Trumpet is good.... but if you're new into 4AGE, I'd reckon the engine will require a rebuild after 3 months straight using trumpet. U need to take care the engine like a baby and service it every 3000km when using trumpet. Also, proper tuning needs to be done otherwise you're making more noise, but less power.
FYI, the Lexus LFA also using trumpet inside its plenum.
My Lovely Car with trumpet for 3 years and so ...
No rebuild required and it last without any filter on the trumpet ..
Yes, engine oil get dirty black by 200km of normal driving ..
Tuning damn important (FPR enough), else choke to not moving ....
Just my old junk ...



