[s-cars] Cody Payne survives dyno...

[Mihnea Cotet]

I've checked graphs and Cody's chips out while on the phone with him last 
night, there is definitely more to be had there. I'm not even looking at 
the figures that the dyno has put out, just the curves, and I'm telling ya, 
stay tuned for more. The dip at 4.5-5.2k RPM is something I'm having a hard 
time figuring out, but I'm almost sure it isn't timing (pinging/knock 
sensors) related, maybe more boost control related... Now we'll see with 
the next chip I'll do for Cody if I'm right or not... Cody's car produced 
over 300 ATW (mit SAE 1.22/1.23) from 4200 through 6700 RPM, let's see if 
it can do the same with 350 ATW and a peak around 400-ish...

I'm not really of Joe's opinion, Cody's engine has Pauter rods that should 
handle the BMEP's involved by this turbo pushing 28 psi, so I'm not worried 
about the rods wanting to check how weather is like outside the engine 
block. Turbo/Intercooler efficiency are great so all this tells me that if 
the turbo can flow more air with more boost, he can have more power/torque 
with appropriate, although remote for now, tuning.


Mihnea




In a message dated 11/13/2004 7:19:45 PM Mountain Standard Time,
<http://www.audifans.com/mailman/listinfo/s-car-list>mlped at qwest.net writes:

 > Dave, don't you have data for the same turbo, but off Ian's car?  Do the
 > profiles match up between the two installs?
 >

Cody's car is hitting sooner... but the temps were considerable cooler for
Cody's run.  Other differences... Cody has an FMIC, the RS2 exhaust cam, and a
stromung.  Despite these differences, the charts profiles are virtually
identical, except for Cody's 4.5-5.5k rpm dip, where his curve almost bumps 
into
Ian's.  Ian's peak boost was 24psi, and it wasn't maintained well.  Better 
boost
control should net Cody some more power... and if the dip can be figured out,
he should find a better peak.  Cody's dyno curves fluctuate a great deal
compared to Ian's using the same turbo.
Dave