Ok Here is what I got so far... 07 VTX 1300s. DEEEEP Clayton root mod. I put 6 holes I think, while looking in the bottom hole I discovered a freeze plug. After destroying the freeze plug she got really loud and I am happy for now with the sound. The back pressure is gone and the exhaust flows really good. I lost a lot of low end tourque and the HD's I used to pull away from now spank me. I went with the K&N air filter and the DJ stage one jet kit. As per instructions in thw kit, I put the 195 jet and set the pin to the 4th notch and installed the shorter spring and turned the A/F screw 3.5 turns. Now the bike runs good and I did notice an increase in low end power but not enough. I know I have good unrestricted flow out but I think im still restricted with the in. I'm thinking about the Decap on the air box and running the 200 jet. My questions are this...
Do I need to do the scar mod now with the jet kit installed?
Should I go with the 200 jet?
Will Decapping the air box void the warranty?
What else can I do to get more low end power?
Is there a aftermeaket coil that works good?
Thanks in advance.