Yaris Intake Manifold

[richardholdener]

Please feel free to ask questions about the intake rather than resort to speculation. The intake offers the gains described by the dyno chart with no CEL and no changes to ECU. There are no programming changes necessary for the intake upgrade. The reason for this is the Yaris motor features a mass air meter which compensates for the additional airflow produced by the resonance tuning. The mass ai rmeter will address the extra airflow and offer the necessary extra fuel flow. The intake upgrade produced the same air/fuel curve as the stock manifold. These gains are not dependant on the CAI, but the combination of the CAI and intake will offer slightly more power than the intake and stock air box.

Originally Posted by cleong

I'm just a bit doubtful if the stock ECU will be able to handle the better induction without throwing a code. It seems to have quite tight operating parameters which it considers "normal".

Will an aftermarket air filter be necessary, or can you just bolt the stock airbox back in?

Lots of questions but that's because I'm interested in the product. 10whp is too good a gain to turn down if it is plug and play.

[cleong]

Originally Posted by richardholdener

Please feel free to ask questions about the intake rather than resort to speculation. The intake offers the gains described by the dyno chart with no CEL and no changes to ECU. There are no programming changes necessary for the intake upgrade. The reason for this is the Yaris motor features a mass air meter which compensates for the additional airflow produced by the resonance tuning. The mass ai rmeter will address the extra airflow and offer the necessary extra fuel flow. The intake upgrade produced the same air/fuel curve as the stock manifold. These gains are not dependant on the CAI, but the combination of the CAI and intake will offer slightly more power than the intake and stock air box.

Thank you. You told me exactly what I wanted to know. As you can see, I'm rather far away, so when the user dyno charts start flooding in confirming the performance increase, I'm buying one.

As you mention that it is a CNC-ed part, do you have problems with heatsoak from having it bolted to the engine, and then the manifold heating up the intake air temperature though? One of my mates tried a custom built stainless steel manifold on his engine, but abandoned the idea as intake temps jumped from an ambient of 100-110 degrees to 160 degrees, which ended up costing the engine power instead.

[kou]

^^^you need aluminium not stainless steel for an intake.^^^^