Vararam Hemi Ram-AIR - Manual (Page 9)

"Hemi speed secrets"
Tips from our test trucks covering 1500-2500 vehicles
1. Keep it cool- Hemi's heat soak like crazy,so if you are looking for every ounce
install a lower thermostat and distilled water mixed with coolant or red line water
wetter. About a 70-30mix is good.
2. The transmission- these things are finicky, for max performance run them as cool
as possible ,otherwise they will shift up early during 1/4mile runs around 80mph
(programmers help here) or use a Torque converter lockup device
3 Watch the wheelspin- it kills the 1/4 mile and 0-60mph numbers greatly, just walk
it out and then hammer the throttle for good consistent numbers( don't Torque up,
unless on a sticky track)
4. Relocating or installing a resistor in the air temp sensor harness- this is an old
trick however don't try this with the VR unit as our location point and the system
itself are always getting cold air and we have located this in best possible location.
5. Use good gas ,meaning name brand ,don't try to save pennies here your Hemi
will love you for it.
6. Oil- Use Mobil-1 or Royal Purple synthetic and add some Lucas oil additive,this
keeps the valve train and lifters quiet so the knock sensors don't accidently pick
up the wrong acoustic.
Allow your truck 100-200 miles to dial in to the new airflow. The truck will start rich and then
lean back down accordingly. We look for the fuel mileage improvement on most trucks ,if data
logging is not present.
You may need to disconnect the negative end of the battery for approximately 2hrs or more
for the ECU to relearn properly.