had the same problem with the intake but i got this intake
https://www.ebay.com (commissions earned)
its not supposed to be for my car which is a 99 protege 1.6 but i installed it and it sounds boss. had to cut out the mass airflow sensor and plug the ita sensor hole in the intake caz i got have it because the maf and the ita sensors are together in my model. but trust me do it and it will sound great.
anyways anyone have any clue about a muffler caz i want a muffler to but dont nkow how its supposed to work caz i would have to cut oof my old muffler and weld on the new but the new dosent come with hangers osi dont nkow how that works,or im supposed to get a catback muffler which is not that cheap.like over 100$ .