|04-20-2012, 04:20 PM||#1|
A Day with a ZL1 in the eyes of Torq!
Let me first thank our customer Alex for bringing his beautiful black, carbon ZL1 to the shop yesterday to help us test fit a prototype cold air intake for one of the big intake manufacturers. Alex really wanted to see what his car would lay down stock so we invited him back today to make a couple of pulls and to see if we could persuade him into a calibration session.....and we were successful in doing such
Everyone at the shop was impressed with the build quality and the styling of the veicle. The car is very well built and we were excited to have the opportunity to work on a customers ZL1 so fast.
Stock Calibration/Dyno Results/Thoughs
Air-Fuel was measured with our Lab Grade ECM AFM-1000 Wide Band/Lambda Meter. Datalogging was preformed with EFI Live
The stock calibration is VERY aggressive so I knew I was in for a battle with this beast trying to make any more power. Compared to the CTS-V's we have tested, the air-fuel was found it to be leaner and final total timing is advanced compared to the V's. I am sure if the car was ice cold we could have made 480-485 but that is not what we were trying to accomplish.
In stock trim the car made 476/485 with a lambda of .79 until 4500 and about .74 above 4500 to redline (11.55-10.88 AFR based on GM's cal) with reported spark knock during our datalogs in various rpm zones.
Intake Air Temperatures are CRAZY with this car. It was 85* in the shop today and we were getting reported IAT 2's at the end of the runs near 145 and the start of the run reported IAT 2's were approx. 117. This is a rise of roughly 28* F, which is crazy.
We have dyno'ed CTS-V's and Supercharged SS's with reported temperatures much lower and the rise far less so we know there are a ton of improvements to be made with the car....and don't worry we have a couple great products in the pipeline we are testing next week and are already in stock ready to ship!!
We verified both the factory MAF calibration and VE calibration and found both to be off slightly.....which is expected from a mass produced factory calibration
Torq Calibration Process
Like most, we made our standard changes such as turning off the CAGS (Skip Shift), changes to the fan settings and started our calibration process. We dialed in both the MAF and VE surfaces to dial in fueling and starting working on our spark calibration.
Like all of our calibrations, we spend a ton of timing improving the overall feel and performance outside of WOT. This is where most of us/customers spend time so why shouldn't we spend most of our time calibrating these conditions. Surprisingly we found many areas where we could make improvements outside of WOT to help increase the performance/feel of the car.
We already knew what improvements could be made based on our initial logs of the factory calibration so we flashed the car and made changes. As I expected, we picked up some great torque and hp down low and on the hit and continued making runs to dial in spark and fuel to our liking. We picked up some good HP/TQ throughout the run but nothing mind blowing...again, what we expected from this car.
Stock Results: 476rwhp/485rwtq
Tuned Results: 490rwhp/501rwtq
Highest gains are 34rwtq and 14rwhp. The big torque increase down low on the hit really wakes this car up. 14rwhp and 16rwtq peak gains. Took a ton of time and focus to pickup power. The around town gains, roll on throttle increases are really nice!
Stay tuned for our video!!!
The customer decided he wanted more power so we are installing the following:
10% OD Lower
Torq Hand Ported Snout
Aftermarket Airbox (pics and brand to be disclosed shortly)
Some other really cool pieces we have designed for this car with the help of CAD data provided through the SEMA Tech Transfer program
Last edited by Meister@Torq; 04-20-2012 at 06:30 PM.
|04-20-2012, 06:11 PM||#5|
Join Date: Oct 2006
Location: Crapramento, Crapifornia
Cool!!! It's nice to see some IAT data from a stock car!!!
Thanks and I'm looking forward to more results
05 Hummer H2 SUV on OEM Air Ride
Forged 11.1:1 408 LQ4 (K1 crank & rods; Mahle pistons)/CPP LS3 CNC heads/BTR Stage IV LS3 cam and valvetrain/home ported L92 intake manifold/ported 90mm TB/custom Volant CAI/mid-length headers/AFE dual 3" CB/Corvette Servo/el cheapo lift/Cognito UCAs/e'fan conversion/aluminum radiator/Moroso catchcan/HPTuners by me/LED exterior lighting/Pioneer AVH-5600BHS/Pioneer GM-9601/2-Pioneer TS-W310D4/Obcon Labyrinth dual-12 box/lots of other stuff
|04-20-2012, 06:28 PM||#8|
Video is up!
I CANNOT WAIT TO GET MY CAR (sorry for the rant, just had to say it one more time lol) but thanks to our good friend Alex for letting me take it for test drive!
|04-20-2012, 06:30 PM||#9|
Owning SSes for 50 Years
Drives: Garnet red 2016 Camaro 2SS
Join Date: Apr 2010
Location: Paris, TN
The improvement is about what a bolt on CAI might make...so, I say that's impressive! I'm sure there's more to come.
2016 Camaro 2SS, Garnet Red Metalic, 8A, NPP, Nav, Sun Roof, upgraded silver wheels, lit door sills, Ash gray interior.
Previous Performance Cars:
1966 Chevelle SS 4M 2010 Corvette 6M
1968 Dodge Charger R/T Auto 2012 1SS 6M
1982 Corvette Auto 2010 1SS 6A
1984 Corvette Auto 2016 2SS 8A
1999 Camaro Auto
2002 C5 Corvette 6M
2006 Corvette Auto
|04-20-2012, 06:41 PM||#10|
Drives: 2012 ZL1
Join Date: Feb 2009
So 490 is almost 580 less 15%. Is that about normal? Was it Auto or Stick? I have seen a few reports of over 500 RWHP in stock trim.
Sincere Thanks to City Chevrolet, Charlotte, NC http://www.citychevrolet.com/blog/ca...et-camaro-zl1/
|04-20-2012, 07:03 PM||#11|
Drives: '09 Honda Civic LX
Join Date: Jun 2009
Saving up for a camaro.
Dream camaro is either a 1/2SS with RS, black with red stripes, or red with white stripes.
No rice with my order.
|04-20-2012, 07:22 PM||#12|
Drives: 2010 IBM 2SS/RS Auto
Join Date: Apr 2010
Location: Laval, Canada
This guys (see link below) Stick car dynoed at 512rwhp, why such a big difference.
Jannetty Racing 550 RWHP Street Brawler Package,
Powered by TVS2300 Maggie
build and tuned by
|04-20-2012, 07:58 PM||#13|
Drives: '12 ZL1,67 Cam,68 Biscayne 427 4 sp
Join Date: Aug 2011
Location: B.C. Canada
hmm weird how some people over 500 with no mods?
2.55 upper, 10" lower pullies, Innovators west billet hub and sfi balancer, solid blower drive isolator, 50 mm idler kit, full length S/S headers no cats, comp cams custom grind cam, comp roller rocker trunion kit, comp push rods,dual valve springs retainers and locks, Injector dynamics ID850 inectors, Rotofab ZL1 cold air kit, Lingenfelter 160 thermostat, Rotofab intercooler reservoir, stock plugs, LS7 90mm throttle body, GTO clutch reservoir mod, my own custom catch can, Tuning by Jannetty, install by me.
|04-20-2012, 08:24 PM||#14|
Drives: 2013 WRX Sedan
Join Date: Aug 2009
Location: Austin, TX