6Speeder

We dyno'd my buddy's 2010 ZR1 yesterday, with 700 miles on the odometer. I've dyno'd LOTS of Vettes, but this was different than earlier ones. First getting the traction control off via the button and the 5 position ****. Then on the first run I stabbed it too fast to WOT and torque management kicked in, taking out lots of midrange torque. That run gave 560 SAE RWHP but only 485 SAE RWTQ.

A big difference from earlier Vettes is that you can't just hit reset to remove the DIC warnings of Service Active Handling, Service ABS, etc. They throw codes and put the car into limp mode after the first dyno run. I had to use a code reader to remove them before I could get the car into race mode for the second run.

Finally got the car ready to dyno again, ROLLED into the throttle, and final results:

568 SAE RWHP and 520 SAE RWTQ

I had heard the 2010's were dynoing higher than the 2009 ZR1's, what do you think?

BTW: We've dyno'd 5 stock Z06's on this same Dynojet and all put out 440 to 450 SAE RWHP, so this isn't a particularly generous dyno.

Kyle Lemish

Its so hard to compare numbers from dyno to dyno as you know but that one seems to have a bigger gap between rwhp and rwtq than most other zr1 dyno sheets that I have seen.....could you post the graph may still be getting into tq mgt.....and what codes did you pull?

treynor

Interesting, I've got a '10 with 2300 miles on it now. Sounds like there's a need for a confirming dyno run

Were you using 91 or 93 or ? octane gas for the pulls?

zeshawn

no way it would do that much on 91.

but 560 sounds a little higher than what ive personally seen. Never dynoed mine however.

6Speeder

Albuquerque is at 5,000+ altitude, 91 is the highest octane pump gas available.

About the codes... unknown. The diablosport Predator said "no codes found", but cleared whatever was set anyway.

treynor

> Albuquerque is at 5,000+ altitude, 91 is the highest octane pump gas available

Ah - but then the dyno figures would be corrected not actual. I'm curious whether the ZR1 needs 93 octane (or higher) at sea level to make max power?

6Speeder

Of course the numbers are corrected, our dyno correction factor for SAE at the time was 1.19. That's pretty good air for ABQ, NM. I've seen it as high as 1.25 when racing.

SAE is the best, commonly used standard. People who use uncorrected are usually in below sea level conditions for bragging rights.

I'm sure that at sea level 93 octane will produce better results than 91.

crossfire7

That is some big power

treynor

Right! To be clear, I wasn't critiquing the use of corrected numbers, which is entirely appropriate. I was observing that with low D/A you don't need higher octane fuel to make max power, because it's the equivalent of running lower boost.

Sadly, here in CA we don't get anything beyond 91 octane, even at sea level.

1985 Corvette

Interesting results considering that edmunds review said they "only" got 505 hp to the wheels off their ZR1 they tested.

redknight

I think that was a mustang dyno and I believe that they also implied the vette made more power than the dyno indicated.