Traynor Amp Distortion- Need Help!

I bought a traynor YCV 20 over the summer for 650$ and i like it not overly for the price. i like alot of distortion, like crunchy-bluesieer stuff and this things distortion is kinda a let down there. i was looking at pedals but ive also heard different tubes can make a big difference too. i recently bought a wah too and i can barely tell its hooked up to my amp on the distorted channel it barely makes a wah sound. Anyone have suggestions for me, regarding help with the distortion or wah? any suggestions regarding pedals or tubes? Please help! thanks