K&N 2204 A/F Replacement

[dobro]

I replaced the single OEM air filter with a single K&N TB-2204 filter. The surface area of the OEM filter's metal cover, which is not present on the K&N, appears to obstruct air flow by about 30%. While I can't tell a noticeable difference in performance, I don't think that would happen if the current tune's (tuneecu) air requirements were being met by the OEM. I can't see how this new K&N won't have more airflow simply because of the absence of the metal obstruction used on the OEM. I'm hoping to see that manifested when I have my PC5 installed and tuned. I know next to nothing about this subject and I would appreciate your thoughts as I have never seen actual flow rates for the K&N vs. the OEM filters.

 

[barbagris]

The issue is more complex. There are several flow bottlenecks in the intake system (pre and post filter) that will (& do) have more impact of the airflow to the engine than the K&N might appear to liberate.

 

[dobro]

The issue is more complex. There are several flow bottlenecks in the intake system (pre and post filter) that will (& do) have more impact of the airflow to the engine than the K&N might appear to liberate.

I accept that as being true. Surely, there are numbers directly comparing the performance of OEM vs. 2024 vs. triple 1780's on the same engine/exhaust; otherwise, we're limited in the accuracy of our assessment

 

[barbagris]

Search away - it was done a LONG time ago if so. I've had my R3 since 2010 and it was already old news by then.

I have run stock, single filter attached to inner plenum, triple RU-2780 and now the Ramair. Never bothered with the underseat K&N as :-

1) I'm not a great believer in "stock-replacement" K&N's based on experience.
2) I wanted the filter box for storage.

The two major restrictions are:-

1) The "snorkels" in the seat base that lead to the filter - These are VERY small and very easy to block.
2) The ovals that link the inner and outer plenum. The minute you eliminate these - it breathes as it should.

 

[dobro]

Search away - it was done a LONG time ago if so. I've had my R3 since 2010 and it was already old news by then.

I have run stock, single filter attached to inner plenum, triple RU-2780 and now the Ramair. Never bothered with the underseat K&N as :-

1) I'm not a great believer in "stock-replacement" K&N's based on experience.
2) I wanted the filter box for storage.

The two major restrictions are:-

1) The "snorkels" in the seat base that lead to the filter - These are VERY small and very easy to block.
2) The ovals that link the inner and outer plenum. The minute you eliminate these - it breathes as it should.

If someone finds numbers directly comparing stock, K&N 2204 and the triple 2780's I hope they direct us to them. I bought the 2204 for $45 and it looks like it will flow much better than stock. IMO it's at least worth a basic investigation before excluding it since the stock filter produces more torque up to 4000 rpm than the 2780's.

 

[albertaduke]

If someone finds numbers directly comparing stock, K&N 2204 and the triple 2780's I hope they direct us to them. I bought the 2204 for $45 and it looks like it will flow much better than stock. IMO it's at least worth a basic investigation before excluding it since the stock filter produces more torque up to 4000 rpm than the 2780's.

how did you find that the 2780 provided less torque than the OEM filter below 4000rpm ? honestly . I changed from OEM to 2780 but never felt a difference ?? moot point now I have ramair's on

 

[dobro]

how did you find that the 2780 provided less torque than the OEM filter below 4000rpm ? honestly . I changed from OEM to 2780 but never felt a difference ?? moot point now I have ramair's on

A post by Power-Tripp on 7-30-13 in "single k&n vs. 3 k&n filters".

 

[albertaduke]

A post by Power-Tripp on 7-30-13 in "single k&n vs. 3 k&n filters".

thanks I will go back to that post

 

[dobro]

I replaced the single OEM air filter with a single K&N TB-2204 filter. The surface area of the OEM filter's metal cover, which is not present on the K&N, appears to obstruct air flow by about 30%. While I can't tell a noticeable difference in performance, I don't think that would happen if the current tune's (tuneecu) air requirements were being met by the OEM. I can't see how this new K&N won't have more airflow simply because of the absence of the metal obstruction used on the OEM. I'm hoping to see that manifested when I have my PC5 installed and tuned. I know next to nothing about this subject and I would appreciate your thoughts as I have never seen actual flow rates for the K&N vs. the OEM filters.

After riding with the K&N for a couple of hours I have noticed a difference: more torque in 4th and 5th. I'm running a downloaded tune for Jardines with triple K&N's; with the stock a/c torque flattened in 4th and 5th. I realize my impression might be the product of the power of suggestion but it seems very real to me.