tooter's manifold adventure...

[etherdude]

Tooter, please remind us. How do your fully modded figures compare with "bone stock"?

Thanks, Doug

[tooter]

Originally Posted by etherdude

Tooter, please remind us. How do your fully modded figures compare with "bone stock"?

Thanks, Doug

Here's bone stock dyno runs from the dyno chart sticky thread:



The results.

Stock:

91hp

91tq

Tooter:

111hp

105tq

So with:

Intake
Throttle body
Intake manifold
Header
Axle back exhaust

I have 22% more horsepower, and 15% more torque with the stock ECU, no tuning, and regular 87 octane pump gas. Latest gasoline fillup today: 39.4 mpg.

Total cost: $1,350

[tooter]

I'd also add that none of these modifications has altered the basic reliability economy or longevity of the engine. My wife's car is still just a regular daily driver that always needs to be in service.

Now it's just way more fun to drive...

[etherdude]

Tooter,

I would estimate you have optimized the volumetric efficiency of this particular air pump. A gain of 20 hp at the wheels is awesome. Without changes to cam timing, fuel map, and injectors (meaning access to the ECU), I cannot imagine there is anything left in a naturally aspirated Yaris. Think about it...your at the crank hp is pushing 125+.

[tooter]

Originally Posted by etherdude

Tooter,

I would estimate you have optimized the volumetric efficiency of this particular air pump. A gain of 20 hp at the wheels is awesome. Without changes to cam timing, fuel map, and injectors (meaning access to the ECU), I cannot imagine there is anything left in a naturally aspirated Yaris. Think about it...your at the crank hp is pushing 125+.

I know nothing about the electronics and so chose to leave them totally untouched while focusing solely on the physical aspects.

And the dyno runs tell only part of the story. In normal daily operation nothing was conceded to drivability or to getting excellent gas mileage. I believe this is because I didn't alter the factory electronic engine management and instead turned my attention to the issue of flow.

[JustDidIt]

Originally Posted by tooter

So with:

Intake
Throttle body
Intake manifold
Header
Axle back exhaust

I have 22% more horsepower, and 15% more torque with the stock ECU, no tuning, and regular 87 octane pump gas. Latest gasoline fillup today: 39.4 mpg.

Total cost: $1,350

That's impressive considering you haven't modified any electronics and let the stock ECU make any corrections.

Tooter, I really plan on coming up in the next 2 wks or so. I'd like to meet up and talk with you about my ideas for my 1NZ-FXE. It includes a few items like the ones below...

[tooter]

Originally Posted by JustDidIt

That's impressive considering you haven't modified any electronics and let the stock ECU make any corrections.

Tooter, I really plan on coming up in the next 2 wks or so. I'd like to meet up and talk with you about my ideas for my 1NZ-FXE. It includes a few items like the ones below...

Sounds like fun!

PM me in advance before you come so that I can set some time aside from work, and we can explore the possibilities. Oh oh, stainless. That's a lot harder to work with than aluminum. But it's still buildable material.

Greg