[I have no affiliation with anyone selling a VR6 supercharger] I've only
been in the AMS car, not an Eaton, so these opinions should be taken
with a grain of salt.
A few things which have been mentioned before, but are important to keep
OBD I vs. II: Not sure if it will make a difference with the Eaton kit
ND is developing, but the AMS kit requires conversion to OBD II. The
situation is even worse if you have a Corrado and/or or a VR6 w/
distributor. (You're basically S.O.L. for now, the last I heard.)
The AMS kit doesn't affect the intake path after the M.A.F. (ie, easy
return to stock, easy use of Schrick intake manifold). ND's Eaton kit
will require a modification of the TB/Intake area.
AMS kit replaces the factory serpentine belt tensioner (ie, constant
tension, all the time) Not sure about the ND set-up. Some folks I've
spoken to were concerned about this aspect. Not sure I would be, but it
could be an important design difference and I'd research it more
The Vortech charger may come on a bit later, but I'm not so sure I'd
mind. I'll admit, I don't have a lot of seat time in modded VR6's,
(I've only got a g-chip, modded airbox) but trying to hook up my car in
any sort of wet weather is an absolute biyatch. I'm not sure I'd mind
having a stockish VR6 to get me going around town and
shortshifting...then having some serious power come on in the higher
RPM's if I were feeling a little "sporty."
Other considerations: The Vortech will definitely make noise. Some may
like it, some not. I LOVED it. I think AMS should start a 1-900 line,
so even if you can't afford their kit, you can hear it.... ;-) For
folks on the East Coast, the fact that AWE will be installing and
testing the Eaton (from what I understand) would bode well for
diagnosis, troubleshooting, etc.
Bottom line of MHO....if I had an OBD II car, and I were considering
doing some serious engine mods, I'd likely go for the AMS kit. If I had
an OBD I car, I'd likely be frightened off by the OBD II conversion and
would head for the Eaton camp.
Luckily, I don't have a ton of cash burning a hole in my wallet. But if
I did, I'd probably do a 3.1 kit w/ Schrick intake and some sort of
Vortech kit.....and a Quaife. :-)
1993 Corrado SLC
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