AnswerID: 237492 Submitted: Wednesday, May 02, 2007 at 20:03
howesy
replied:
I had a 2.8 with aftermarket turbo and the fuel economy didn't change one iota from standard when I had to push the c#@p out of it all the time. It made heaps more torque and pulling hills was simple. If you cut the boost back manually it will just take more pushing to get it going. Do yourself a favour and just install a boost guage and you will see that the setup you have when pushed really hard will only boost a maximum of 7 maybe 9 lbs and as you get to cruising your boost guage will show 0 to 2 lbs. You see it has a vacuum servo that controls the waste
gate which in turn affects the boost delivered by the turbo so if your cruisin your boostin stuff all anyway and it will boost when required. get the guage and you will see Its a fun thing to watch.
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