[Jack.p91]

Hi I have a quadzilla x8 eps and want to make it quicker. It's already derestricted but have been told to put and rjwc exaust and efi controller on it. Do you guys think the exhaust is worth the money or shall I just get the efi controller? Thanks Jack

[mayor hal]

Welcome to the board. I'm sure you get a lot of good answers to your questionsite by people with way more knowledge than me! 😊

[NMKawierider]

Welcome...wish I had the answers you need but I'm sure someone does.

[gfmoto]

Don't have first hand knowledge, but thinking, exhausts do help, but usually when paired correctly with any mod that gives the engine more hp. So if I were a betting man I'd say the controller would be more significant of a power mod than the exhaust.

[bigjimstewart]

Welcome to the forum

[Dipper]

Hi and welcome I've got the ejk fuel controller on mine along with a twin system and yes a little more power but more importantly the fuel controller has improved economy and smoothed out the running too and I also had the controller fitted to my previous x8 too and it transformed the running especailly in slow traffic and on take off all a lot smoother hope this helps all parts were source from grant @quadbike tyres ltd always very helpful