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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