Why does my car hate the Dyno!?? HELP!
 

My car is a 2013 FR-S 10 Series. It has the usual bolt-on parts. I have a long tube, equal length header, Tomei over pipe and Titanium front pipe, Custom Titanium mid-pipe and Titanium exhaust. The clutch is an Exedy stage 1 clutch kit with a light weight flywheel. I also put a new air intake on as well. Ultimately, nothing out of the ordinary.

Before my FR-S, I had been fixing up project cars for a while. Mostly Nissans. Through my endeavors, I became friends with Martin Struk, the owner of RS-Enthalpy, who has been tuning and building racecars for years. So his ability is not in question here.

He wanted to start offering dyno tunes for our chassis around Tampa, so I offered my car for his research. He was able to achieve great results that I have been very happy with. However, when my car is on the dyno, it seems to develop the automotive equivalent of Down Syndrome. LOL. It takes forever to get a consistent result. By the time that we are able to get a good run, the car is as heat soaked as two squirrels fucking in a wool sock, in a burning barn. LOL.

We have tried everything...twice. Disconnect the battery and then reconnect the battery. Reflash it...again. Unplug the ABS pump...Plug the ABS pump back in. Turn the Trac and VSC off. Put it in VSC sport mode. What am I missing?? LOL.

I don't think that the power of my car is changing that drastically on a daily basis, but that it just goes haywire on the dyno.

The dyno we are using is a Dynojet with a 5,000 lb roller. But this Dyno is known as the heartbreaker around town. It is the lowest reading dyno around Tampa. I don't know if that is relevant or not.

Please excuse me for my ignorance if this happens to be an easy fix.

Any and all help will be appreciated. Also, if anyone else has had this problem, or have heard of this, please let me know.

bad gas maybe? do you have enough airflow on the dyno? does your tuner datalog the runs? I don't really know, but I'm just throwing out ideas lol

log the engine parameters

look at

afr
knock correction
flkc
IAM

Happened to a tuner here not familar with subaru ecu he left iam initial set to 0.7.

tuned it and then it knocked like crazy after a while as iam tried to creep back to 1

maybe its the dyno not the car
a dyno jet being a heart breaker has me lmao!!!! Mustang is a true heart breaker.....

So - simple test to see if it is the dyno itself...

Try your car on another dyno. If everything else is equal you'll have found the problem without spending too much effort and time on it.

If not.. well I don't know :)

It's not the dyno, it's the tooner.

Tooner!!!



I read that and spit my Ice Tea all over my lap top...That's awesome!!!

wait are you saying you tried to dyno the car with the traction control on? Have you done the pedal dance?

Pedal dance!

:popcorn:

You don't need the pedal dance for a dyno session. Just turn traction control off by long pressing the button.

Quoted for potential signature use.

FYI if you are dyno-ing at Fever (which I assume you are), it's actually super high reading. An SR20 with an S15 T28 put out "420WHP" on that dyno. And a VVL SR20 with a Z32 MAF put out over 900 or something ridiculous. Don't trust any number that thing puts out for anything other than tuning purposes.

Omg I'm dying. Post of the day hands down. You sir, are a funny b@stard! Permission to quote in signature?

Does that mean you beat me to it? This is so signature worthy it's ridiculous!

As to the actual subject matter, I also notion testing another dyno... GL!