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I am not certain, but I believe that camshaft timing is also adjusted on this engine, like a VTEC/VANOS.. almost every automotive manufacturer utilizes this on current engine platforms. Combined with direct injection fuel timing, this in itself, creates more power and efficiency. I don’t even...

The center housing rotating assembly/CHRA has one intake impeller, and an exhaust impeller design that has two exhaust impellers that are the same CHRA center shaft. Each exhaust impeller set is to capture exhaust gas from the exhaust manifold by utilizing thermal, kinetic, and exhaust impulse...

This turbo design might be why the tuner dynos are showing a drop off of power as the engine rpm is in its higher range, when trying to extract more power. To me, it means that Toyota researched this design thoroughly, and gains can be made, but hard to achieve anything at the higher end of the...

On the exhaust port of the twin scroll turbocharger, it will have a split to isolate exhaust from the exhaust manifold, to port exhaust gas to one of two sets of exhaust impellers on the center housing rotating assembly/impellers. The second set of exhaust impellers and the porting of the...

If you have the electrical options in the bed of the truck, then you might be able to utilize that as well. Also, you gen3 taco setup would work as well. I have been considering a couple of lithium group 31 batteries in the bed as well. But I have to find a roof replacement first, ugh!

You are welcome!! They are expensive to replace when they fail, and they have more complexity due to their unique design

This article does a far far better job of explaining it. https://www.roadandtrack.com/car-culture/a45050542/how-twin-scroll-turbo-work-lost-scrolls-of-turbocharging/

A turbo is basically an air pump, and based upon displacement of the engine, compression ratio of the engine, and air volume at maximum RPM are necessary to find the right turbo. But having a smaller turbo will provide better lower rpm performance, at the expense of degrading higher rpm...

I am more concerned about getting the turbo impeller speed reduced as much as possible. I am uncertain if the twin scroll turbocharger has a ball bearing setup or not. Regarding cooling…. Before folks have a nasty disagreement on this thread, please read this article by Garret, and how coolant...

I believe this is the “heat exchanger thingy” but this one is for the engine oil- spin on oil filter is likely engine oil filter. https://parts.smithtowntoyota.com/v-2024-toyota-tacoma--trd-off-road--2-4l-l4-gas/cooling-system--engine-oil-cooler and for the transmission oil cooler, I think it...

I believe some some variants of this engine use a liquid intercooler, but on this truck-the intercooler is air to air- like a radiator with no liquid in it. The turbo may have a coolant line, but I have not looked underneath the passenger side of the engine to confirm this. The turbo will...

This diagram is accurate for a liquid cooled intercooler. Are you stating that the Tacoma utilizes a liquid cooled intercooler?

Any reduction of “resistance” is going to improve efficiency. The biggest gain from a high flow air filter, integrally mounted within an air box to best maximize efficiency is going to improve performance of the induction, but the most gain is when the engine is being flogged, under highest...

The YouTube video from stillen explains the restriction and how it impacts performance. I am curious how much this box increases noise. I know on naturally aspirated engines, it makes a lot more noise exiting from the throttle body. On my 87 Grand National, When changing the air filter set up, I...

Ahhh! True! A mass air flow sensor is restrictive and for stock engines, a very efficient way to measure air flow. For a performance engine-a speed density setup, when done properly- will create more power… but the risk is it isn’t as accurate/precise as a mass air flow setup. for...

I apologize if I wasn’t clear in my writing. The mass air flow sensor doesn’t measure measure air pressure drop, but the cooling effect air passing through the MAF/electrical resistance which is sent to the Denso Gen 4 ECU along with ambient air temp values to the same ECU, in conjunction with a...

Yes, one could throw the OE air cleaner assembly back on, but if Toyota HQ Looks at any data log pertaining to ambient air charge temp vs mass air flow data, they could find that something wasn’t kosher, but that’s really going out on a limb with an accusation. Their only anecdotal proof would...

My guess is the OEM air cleaner assembly is designed as a compromise- one that tries to offer enough air volume and also dampen turbo noise?

I used to own an 87 Buick Grand National, I bought it with 2751 miles on it. I drag raced it at sears point a lot. I can tell you that cooler ambient air temperature would make a lot more horsepower, even though the vehicle had an intercooler. The MPH difference would increase by 3 mph at the...

Likely moisture/condensation in your exhaust pipes