In a message dated 98-09-17 10:58:35 EDT, you write:
<< I'm seriously considering a Vortech for my RT but I just read a post
about problems with detonation with more than 4 lb or boost. In my
experience 4# is very little pressure for a 9:1 compression engine. Even
if we do have iron heads it should not detonate with a 5 lb blower. >>
I run my boost retard on 0 on my Ram in any conditions , days, nights, etc...
no audible detonation.. usually keep it at 1 for safety. Stock Computer. I get
6psi at 5200rpm.
I also run with a guy that has a '97 4x4 that has no boost retard. He gets
8-9psi if he lets the truck shift, and 10-11 if he holds it in gear w/ his
2.75" pulley on his S-trim setup. Sometimes during the day or on hot summer
nights here in FL, he'll get some detonation, but that is easily cured by
higher octane fuel. He also uses a 160 deg thermo compared to my 180.
This may be different on the R/T, but I doubt it.
<< Are you guys using a colder spark plug? Vortech tend to calibrate their
FMUs to run on the rich side so I don't think you're running too lean. >>
I use the stock heat range plugs for now. Regular Autolites... My truck runs
real nice and rich under boost, too... FYI, The FMU in these kits are 12:1.
ttyl
Patrick
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