The site ??
The site will remain live
as a source of info on the more popular subjects of the C20LET e.g.
4WD system etc but also keep an eye on
www.c20let.co.uk where the info
from here will also be available to help make that site THEE
UK source for C20LET info brought to you by ppl that know it thru
personal experience who have nothing to gain or to sell.
Well the Unichip is finally
The car went upto
Storm Engineering (who
are the UK distributors for the Unichip) to get re-wired in with the
Boost Control Module and Water Injection Control Module and all mapped
to the car.
Couple of things meant it
couldn't be mapped BUT the install is complete and ready to be plugged
into the computer/rolling road and get mapped.
Aquamist 2C Water Injection
system is fully installed and wired to the Unichip as is the boost
All that is required now is
for an uprated turbo (end April/May) to be fitted to allow higher boost
levels to be attained more efficiently and then the car is going back to
Storm Engineering to be mapped finally !!!
The install is of top
quality so 2 thumbs up to Gerry and Martin at Storm for the professional
look and quality of the work. Well chuffed.
Been a while since this
bit has been updated and a couple of things have happened in the
meantime. As mentioned in the last update (just below this one) a few
"add-ons" were planned -
The first is the addition
of an front mounted intercooler which, after many weeks of designing,
modifying, mounting and general faffing about, is finally on and
working very well. More details can be found here as it contains quite
a few pics - Intercooler Info
The car was taken to Star
Performance yet again on one of its "open" rolling road
days to see what difference the intercooler made to the car. A lot of
discussion and speculation had been made on a couple of the boards
concerning whether a chargecooler or intercooler is the best way
forward for turbo tuning.
Well as of 25-11-01, the
results/differences between all 3 choices were in and these can be found here -
The 2nd modification planned was the fitting of a UniChip complete
with additional Boost Control Module. A couple of er.... hiccups have
postponed this so another update will
follow as soon as possible.
Took the car on the
rolling road at Star
Performance again a few weeks back (26-09-01) to find out if the
chargecooler has made any improvement.
Pleasingly enough, it
has. The update rolling road chart can be found on the Current
Spec and Pics of my Car pages but I
have put them here side by side with the original rolling road report
showing the car as standard before any modifications -
Car at 204BHP and
Car at 220BHP and 235lb/ft
As you can see, the car has gained
16BHP and 17lb/ft of torque with just the intercooler in place so a
worthwhile investment for anyone considering it
More updates to follow as, over the
next few weeks, a couple of other modifications are ready to go.
The date should probably in fact be
17th AND 18th of June as we (myself and Russ) managed to finally get the
chargecooler kit fitted at 01:00 AM on the Monday morning.... shame I had
to get up at 5am for work the same day though huh ?? =)
I got the kit from Gavin at
Performance at a very reasonable price i.e. cheaper than Courtneay
and Regal who are the only other suppliers
For those people not
familiar with chargecooling, the kit basically takes the charge of air
from the turbo and channels it through a metal container (heat
exchanger). This metal
container has a radiator element in the centre where cold water is being
pumped through and is, in turn, fed from a small pre-rad sitting behind the
front grill. This heat exchanger cools the charge of air as it passes through
it, making it more dense meaning
that more air can be squeezed into the chamber at a given time.
In simple terms, the ECU picks up on this
and injects more fuel which in turn gives more power. The most important
part though is that the Motronic ECU in the C20LET also
measures the charge temperature going into the engine so that it can decide how much boost to
safely allow. A cooler charge allows the ECU and engine to run more boost safely
without detonation, and so gives more power.
The chargecooler fits
neatly into the engine bay -
The result ?? The car does
pick up a lot better after it has been sitting in hot weather and there
is no power fade after it has been driven hard which you normally get as
the manifold and turbo heat up to extremely high temperatures which
increases charge temperature
The most important
advantage it has given though, is that the engine is now fully prepared
for future modifications as it is now running a lot cooler.
There are a "few"
small modifications to go so watch this space......
First modification to the
car - The Boost Gauge
Managed to get it all
fitted in around 2-3 hours. Its also wired up to the radio lights so
that the boost gauge is lit when you turn the sidelights on. Looks very
Gauge sits in corner of dash very
For anyone wishing to fit
their own boost gauge to their own Cavalier or Calibra Turbo then follow this
link - How
2 fit a boost gauge to a Cavalier/Calibra Turbo
Of course, what would any
modification be without the obligatory test run.... it has to be done...
its one of them unwritten rules ;)
Took the car to my own
"private test track" to check the boost levels and
acceleration. The car over-boosts to around 0.8 bar (11.7psi) before
settling back to 0.6 bar (8.9psi) for normal boost.
I have managed to get it to
reach 1 bar (14.73psi) on over-boost and settling to 0.75bar on standard
but, for fear of under fuelling etc, I have turned the actuator down to
achieve standard levels. Still, not bad for a standard car as this is
the boost levels that SuperChip owners are aiming for.... I just saved
myself £200 and the car flew and picked up quickly even when cruising
at high speed and then pressing the accelerator =)
Has made me think about
what I now want to do with the car. Must get the fuelling and air sorted
then we can go ahead and turn it up as the C20LET can handle upto 16psi
of boost with no problems.
*** Pictures of the
install will follow when I have taken delivery of a new digital camera***
Picked up the car from Mike
Kane today and nearly had my first challenge after only 30 minutes !! -
Was driving back from
Inverness after dropping Mike off to pick up a hire car. Around half
way between Elgin and Inverness, 2 cars (Rover 220GTi and a Golf) were
cutting in and out of the queue behind us both.
They then overtook
myself. It was a shame I had only driven the car for about 30 minutes
and that the previous owner (Mike) was in front or I would have taken
off after them.
Don't get me wrong, the
car is so easy to drive that it would have handled me no problem......
Would have been a little too cheeky to roar past the seller at crazy
speeds on a single carriageway tho =)
He did mention afterwards
that I should have went for it....