Originally Posted by
guntek18
could use some tuning advice.
I just got a used gx7, compression feels pretty strong.
* what plug should i use?
* what shim combo on 20% ?
* should i tune top or bottom first ?
* only two pipes available (jp-1 / jp-4)
* dare i go as low as the 6mm. reducer or will it be hell to tune ??
Note: weather here is in the high 70s' to mid 80s'
ANYTHING??
For plug the 97t o'donnell is whats recommended and what most of us use. As far as shims, take a look at the go engine usa website. For tuning you need to find which needle you have. If its the short needle you just tune as normal. For the long needle you need to tune the LSN first and then tweak the HSN as needed. Use the guide on massivemods website as a guide. For tuned pipe, the dynamite 086 is cost effective, good looking and does a great job. The smallest reducer i'd mess with is the 7mm, but thats me, you can try the 6mm if you want.
http://www.massivemods.com.au/index....5237dc97b55454