Originally Posted by nhogan
Hmm what secrets we talking about?
Mostly a bunch of useless tricks that are worth nothing on their own but hopefully add up to something.
It was basically because I and 2 other friends went up to see who's car is faster. It was a 01 Taraus 3.0L 24valve Duratec, an 00 Intrepid 3.2L and our LHS. On the street these 3 cars were pretty much a dead tie. Off a light, from a roll and up past 1/4 mile. Knowing it was going to be tight I prepped the LHS as my Grandmother taught me.
Emptied the car. CD's, maps, floor mats, baby seats, spare tire, jack etc.
With the lbs reduction in effect I also drove to the track with the fuel gauge on E. The OTIS read 0 km's to empty before I got there.
The tires were pretty worn. It may only be 1 or 2% smaller but a worn tire is less diameter than a new tire. Also pumped all 4 to 40 psi.
The engine is stock but I run Bosch Platimuns, a drop in K&N filter and use 5W30 Mobil One.
I also experimented a bit that day. Trac cont ON vs OFF. Off was faster.
Silencer IN vs OUT. In was faster.
Manifold Tuning Valve. Blocked open, blocked close vs left alone. Left alone was faster.
Disconnected air tubes to the throttle bodies. MPH was up but et was slower.
With the fuel tank almost empty I poured in 4L's of 94 octane on top of whatever was left of the 87 octane. That only slowed it down.
For the record the Tauras ran a 16.0 and the Intrepid went 16.1.