04 zx 10 with a 07 swingarm help!!!!!
i recently bought a 04 zx 10 with a 07 ext. swingarm they just cut the head pipe off under the swingarm, to loud so i put a 07 head pipe on with a custom stainless pipe to a micron can looks good sounds good but pops and cracks at 4500 rpm when riding will free rev no issuses! the converter is still in the 07 head pipe possible to much back pres. don't know i would like to figure out a better exhaust system and run a high mount exhaust or possible a shorty like on the 08 anyone with any ideas. thanks???????