It has single to the muffler to a single in dual out muffler even before I out duals on it it still lacked power with the same muffler single in single out
It ain't that its lacking power when towing it seems like its lacking power all together especially when its in overdrive. On a very slight slope in over drive I lose speed and have to down shift
When I got it it was compley stock and since I have added all that was listed and still seems like it hasn't gains anything. I'm wanting a little more to help pull 16 foot car trailer not nothing street/strpi
Okay so new to this site but I have a 98 expy 5.4 4wd Eddie Bauer I have CAI, cat deletes, flowmater duals and edge evo ht programmer running 91 octane. Had had complete tune up including coils plugs oil change o2 sensors.
My question is that it don't seam to have the power it should and help...
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