Originally Posted by rlu_tech
Just wondering if it would be worth upgrading to the Atlas 40 FICM tune on my '03? I don't plan on adding a tuner any time soon. I would be looking for some better MPG, and to help the BAD turbo lag on my truck.
Given how the EGR system works on these, tuning alone won't help as much as deleting the EGR cooler. Deleting the EGR cooler did wonders for my throttle response. Don't throw away the EGR valve until you know whether or not your stategy needs it for proper VGT cycling. The increased throttle response from my IDP FICM tune was nice, but not near as big as deleting the EGR cooler.
sent from a dumb guy with a smart phone