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Hey all! Recently bought a 2007 Z06 w/ 67k miles (only 4k on the build). Put the car on the rollers this weekend. It was a Dyno Dynamics which from my understanding often read much lower than others, but in the end is probably a less inflated number than a dynojet (please chime in if i'm wrong here). This was just 3 pulls to 150 mph or so, didn't adjust the tune or log anything. I have to say, i'm disappointed, was expecting somewhere in the 600 range N/A.
Am i wrong to have expected more? Granted these are all just numbers and track times speak (looking forward to next season for sure).
ENGINE
PRC 285 Heads (titanium valves, BTR springs, 70cc)
Wiesco LS7 forged pistons
(2.50cc, 4.125" Bore, 4.00" Stroke, stock 6.077" rod length) 12 to 1 compression
GFX Steel Top/Napier second ring set
King coated bearings
BTR Stage 3 LS7 cam
FAST LSXR 102mm intake manifold
FAST LSXR billet fuel rail kit
FAST LSX EFI Fuel line conversion kit
Ported Throttle Body (stock)
VR intake
Mighty Mouse catch can
ARP Hardened Head bolts
ARP Pro-Series Connecting Rod bolts
C5R timing chain
Innovative Dampener (6rib)
Stock Rods and Crank
GMPP Lifters
GO FAST
Nitrous Outlet stand alone fuel cell (C16 fuel)
Nitrous Outlet #6 plate kit
Nos mini controller
6an lines
EXHAUST
LG Coated Headers (1 7/8")
Catless Midpipe
ZR1 Exhaust
Mild to wild switch
I didn't see the AFR? Aside from the dyno run, was there a scan running on the car? Perhaps AFR is off and getting some KR?
The place i took it to just charged $100 for 3 quick passes. We didn't adjust the tune or log anything. Was mostly just to see where it's at with the current build.
I do have the HPTuners file with the Motor and Nitrous tunes (given to me by the previous owner), i just don't know how to read them...as it looks like you have to have the VCM suite installed in order to even open and view the files. Still not real time, but at least would have an idea of where it's at.
You are right though, there really isn't a way to know for sure without some scanning.
I use a dyno dynamics myself and these numbers are exactly where they should be given your setup.
For one the nt05r is the reason for the powerband falling off early. On these small roller dynos you need the hardest compound tire you can use. I see it all the time on these cars losing power and rpm on the rollers due to rolling resistance and traction loss due to tire temperature.
Fwiw I have a few C6Z06's making between 520-530hp on my DD that are running 9.70's to 10.0's depending on launch and traction...
I use a dyno dynamics myself and these numbers are exactly where they should be given your setup.
For one the nt05r is the reason for the powerband falling off early. On these small roller dynos you need the hardest compound tire you can use. I see it all the time on these cars losing power and rpm on the rollers due to rolling resistance and traction loss due to tire temperature.
Fwiw I have a few C6Z06's making between 520-530hp on my DD that are running 9.70's to 10.0's depending on launch and traction...
Good to know! I was wondering what others with a similar setup did on these dynos. Thank you.
Doesn't that dyno compare with the mustang dyno? Even though it's just a tool, I'd love to see the mph at the track. Also very curious as to how the car performs on the spray as well.
The place i took it to just charged $100 for 3 quick passes. We didn't adjust the tune or log anything. Was mostly just to see where it's at with the current build.
I do have the HPTuners file with the Motor and Nitrous tunes (given to me by the previous owner), i just don't know how to read them...as it looks like you have to have the VCM suite installed in order to even open and view the files. Still not real time, but at least would have an idea of where it's at.
You are right though, there really isn't a way to know for sure without some scanning.
I use a dyno dynamics myself and these numbers are exactly where they should be given your setup.
For one the nt05r is the reason for the powerband falling off early. On these small roller dynos you need the hardest compound tire you can use. I see it all the time on these cars losing power and rpm on the rollers due to rolling resistance and traction loss due to tire temperature.
Fwiw I have a few C6Z06's making between 520-530hp on my DD that are running 9.70's to 10.0's depending on launch and traction...
Welcome to the Corvette Forum Mr. Short, we need more real tuning experts here.
One thing I noticed was that the dyno-guy didn't have a big fan blowing into an open-hood front end. It may be possible that your intake air temperature was too high causing the ECM to retard your timing. Just a thought. Especially on the second pull, with the hood down, and not driving, it gets real hot under there.
One thing I noticed was that the dyno-guy didn't have a big fan blowing into an open-hood front end. It may be possible that your intake air temperature was too high causing the ECM to retard your timing. Just a thought. Especially on the second pull, with the hood down, and not driving, it gets real hot under there.
There was actually a large fan blowing on it thought the fan was on about a 3 foot stand and pointed down at the nose of the car. Probably didn't help much considering these cars breath from underneath as well as in the front and neither of those areas were really getting that much air. It was something like ~40-45 degrees out that day so it was fairly cool ambient temp.
There was actually a large fan blowing on it thought the fan was on about a 3 foot stand and pointed down at the nose of the car. Probably didn't help much considering these cars breath from underneath as well as in the front and neither of those areas were really getting that much air. It was something like ~40-45 degrees out that day so it was fairly cool ambient temp.
Either you have a twin brother or I just saw you at a speed shop in St. Louis yesterday.
Last edited by Steve Haefner; 01-05-2016 at 09:26 AM.
11-23-2015, 11:32 AM
Z06 dyno, lower than expected
