i have a d15z1, witha few d16z6 parts. but it makes a weird howling noise when i turn off the car. adn whenever the motor warms up, it makes a whistling noise when i stop or have the car on nuetral. its real annoying. what can the issues be?

 

pretty tough for anyone to help you without hearing the noise themselves, a "howling" or "whistling" noise could really be anything. I suggest you just take the car to a shop and have some professionals take a listen.