Replacement Z/28 CAI Filter

[Moto-Mojo]

The search feature failed me. I have an SS with the Z/28 CAI. Where’s the best place to purchase a new filter element? Do you all ever just blow them out with compressed air?

Thanks, gents.

[SIM GhostrdrZ]

Rock auto and you can blow them out from the inside out, trying not to get too close with direct compressed air as not to destroy the filter fiber.
Good luck

[HoodCheck]

Never hurts to have a spare

https://www.amazon.com/dp/B00S0A689Y...v_ov_lig_dp_it

[Cvargz4589]

Originally Posted by HoodCheck

Never hurts to have a spare

https://www.amazon.com/dp/B00S0A689Y...v_ov_lig_dp_it

Nice, thanks for sharing! My original is in good shape & I just blew it out thoroughly last fall before I put the car away for winter. However, you’re right...never hurts to have a spare so I just snagged one myself!

[47Ronin]

Would you use also the air filter from K&N - the Rp-5168 - or only the oem?

https://www.knluftfilter.com/rp-5168...rbon-fiber-top



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[AustexaSS]

Originally Posted by 47Ronin

Would you use also the air filter from K&N - the Rp-5168 - or only the oem?

https://www.knluftfilter.com/rp-5168...rbon-fiber-top



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I would stay with the dry type disposable filter. I am not a fan of the washable reusable filters which most if not all require some type of oiling after cleaning to keep the filtration material in check. Apparently a lot of people tend to over oil the filtration material leading to fouled MAF sensors or other engine issues. Plenty of people have shared their after the fact problems / challenges in various vehicle forums. Since I don’t use washable filters I can’t speak further to their performance claims. It is worth noting the Z/28 OEM dry filter was made by K&N, it is mentioned in this article:

http://www.superchevy.com/news/2014-...parts-packages

[SIM GhostrdrZ]

Originally Posted by AustexaSS

I would stay with the dry type disposable filter. I am not a fan of the washable reusable filters which most if not all require some type of oiling after cleaning to keep the filtration material in check. Apparently a lot of people tend to over oil the filtration material leading to fouled MAF sensors or other engine issues. Plenty of people have shared their after the fact problems / challenges in various vehicle forums. Since I don’t use washable filters I can’t speak further to their performance claims. It is worth noting the Z/28 OEM dry filter was made by K&N, it is mentioned in this article:

http://www.superchevy.com/news/2014-...parts-packages

You are correct. Over oiling causes more issues. I have oiled K&N for all my other vehicles and very lightly oil them plus I keep MAF cleaner around. No issues with my current cars but I had a boosted one that would always foul the maf if I put any oil on.
Plus the “factory” one is less $

[47Ronin]

Originally Posted by AustexaSS

I would stay with the dry type disposable filter. I am not a fan of the washable reusable filters which most if not all require some type of oiling after cleaning to keep the filtration material in check. Apparently a lot of people tend to over oil the filtration material leading to fouled MAF sensors or other engine issues. Plenty of people have shared their after the fact problems / challenges in various vehicle forums. Since I don’t use washable filters I can’t speak further to their performance claims. It is worth noting the Z/28 OEM dry filter was made by K&N, it is mentioned in this article:

http://www.superchevy.com/news/2014-...parts-packages

Thanks!

Did I understand correctly that the problems you mentioned can only occur when I clean the filter and then oil it?
With a new filter there are no problems, only after cleaning and oiling it, right?



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[AustexaSS]

Originally Posted by 47Ronin

Thanks!

Did I understand correctly that the problems you mentioned can only occur when I clean the filter and then oil it?
With a new filter there are no problems, only after cleaning and oiling it, right?



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Most (not all) K&N filters come pre-oiled, new out of the box. The K&N F.A.Q page implies when over oiling occurs, let it sit. They also state there is no evidence of their reusable products creating issues with MAF sensors, but apparently other people disagree.

https://www.knfilters.com/faq

https://www.knfilters.com/maf/massairfindings.htm

The FAQ also states you could throw some error codes just by installing their filter for a variety of reasons.

I would think using one that is pre-oiled, new out of the box, poses less risk than you oiling it yourself, especially the first time.

I would also assume when you wash it the you could not get it clean enough leaving dirt and soap residue in the filter media before even getting to the oil application.

There are many of these filters in use on all types of cars but you have to ask yourself with the Z/28, if the K&N reusable filter was that much better why did the GM engineers opt for the dry filter instead, also made by K&N supposedly? They were already throwing all kinds of performance parts at the car and asking $76k for it, I don’t think another $20 would have broke the bank if the performance gains were that substantial. The same is to be said about this K&N product for our cars:

https://www.knfilters.com/blog/get-a...ur-z28-camaro/

I would be curious to know if another member here ever purchased one and what gains were observed.

[47Ronin]

Originally Posted by AustexaSS

Most (not all) K&N filters come pre-oiled, new out of the box. The K&N F.A.Q page implies when over oiling occurs, let it sit. They also state there is no evidence of their reusable products creating issues with MAF sensors, but apparently other people disagree.

https://www.knfilters.com/faq

https://www.knfilters.com/maf/massairfindings.htm

The FAQ also states you could throw some error codes just by installing their filter for a variety of reasons.

I would think using one that is pre-oiled, new out of the box, poses less risk than you oiling it yourself, especially the first time.

I would also assume when you wash it the you could not get it clean enough leaving dirt and soap residue in the filter media before even getting to the oil application.

There are many of these filters in use on all types of cars but you have to ask yourself with the Z/28, if the K&N reusable filter was that much better why did the GM engineers opt for the dry filter instead, also made by K&N supposedly? They were already throwing all kinds of performance parts at the car and asking $76k for it, I don’t think another $20 would have broke the bank if the performance gains were that substantial. The same is to be said about this K&N product for our cars:

https://www.knfilters.com/blog/get-a...ur-z28-camaro/

I would be curious to know if another member here ever purchased one and what gains were observed.

Thanks for this nice explanation.
That absolutely convinced me to keep my hands off the K&N filter.