performance filter

[richardtan]

Hello SiFus

If I use a good quality air intake filter for the engine, does it mean there is no adjustment to the ECU necessary? I mean, what if the air intake is so much the ecu does not know how to adjust the petrol to mix?

regards
Richard

 

[xMika]

Get a tuner ECU maybe ?

 

[hachiroku clan]

i think its a minor thingy and the ECU can calibrate itself..
but i might be wrong..

 

[Veloc]

No matter how high the performance of your air filter, I don't think the airflow in an NA engine will be so high that the ECU can't adjust. Stock MAP sensors and AFMs for NA engines are even made to operate properly under a bit of positive pressure. Just a little bit over normal atmospheric pressure. If not, engines will go haywire when running in cetain places near the coast or even sometimes at areas below sea level for example underground carparks. Even if you turbo the engine, the stock sensors can still function until a certain level where the ECU intervenes. So the extra airflow from upgrading air filter won't make a mess. Feel safe bro.
Sifus correct me if i'm wrong.

 

[D7zul]

Sure no problem one..

all injection engine have air sensor..

ur fuel mix is controlled by the ECU..

just control ur right foot, and u'll be fine

 

[richardtan]

Thanks to all Bros and Sifus of this wonderful forum.

Cheers!

 

[n0th1n]

wow, many opinion.
try use no filter, and check your exhaust gas with wideband sensor. then compare the result with wideband when using original filter. will it be same? (normal ecu will maintain stoich)
some more, higher air flow, such as velocity stack, you will feel the engine sluggish at low/high rpm (depends on the length of the V.S) why this happens? ecu cant compensate the higher volume of air. to overcome, re-tune air/fuel ratio and ignition.

 

[Veloc]

wow, many opinion.
try use no filter, and check your exhaust gas with wideband sensor. then compare the result with wideband when using original filter. will it be same? (normal ecu will maintain stoich)
some more, higher air flow, such as velocity stack, you will feel the engine sluggish at low/high rpm (depends on the length of the V.S) why this happens? ecu cant compensate the higher volume of air. to overcome, re-tune air/fuel ratio and ignition.

I think unstable idle and poor low-end torque from velocity stack and trumpets is mainly caused by poor mixing and atomisation of fuel. Because the air flow will only be fast at high rpms...

 

[richardtan]

Hi Sifus,

so , am i right you are saying that ECU should be adjusted for best effect?