[dentexpowerstroke]

If you are planning a stage 2 you will have to have a good bit of supporting mods, If you can't afford all the supporting mods go with stage 1s, which will even tax some stuff. Another option is get a set of ad injectors from someone and run those, they will be a big step up from what you have in an obs.

 

[dentexpowerstroke]

From what I've heard, people don't tune them to run as a split they run them as a single, it's just the higher cc they want. Btw it's 140 not 135. Go with correct supporting mods before you just tune down, if you have to tune down that obviously means you don't need then injector size you got.