Performance worsen after installing aftermarket air filter

[DerrickEe]

Hi guys, yesterday I changed my heavily restricted OEM air filter on my Perodua Viva to an aftermarket drop in stainless steel air filter. Cap ayam brand for RM68. Well I was thinking,since its only an extra of rm20-30 from a brand new original air filter,might as well I give it a try.

The acceleration of the car from stationary position has definitely improved. But that 'feel' somehow decreases over time as it reaches 80km/h. I had a hard time accelerating after 90km/h, a really hard time. Only managed to accelerate up to120km/h and the meter just stops there at 120km/h despite flooring my pedal. Used to be able to run up to 140km/h without any hassle with stock air filter.

Clearly,the solution here is to change the aftermarket air filter to a more reputable one. But can someone explain to me what is the problem with this specific aftermarket air filter?

Thank you in advance.

 

[neohadri]

U sure its not because of u driving uphill?
maybe u should try maintain in high rpm during your next try and btw your tb will be more prone to be cover by dust after sometime since filteration almost non exist

 

[Tomiya Takato]

POD Filters Mythbusted - YouTube

 

[DerrickEe]

U sure its not because of u driving uphill?
maybe u should try maintain in high rpm during your next try and btw your tb will be more prone to be cover by dust after sometime since filteration almost non exist

It was only a slight uphill when I attempted to reach top speed for the car. Alright,maybe I should do another test run and see how it goes. Felt so cheated at first when it didnt give the performance I wanted

---------- Post added at 11:25 AM ---------- 6 hour anti-bump limit - Previous post was at 11:09 AM ----------

POD Filters Mythbusted - YouTube

I watched every single episode from MCM already bro As for this episode,well it could be true that my car lost power or gained power, but anyhow I still have to change my clogged factory air filter. So it will be a bonus if I gained power,and unlucky if I lost power. Try luck :S

 

[Izso]

I watched every single episode from MCM already bro As for this episode,well it could be true that my car lost power or gained power, but anyhow I still have to change my clogged factory air filter. So it will be a bonus if I gained power,and unlucky if I lost power. Try luck :S

If I'm not mistaken, the Viva ECU isn't adaptive and runs based on a fixed fuel map right? If yes introducing more air would just make it run really lean. I don't think you should use the stainless steel mesh filter as those are very free flowing. At the very least consider getting a performance non-stainless steel drop-in like those from K&N/Simota/Works/Pipercross.

But you gotta love that induction noise!

 

[DanzEterna]

u buy cap ayam open pod u get ayam results, u should have invested more & get a K&N drop in or open pod ones.

 

[twistedichc]

It was only a slight uphill when I attempted to reach top speed for the car. Alright,maybe I should do another test run and see how it goes. Felt so cheated at first when it didnt give the performance I wanted

---------- Post added at 11:25 AM ---------- 6 hour anti-bump limit - Previous post was at 11:09 AM ----------



I watched every single episode from MCM already bro As for this episode,well it could be true that my car lost power or gained power, but anyhow I still have to change my clogged factory air filter. So it will be a bonus if I gained power,and unlucky if I lost power. Try luck :S

i would lurve 2 hear u'r result

 

[papagoines]

even if you see speedworks performance kit review, if using the injection kit + pod alone will show that it lessen the torque somewhat...

other than that, the other logical explanation is that the engine is sucking too much hot air...

 

[red mini 8 7 8]

even if you see speedworks performance kit review, if using the injection kit + pod alone will show that it lessen the torque somewhat...

other than that, the other logical explanation is that the engine is sucking too much hot air...

I agree with this one. As the Viva has a small engine bay, heat is everwhere, easily sucked by the air filter. Try to place a CAI and direct it far from the extractors, radiators. Its a tough job for a small bay!

 

[ken yeang]

if cap ayam brand can do wonders, then K & N can close shop liow..............

 

[Izso]

if cap ayam brand can do wonders, then K & N can close shop liow..............

Not really. Those metal mesh filters does have its uses. Just a matter of whether the engine is up to par and is able to use it. Kinda like those race engines that don't have any filters, but those race engines are rebuilt after every race la.

 

[ronaldindin]

how effective is this kind of drop in filters? And the temperature of air does matter too? Sorry I'm new in this

 

[Maxx]

how effective is this kind of drop in filters? And the temperature of air does matter too? Sorry I'm new in this

if u done intake mod like port n polish, changed intake manifold, etc.. 'maybe' drop-in can give better result.
for std setup oem filter does the job well..

cold temperature can give more power/respond. ecu will detect temperature from intake sensor.
usually stock intake snorkel will get fresh air away from engine heat.

 

[Izso]

Ecu won't detect temperature from the intake la! It will detect how much O2 (oxygen) is available and adjust the fueling to compensate. Colder air is supposedly denser therefore richer in oxygen la. Hot air is the opposite.

But the difference is only noticable only if you're sucking in hot air all the time from the manifold or something.

 

[Maxx]

Ecu won't detect temperature from the intake la! It will detect how much O2 (oxygen) is available and adjust the fueling to compensate. Colder air is supposedly denser therefore richer in oxygen la. Hot air is the opposite.

But the difference is only noticable only if you're sucking in hot air all the time from the manifold or something.

then why got air intake temperature sensor at either airbox, intake manifold, tb?

 

[D7zul]

Ecu won't detect temperature from the intake la! It will detect how much O2 (oxygen) is available and adjust the fueling to compensate. Colder air is supposedly denser therefore richer in oxygen la. Hot air is the opposite.

But the difference is only noticable only if you're sucking in hot air all the time from the manifold or something.

then why got air intake temperature sensor at either airbox, intake manifold, tb?

some car models have this air temp sensor.. some car doesn't..

not sure about viva.. but for 20v, blacktop has it & silvertop doesn't..

 

[Izso]

then why got air intake temperature sensor at either airbox, intake manifold, tb?

not temp sensor la bro. It's a O2 sensor to measure the density of oxygen in the air flow. MAP or MAF sensor.

 

[papagoines]

not temp sensor la bro. It's a O2 sensor to measure the density of oxygen in the air flow. MAP or MAF sensor.

higher the temp, less dense the air

 

[Maxx]

not temp sensor la bro. It's a O2 sensor to measure the density of oxygen in the air flow. MAP or MAF sensor.

O2/lambda at exhaust, i know.
that O2/lambda sense O2 in exhaust fume after combustion process, n adjust ECU AFR accordingly. usually in cruising speed.

MAP/MAF sense air pressure/mass in intake part.
use by ECU for AFR in closed loop mode.

some engine does have air temp sensor. so there must be some data taken from the air temp sensor for ECU calculation.

 

[jeffayn]

Not all air filter is equal.. or else we do not need K&N to tell us how superior their filters are.
A good air filter is an art of balancing between filtration, performance and lifespan.

The oem or traditional air filter is make out of paper material.. is just like your coffee filter, but much porous like your house hold vacuum bag. So some oem "brand" macam macam use paper which is not filter quality, but much compact, look nicer , better built and cleaner.. but it fail as a air filter, and is more likely air blocker...and they last not so long...

your cap ayam performance air filter.. is built to look like , smell like, even feel like the K&N , but in deep , it just a paper filter in disguise of performance filter..

K&N filter is made from cotton, and is interweave layers and each fliter designed to it optimum numbers or peat, which affect the air flow volume, direction and speed entering... it take months to year to get one model to be perfect enough for K&N to put it on shelf.. that is why it always longer for them to develop any new vehicle compare to the ABC brand...

When you use the so called performance filter, you facing loss of power.. it not necessary the air filter is too chip plak.. it can be the A/F not working right for your car...

when you got A/F too high or low, you are the loser .. it sold as plug and play but not all the time is that simple and easy.. it take time to diagnose. Just like people all crazy for open pod in the late 90s. However, open pod is still very widely used, because drop in is still too much limitation.