[avxkim]

This guy replace a stock intake tube with aftermarket intake pipe: Переделка впуска — Chevrolet Malibu, 1.5 л., 2016 года на DRIVE2
Any thoughts? Would it actually improve performance?

 

[repairman54]

No but it will make your wallet lighter. Messing with the 1.5 will shorten its life no matter what someone who makes parts claims.
Need a Malibu with more power, trade it in for a 2.0 car.

 

[avxkim]

No but it will make your wallet lighter. Messing with the 1.5 will shorten its life no matter what someone who makes parts claims.
Need a Malibu with more power, trade it in for a 2.0 car.

Well, is 2.0 a good candidate for such "tuning" ?

 

[DrivenDaily]

Well, is 2.0 a good candidate for such "tuning" ?

Ask Trifecta and also some of our CMF members who have it. I don't because mine's a 2011, but I'd buy one in a heartbeat if I had a Malibu that they make a tune for.

 

[cp-the-nerd]

From a functionality standpoint, that modification makes NO sense and does not improve performance.

The intake tubing is already routed to cold airflow from the upper grille slot. All that genius did was eliminate a plastic chamber that I assume is a water drain and/or acoustic resonator and lower his intake location by 6 inches, which means if you're forced to drive through high water, you're getting hydrolocked that much sooner.

Also, a lot of engineering goes into the intake tubing to smooth out the airflow. Cheap flexible "accordion" tube creates air turbulence all the way through it and has a ton of extra surface area that will radiate more heat into the intake air.

 

[avxkim]

From a functionality standpoint, that modification makes NO sense and does not improve performance.

The intake tubing is already routed to cold airflow from the upper grille slot. All that genius did was eliminate a plastic chamber that I assume is a water drain and/or acoustic resonator and lower his intake location by 6 inches, which means if you're forced to drive through high water, you're getting hydrolocked that much sooner.

Also, a lot of engineering goes into the intake tubing to smooth out the airflow. Cheap flexible "accordion" tube creates air turbulence all the way through it and has a ton of extra surface area that will radiate more heat into the intake air.

I see, so increased diameter of this flexible tube not giving any performance gains? I also had doubts about lowering the intake tube.

 

[cp-the-nerd]

I see, so increased diameter of this flexible tube not giving any performance gains? I also had doubts about lowering the intake tube.

No. The increase in diameter from intake to airbox with the additional air turbulence and heat is completely negligible to any horsepower gains. In fact, after looking at the factory intake versus the modified one, the factory intake almost has a ram-air effect with upper grille's the air induction paneling. The modified intake has zero ram-air effect because it's in front of the radiator.

Anyway, if you wanted diameter to make a difference, you need a more in depth intake modification back to the throttle body (and smooth tube design).

 

[DrivenDaily]

I had to laugh at the dryer vent hose idea. I've seen some pretty bad stuff, but this one at or near the top.

 

[repairman54]

No matter how big the inlet tube is the throttle body is the limiting factor of how much air will flow into the engine.
Turning up the boost is the other option but that will break pistons in the 1.5. That's why GM locked the ECU in later models to prevent people from blowing up motors.
1.5 is pretty much maxed out now safety wise. It was designed to be family transportation not a performance vehicle.