Okay new to this forum I have a 98 expy Eddie Bauer 5.4 4wd with 200,000 miles not sure if its original motor or not third owner.

I have added CAI freeflow exhaust cat deletes to flow master with duals and have a edge evo ht programmer and running 91 octane and truck still don't seem to have the power it should

Any help or suggestions would be greatly appreciated thanks in advance