Miata Turbo Forum - Boost cars, acquire cats. - Tune Worked on Dyno but Not on the Street

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Tune Worked on Dyno but Not on the Street

Sounds like the tuner didnt tune in the load cells that are used while driving the car.

A dyno is great in that it lets a tuner dial in all the different load points without having to find long roads, steep roads, etc.
BUT, it relies on the tuner actually doing that, and then taking it out on the road and driving it to double check it works in the real world.

Quote:

Originally Posted by hks_kansei (Post 1549513)

I suppose.

I have a difficult time believing that a 1.6 made 160 hp with just compression and cams

Same. That torque number is b-a-n-a-n-a-s.

That said, it's in "Shoot Out" mode, which is specifically to inflate egos and match Dynojets.

FWHP, and that would immediately call into question the tuner chops AFAIAC.

I have been doing my own tuning using various platforms, including MS for 7 years. I have yet to see a "tuner" create a viable street tune on a dyno. It takes me literally 100s of hours to tune the drivability elements (street) to my liking. IOW, expecting a car to run well over all conditions after a few hours on a dyno is unrealistic.

If you do not feel inclined to tune the drivability by yourself (which I find to be a very satisfying activity), I suggest you engauge one of the e-tune service suppliers to help you. I know Vlad (18psi) used to do a fair amount of this, not sure if he does that anymore.

Good luck

100 ft tq @ 2800 rpm. this is some buuuuuulllshit.

Quote:

Originally Posted by Ted75zcar (Post 1549542)

Thank you sir, I sure do :)
Crazy busy too.

I would also agree with the statement made earlier about dyno only really being useful for WOT/spark tuning, otherwise a street/road tune is a lot more effective to dial in a car's driveability and useability.
I usually do both when possible, and prefer street over dyno for most cars. Dialing in proper startup/idle/driveability is 100 times more time consuming and important than WOT. Wot takes like 15-20 minutes to tune. The rest takes hours/days/weeks sometimes.

Lol @ everyone getting bent out of shape about the dyno.

Notice is says ShootOut mode... and the Y axis labels in "flywheel" numbers. Could likely knock at least 30HP off the whole curve and it would be in the ballpark.

Quote:

Originally Posted by Arca_ex (Post 1549608)

Wait... OP deletes first post after hearing things he doesn't like then posts some justification email from the shady tuner? Yet another MT flame out coming up.

Go back to Facebook where you belong.

Quote:

Originally Posted by CodeRed7o7 (Post 1549626)

The email I received with the graph stated:

"Our dyno is a loaded dyno so the horsepower numbers it gives out are a lot lower then an unloaded dyno, example Dyno Jet. The power number will vary from dyno to dyno and our dyno is one of the lowest reading dyno’s on the market. We give you both the power number your car makes on our dyno along with the Shootout Power graph. The Shootout Graph, even though it says flywheel, gives you Power numbers at the wheels that are within 3% of what you would make on a unloaded dyno. Most customers will use the Shootout power when telling others what their car makes for Horsepower."

Yikes.