T24A-FTS Throttle Body and Throttle Body Elbow Measurements

These trucks are all less than three years old, potentially still under warranty, and our society is becoming ever more risk-averse. I think people's appetite for these sort of mods will increase over time as these trucks become less "new."

 

Do you have any dyno numbers?

When (if) the XRunner comes out, I think the intake, exhaust, FMIC, intercooler pipes, etc... will be popular. This engine hits peak efficiency around 2k (peak torque = peak efficiency and Toyota claims 317 @ 1.8k RPMs IIRX) and the torque curve diminishes noticeably between 3k and 4k RPMs, dropping by 50+ ftlbs by 6k RPMs.

This is most likely due to an intake and manifold designed for low end power. If you can level out that torque (by opening up the intakes for more flow) curve through the mid to higher end RPMs, street truck guys might be more interested.

However, this engine has an offset crank shaft by (IIRC) 15*. While this helps with torque and engine wear, it also makes the engine more unbalanced. You're not going to easily get huge RPMs out of this engine IMHO so focusing on where you generate torque in your RPM range to maximize overall "area under the curve" would be ideal. Going for a high end power with better flowing intake might not be a great approach for this engine.

IMHO...

 

What's been modified in the truck that produced these results? Is it just the elbow? Or a tune also?

 

Just the tune. The elbow upgrade is in production, we won’t be able to test it until once a unit is in hand.

However, we have instrumented the truck and isolated a significant portion of the intake tracts pressure drop to the elbow. The data tells the story, not theory or speculation.

 

If that elbow gives 30+ HP/TQ across the RPM range, I'll take one...

 

Although I ordered one, I will not install it until you give me a clean bill of health that it is okay.

 

Did you guys see SXTH element FMIC dyno results are out. 15 hp gain.

I wonder how much more that could be if this elbow is incorporated in the mods.

I also wonder if the charge pipes will make a difference also?

Too bad there isn't someone doing a dyno test / results that include all the combinations of these parts.

 

People typically need to see some cold hard parts and results on the elbow alone before making that jump, or even considering. I understand that the data shows it could be a net positive. But data and real life occourances are sometime different than intended.
I feel its real affects will be combining it with parts like the fmic, tubes, downpipe and tune when increasing boost well past stage 1 levels. But ive been out of the turbo R&D world for almost 15 years now and a lot has changed in terms of data, sensors, latency and the sort.