Quote Originally Posted by Fast355 View Post
Throw the Harris chip in the garbage can and start over with a stock file for your truck.

If you are running without a cat that cam will always have a slight fuel smell to it around idle.

Assuming you are running the stock 61 lb/hr 350 injectors the 18 psi spring, much less the 14 psi spring is low. Going to need more like 22-24 psi to support the 350-375 HP that engine is capable of.

You need to get a performance oriented Vortec spark map like the one I have posted numerous times on here in the timing maps. From there you need to up the fuel pressure to atleast 22 psi. Set your injector flow constant to match the new flow rate. From there you will need to dial in the VE table.
Have you set your NEW injector flow constant? You need to do this first and can calculate it bottom of page here: https://www.witchhunter.com/injectorcalc1.php

What are you doing to the VE tables that made it move from 90 to 105? Don't get me wrong...I want you to dumb it down so I know you know what you're doing.