I am interested, as a Dutch guy I can read German :sneakya german tuner did all that shit for rn12. eliminate exup, gutt the cat, different stacks, in almost all possible combinations dynoed it and published it.
i have the pdf here. anybody interested? unfortuately it?s german language.
Akra Y pipe
K&N air filter
okay fellas, i know this thread is old and by now you should have some feedback for me. i am debating if i should remove the exup on mine. i did a lot of searching and reading but no strong facts to back anything up. some say by removing exup the lowend becomes even weaker with mine setup, meaning dont do it due to stock headers not having the same air flow as Akra headers from a full system.
others say it will help and save weight.
what is you conclusion on this. i will have the bike apart and would like to do it now so i dont have take it apart again for this mod.
I think it was almost 2hp up top but there was a better increase from about 5k up IIRC.so you have stock headers, do you have any # going from with exup to exup delete?