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I don't know which did the most, but I went from 13.5mpg to 19.5 hwy after denso plugs, the update to Sniper's special forces and a factory tech valve body.
I have a Excal ordered for my truck. I should get it Thursday. I'll give it a test for mpg after a few days of playing with it. I gained about 2 mpg with the custom tuned Superchip I have now.
RIsuperduty...how is the CAI, cat back and programmer ombo working for you...what kind of acceleration gains did you get...sorry for the off topic post
I've run a couple of tanks of gas through my truck now. It doesn't seem much stronger than the custom chip I had on it. I didn't expect it to since the chip did a good job in the power department. I ran mid 15s with the chip & my other mods. It does shift better & gets around 16 mpg in the city. Thats one more than I was getting. I haven't made a highway trip to check the mileage yet. I'm happy with the SCT so far.
I ordered a power pro by hypertec from 4 wheel parts, they sent me the wrong one. so I returned it and had them send me a superchip. I have not received that one yet. I know a little about superchip, my cuz put it in his 02 f-250 diesel, with 39"s it made a big difference
I ordered a power pro by hypertec from 4 wheel parts, they sent me the wrong one. so I returned it and had them send me a superchip. I have not received that one yet. I know a little about superchip, my cuz put it in his 02 f-250 diesel, with 39"s it made a big difference
if you got a gasser , you are not going to see the gains of a diesel