After-maket Computer Chips To Enhance Performance

A friend of mine works at a speed equipment wholesaler. He told me there are
chips for sale covering nearly every car on the market that enhance
performance of factory engines (improve speed and fuel efficiency... sounds
like an oxy-moron to me). Is this correct? There's GOT to be a downside to
this (risky?.... not cost justifiable?... something). What's the story? I'm
thinking of getting a 2000 or 2001 Concorde LXi and am wondering if the
chips are worth looking into.

 

Down-sides: 1. Not legal for street use in North America. (Can significantly
impact emissions). 2. Can, and most likely will, adversely impact some
aspects of performance. 3. May not deliver on any of the claims. 4.
Expensive.

Richard.

 

Also: may reduce overall durability of engine and driveline.

--Geoff

 

The story is simply this - the factory stock computer is programmed for
optimal
engine efficiency with the use of the standard garbage-grade 87 octane fuel.
(ie: Regular) Normally, if you put high-test 91-93 octane fuel in the car,
you
get no horsepower benefits.

What the performance enhancing chips mostly do is tune the engine for 91-93
octane fuel.
Thus if you use the cheaper 87 octane fuel the engine develops less power
than the
factory chip, but if you run 91-93 octane then the engine develops more
power
than the factory chip.

Most of the performance enhancing chips also remove any rev and speed
limiters
that may be in the factory chip, so if you can only go 100Mph with the
accellerator
nailed to the floor, now you can perhaps go 120Mph.

Of course, the higher octane fuel costs more, so what it boils down to is if
you want
more power you pay more money. There's no magic bullet here.

Ted