1999-2009 [Subscribe to Daily Digest] |
Sure you can up the power to around 210Hp
on a 1999LPT engine, and this will be fine
if you don't drive at full boost for hours
but only for a few minutes every time.
Yes, the 2000 engine got the oil spray on
the lower part of the pistons to cool em
down, and thus this allows for longer continuous
power on 2000 LPT and Aero engines.
As such you can safely get around 280Hp~310Hp
from an Aero engine, depending how you modify it
and this will still result in an engine that will
be OK for around 100'000 miles. The 2000 LPT can go safely
up to around 230Hp.
The reasons why I selected the 260Hp kit from Hirsch are:
Same max boost, there is no increase, altitude capacity maintained
Larger intercooler
Optimized air flow to turbo, which allows it to compress
more air at the same boost level as before.
And this will last longer then 100'000 miles.
Thus the engine gets more O2 through cooler air which
is more dense, which is made possible because the turbo
moves more of it, without working harder. But of course,
at full load the mass of air that goes into each cylinder
is higher and the engine works harder... but as I said it
avoids problems that you would get by using higher boost levels and
very hot compressed air, which increases the risk of
knocking during the cylinder compression cycle.
You should also understand that many upgraded ECUs run a leaner
mix which produces hotter exhaust gases which produce higher
exhaust velocities which in turn make the turbo work faster
and suck / compress more air. This kind of pure ECU tunning is used
by those that don't change the Intercooler and don't optimize
the air flow to the turbo, the problem is that a) you damage
the exhaust valves and b) you can damage the turbo.
Most VW 1.8T ECUs do this, and many SAAB ECUs do the same thing...
My opinion "Keep clear from this stuff"... cause what you need
is more efficiency at the compressor side and compressed
air that has a lower temperature... cause when you do this
the increase in exhaust mass at same temperature can
be handled by the valves and turbo at no major negative
effect to a certain point, because the SAAB engine was
designed to move more mass at higher altitudes as the
lower O2 content of the air requires this. Thus the exhaust
system and all are perfectly able to handle this.
There are also those that produce that try to gain boost
by running a richer mix, which creates higher exhaust volumes
with little increase in temperature... nice but it burns
loads of fuel and hardly passes any emission tests.
Many Audi S4s use this kind of chips. You can see it
on the freeway when they produce large clouds of black smoke
when the accelerate hard... yuk.
And 260Hp using the same exhaust is realistic as the 2002
Aero has 250Hp simply through a modified ECU. The 10HP gain
I have comes from some minor optimizations as the larger
intercooler and also the new ECU and optimized air flow
to the turbo so it works more efficiently.
So to get more power you need:
a) if possible a bigger intercooler
b) a sportsfilter and an optimized air flow to the turbo
c) an upgraded ECU
d) depending on the level of power a sports exhaust
e) a bigger turbo if you wish lots more power along
with a new air box and all...
Thus... well yes there are safe ways to optimize your engine
performance, and yes these are not the least expensive when
you look at HP gain per $ spend.
Regards,
Coolknight
2000 9-5 Aero 5spd 260Hp kit from Hirsch
Delta Integrale EVO II CAT 5spd 212Hp AWD
posted by 212.77....
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