I now own an 07 civic lx 4dr with manual tranny. Anyway to add hp with out f/i and with out the loud car? I am not opposed to f/i just curious. Just sold my S500 AMG and I miss the power. I also do not want to attract any attention to my car with loud pipes due to working in an area of town where cars like that get stolen. I also do not want to **** off my HOA when i return home. I am just looking for a bit more power to the car, quietly. Any help is appreciated. Thanks.

 

basically no, unless you swap in the si engine or do massive engine modifications.

 

super charger would give it great power and be very quite
but you will need to do some work to achieve that.