Specifications

(9) Start the engine but do NOT step on the accelerator pedal...let the computer learn the new initial voltage
setting.
(10) Turn the engine off and close the hood...drive away of you want...your throttle response should be
much more precise now.
Here are some pictures for the various steps:
Factory TPS Sensor w/Brass Inserts
TPS Sensor in the vice (ready to
drill)
Modified TPS Sensor Holes
TPS Sensor reinstalled with
washers
Some have claimed that the TPS Sensor is adjustable on the actual throttle body without any
modifications...this is completely false. There is no room for adjustment unless you drill the inserts out.
Denso-Iridium Spark Plugs
We spoke with the folks from Denso at at the SEMA show on the Iridium plugs and decided to purchase a
set ($8.50/plug approximately). We're using the recommended IQ16's in our '97 Dakota and, quite
honestly, they don't perform any better than the Autolite 3923's (or 3922's) I normally run. We'll check out
the long-term fuel economy as well...but the initial results aren't too promising.
Update - 11/12/01: We've put about 100 miles on the plugs and they do seem to work better on the
highway under light acceleration. Please keep in mind that we are testing them on a
Supercharger/Nitroused/Intercooled V6 and the performance increases from the plugs may not be as
noticeable as on a normally aspirated engine. Our personal opinion, not a bad plug at all but don't see
spending over $8.00 per plug. We're still keeping an eye on the fuel economy so there will be one or two
more updates on that parts of the test.