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Professionally tuned
Stu,
I just wanted to say that you have a
really nice Z06, it made 354 RWHP, and 347 RWT on the dyno today, very
nice numbers for a stock 2001 Z06 with just an Intake upgrade, and the
screen still in the MAF. I checked through our library of dyno runs and
found a 2002 Z06 to compare to, we had a stock 2002 Z06 that made 345
RWHP and 335 RWT. The twin flow intake you installed works really well
for power at WOT and driveability. I know for that kind of increase it
is a definitely noticeable on the street, not just at WOT but
driveability also. IMHO the twin flow is a good choice, along with the
Halltech style, and other top and front breathing intakes. The Z06 with
the front grills, has an added bonus having the front openings behind
the grills for added fresh air. I'm partial to the front breathers
compared to the bottom breathers, especially down here in Florida, it
rains a lot here in the summer months and there's always standing water
when we have downpours. We have replaced about 7 or 8 engines from
customers driving in certain areas with high standing waters with bottom
breathing intakes and hydrolocking their engines when driving through
and sucking up some heavy water.
Again, IMHO most hi flo intakes for Corvettes work really well, one main
point nobody has touched on is the main increase is from decreasing the
restriction in the air intake track. In C5's the airbox had 4 small
holes on the sides of the box for air entry, then the Z06 had the NACA
style opening in the front of the box for more flow, the decrease in
restriction makes it easier for the engine to pull fresh air in, also
anytime you can get colder air into the Intake you can make more power.
Anyway, I just wanted to give you an update and say it's a really nice
car.
Thanks, Geoff.
Next Level Performance
Well after the base run yesterday we started tuning today and found a
couple of things, it does have shorty headers on it hence the extra
power increase, and it did have a tuner program in the car. We were able
to pick up the torque number up to 355 RWT because of it being too lean
in the low and mid range, but the top end was close to 13 to 1 so we
didn't see any horsepower gain, up to 355 from 354, all SAE numbers. The
dyno graph seemed to flatten out between 5500 to 6500, and I am thinking
the valve springs are starting to get a little week, the HP number
should be up a little more than the Torque number. But that will be for
a later date as Stu is already planning on upgrades to the engine
combination, always thinking of more (way to go Stu). Definitely a
really nice car Stu, Congrats. Geoff.
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