic up sometime if that would help see how little room ive got. Also all you guys with 112's if you take the filter of the s/c and run the engine is yours rediculously loud?? Ow and its a new s/c and producing plenty of boost so am assuming its all good.
Thanks guys. Rich