??? Ok, can someone explain to me why my fuel mileage dropped? I will try to explain what I had done. After I had a power Puck and 4" exhaust installed my in town and short trip mileage went from 16-17 up to about 18mpg. Towing 11K went up from 10.3 to 13mpg. Now I put a scotty II on and in town and short trip mileage went up again to between 20 and 21 ;D . Highway mileage after the Scotty II jumpted to 23-24 ;D All these figures are from Odometer and Computer and when I keeping my foot out of it. Now for the sad part, as you know it come with a HY35 turbo and I had a HX35 put on to go with the air box to drop pyro temps and it did, but if I run 70mph on the interstate w/CC the mileage has dropped bact to about 19.5mpg. In town and short trips it has dropped to 17.5 :'( . The guy who installed the turbo and owns a turbo shop says he don't understand why the drop.
I did change my fuel filter and that didn't make a difference. Also the wastegate on the turbo is blocked off. Would that have anything to do with it. Don't get me wrong, I'm satisfied with the performance, cause it really scoots ;D
Any ideas from the pro's???

 

Ok, come on now, somebody has got to have some kind of advice or somekind of idea about this. Surely i'm not the only one thats run into this situation. Thanks in advance.

 

Don't have an answer but have a simular problem. After putting my 4" exhaust system on my mileage dropped 1+mpg no matter how easy I drive. Checked and change everything I could think of. So far no luck. If I figure it out I will E-mail you. If you find out something I would like to know what it was.

Gene007
WarWagon

 

Sounds like when you changed turbos you now have a drop In cruseing boost which Is common when switching to a bigger exhaust housing that your hx has.WOT boost may be higher but running down the highway may be lower.Try adjusting your boost pressure higher.

 

BoyTurbo, I don't know how high I should go. I have no trouble hitting 32lbs of Boost. Might could go higher, just haven't tried it.
Thanks