i see the direct app for a civic is the SL9's but people have tones of the SL4's, called RC and they said that the SL4 is made for domestic and k-series motors, but are people still using them on thier hondas, no problem wtih fitment? IE: my motor is a D15B with a Z6 intake mani. any help is appreciated, thnx

 

up for a little help^^

 

^ once again