DDMotorsports Shop 370Z Baseline Dyno - UGLY Torque Curve
 

Took the shop 370Z down to get a baseline dyno while it is still stock. Numbers are 285.46whp and 243.40wtq (ignore the max torque number on the chart as it is inflated due to spikes).

Anyways, I was just as shocked as you probably are to see such an ugly and scary torque curve. This car is 100% stock and I am hoping that its just a bad batch of gas. Discuss.

http://www.doubledownmotorsports.com...edynochart.jpg

http://www.doubledownmotorsports.com...selinedyno.jpg

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Yikes!!! Tune tune tune!!!!

That doesn't seem right. How is the HP curve so smooth if the Tq curve is so jagged? Considering HP is just a calculation of Tq?

Thats what boggles me too. Think its a software glitch?

^^^ Yes.

They had a 750whp Mustang on the dyno right before me and it was reading just fine. Go figure...

Something is not right, I've never seen one like that.:icon14:


435 torque, yeaaaaa!

ya I say sensor glitch in your dyno. The curve looks right if you through out the spikes.

I also don't see how the HP could be so steady while the torque jumped all over the place like that.

On a dynojet from another thread..


http://www.z1motorsports.com/imageGa...line.sized.jpg

Numbers are close if you leave ou the spikes on yours.

Tooooooo ugly to be right

I'm gonna go ahead and say something's not right with that curve......

re dyno?

Nice numbers :tup:. But as many suggested, redyno it. Run a full tank of 93 premium and then dyno may be? BTW, your 370Z is the best looking out of all (injected and GTM). I am a biggest Silver fanboi. Silver > ALL > White > Yellow.

When can we expect a video? :excited:

Nothing is wrong with the car. What needs fixing is the dyno (most likely a software issue)

Through some VP16 in that bad boy!! :tup:

Agreed Skaterbasist, the dyno itself looks to been erroring. I would have expected several pulls to be overlaid to show tolerance instead of one magic pull [or in this case, poor data pull]. If we ignore the spikes in the data, the torque curve looks fantastic; ruler flat and very good numbers in regard to rated engine output.


--->DDM; do you have the rest of the pulls that you did? Also, if that's not your dyno, they owe you clean error-free pulls! Also, did you do any datalogging to observe engine operation beyond roller numbers? Ignition timing, MAF, AFR, EGT, IAT, ECT, etc.?

AK370Z - Thanks! I took video, but it didn't come out. Something is screwed up with the sound. I will use a different camera for the re-dyno.

Ryephile - Sorry, just did a quick baseline dyno. Nothing fancy. The only other pull we did the guy did in 4th gear instead of 5th so we scrapped it.

They are going to try and get me back on the dyno today.

:ughdance::tup:

oh...jeez..the Z's have a bad case of indigestion.....

that's just weird...lol

The G37's wasnt like that

Aren't torque spikes like that about impossible?

Well, they never called me back yesterday to tell me to come down and re-do the dyno. I guess we will have to wait until Monday.

Going back to their dyno tomorrow at 2pm PST for a re-do. If the result is still the same, the only other DynoJet in town can get me in on Saturday morning.

Re-did the dyno today at the same shop. Much better, but a tad lower numbers...

http://www.doubledownmotorsports.com...elinedyno2.jpg

Yeah has to be computer related.

edit nvm saw it has more pages than i thought

that looks much better... ^

First post updated with video. My apologies for the terrible sound and lighting. I am new to this whole video thing. :)

It's just the RPM pickup.

Here's an MR2 doing something very odd (or amazing) with a bad coil signal. Yes, that's about 1500 ft/lbs of torque. Obvioulsy an error.

These are hardware issues with not getting a clean signal, not something inside the Winpep software.

http://www.mrtwo.net/mr2modproject/i...car/torque.jpg

LOL! 1500Lbs of torque in an MR2!!! If that were true, that car would do donuts like an AWD car!

mmm nothing like STI "axis spins" lol

Goddam spam.

^^ Reported.

Those prices are pretty good!

Yeah but he loses points for inconsistency. Is it $1.55 a pill or $1.61? How much is the shipping?