Saturday I will be going to Tampa for a custom dyno tune. My current mods are TBE, Cone filter, TTP o2 housing, Nesei licp, ETS 3.5inch intercooler, hallman mbc 23-24psi. Will the Evo IX fuel pump deliver sufficient fuel for this setup or do I have to install a walboro before getting tuned?

 

You should be fine with your mods. You could add a pump for additional security but the stock pump will flow for your requirements.

 

I thought it would be sufficient, just making sure since my free time to install a 255 is very short before saturday.

 

Try to install it if you get a chance it will be worth it (shouldn't be more than an hour or so even if you never done it before) or if you don't feel comfortable doing it have the same shop you are going to do it for you, you might not make all the power you can because of lack of fuel, I seen it happened before. If you are paying tune + dyno time might as well make the most out of it.