Caldina GTT Dyno - Comment

[Lac]

Hey,
Just did a big service on the Caldina and got them to Dyno and tune it for the second time, What do you think? Feels like its hammering on hi boost now.
Mods -
3inch exhaust after dump
K&N panel filter
Turbosmart Blow off
Greddy Profec B

Any comments on the graph?? Power is not huge but feels quick

[MR2BOY23]

seems very low eh

Don't they make like 180kw stock standard?

[Lac]

Its at the wheels...it would be over 200kws at the fly or very near.

[sergei]

seems very low eh

Don't they make like 180kw stock standard?

180kW at the flywheel on 100 Octane brand new.
130kW is lowish, but that depends on dyno.
You should expect 140-150kW at the wheels (but then again depends on dyno).

[Quirky]

that seems low...
how much boost you running?

[fivebob]

Its at the wheels...it would be over 200kws at the fly or very near.

Err don't think so. 35% drivetrain loss is extremely unlikely. Maybe 170kw flywheel HP, but flywheel HP is at best only going to be a guesstimate. Horsepower at the wheels is what counts and that seems a bit low for a GTT, I would've expected around 150-170kw ATW with those mods.

[Lac]

Yer, Thats why ive posted this, I was expecting more.
It does feel quick,and i can hear the turbo whizzing around, running 16psi tuned correctly, maybe the overall Kw figure is wrong...? Or its that dyno.

[Heylin]

my mr2 was running 175kw at 16psi on a stuffed fuel pump. that seems pretty low. Even on factory computer running rich you should still be getting 150 at least.

[QikStarlie]

hmm but its only running about 9psi at max power tho,

fix the horrible boost spike?

[Caldina3SGTE]

mines got a tdo5 turbo and on 17 psi i got 191kw atw on a rolling road thats factory fueling computer etc, few of my mates got around the 150 160 mark with stardard turbo running about 17-18psi

[escortman]

yeh sort of the boost spike 1st

[Dell'Orto]

You're in Aussie yeah? Their dynos always seem to read low compared to ones here. Did they give you a AFR plot too?

[strx7]

my mr2 was running 175kw at 16psi on a stuffed fuel pump. that seems pretty low. Even on factory computer running rich you should still be getting 150 at least.

Put the same in into a 4wd and do a dyno run and it'd probably only make 140.

Dyno Dynamics 4wd dyno's are pretty much the lowest reading dyno's around. Cracks me up when people says "its power at the wheels which counts" power at the wheels according to which type of dyno???????????
the same car on back to back runs between a Dyno Dynamics and a Dyno Max or Dyno Jet will "mysteriously" loose power on the Dynamics.

[fivebob]

Cracks me up when people says "its power at the wheels which counts" power at the wheels according to which type of dyno???????????

According to an accurate dyno

Regardless of the differences between dynos at least any ATW figure is a more accurate reflection of the HP available than some of the fanciful corrections people apply to get flywheel figures. Same applies to correction factors between dynos. In reality you can only compare runs from the same dyno under the same conditions.

In the end it's not the actual number that counts when you're tuning, it's the difference between runs on the same dyno, preferably under the same conditions, that tells you if you're going in the right direction.

I think you will find that when most people say "it's power at the wheels that counts" they are referring to the fanciful figures tuning shops quote for power at the flywheel, as opposed to the actual, albeit inconsistent between dynos, reading.

[matt dunn]

My car made 40 HP atw, so with 1000% drivetrain loss it makes
Hmm, would that be 4000HP at the flywheel or 40,000hp at the flywheel?

A flywheel figure is a guess at best, unless you run the engine on an engine dyno,

and at the wheels is all that matters, beacuse a car that has a bit more power, but a lot more drivetrain loss will not be as quick.

[fivebob]

My car made 40 HP atw, so with 1000% drivetrain loss it makes
Hmm, would that be 4000HP at the flywheel or 40,000hp at the flywheel?

You would have infinite power

As you can't lose more power than you make, the only way to get those drivetrain losses is to have it measured in a different universe where the laws of physics allow this

[Rych]

My car made 40 HP atw, so with 1000% drivetrain loss it makes
Hmm, would that be 4000HP at the flywheel or 40,000hp at the flywheel?

You would have infinite power

As you can't lose more power than you make, the only way to get those drivetrain losses is to have it measured in a different universe where the laws of physics allow this

Infinite power would be pretty insane, like Star Trek styles..

[BZR4AGE]

Are dyno dynamics hub dyno or roller dyno...it seems a bit low if its a hub dyno.

[strx7]

Are dyno dynamics hub dyno or roller dyno...it seems a bit low if its a hub dyno.

Dyno Dynamics are roller dyno, the kiwi dynos "dynopac?" are the hub dynos.

in aussie the guy who died in his Giacatollo at Eastern Creek did back to back runs on 3 different dynos. The engine was also engine dyno'd before it was put in the car.
The dyno dynamics read 27% less HP than engine dyno
the dyno Jet (common US dyno) read 15% less than engine dyno
and the NZ Hub dyno Dynopac read 7% less than engine dyno.

As others have said, running on the same dyno with the same correction factors is only way you can truely compare gains or 1 car vs another

[Rych]

I didn't realize how inaccurate dyno's are. So you mean to say you can't just go take your car to get dyno'd and see how much power it's making because most likely it could be way out and won't mean anything?

Surely there are accurate ones around???