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BMC, K&N or stay with stock filter

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18 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHBMC, K&N or stay with stock filter

Leading reported evidence

Run k&n

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

I run K&N on my Tundra and my 964, but too many people have had MAF failures using the K&N on 996's.

BMC, K&N or stay with stock filter
Frequently discussed work

Recommend k&n

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I wouldn't recommend the K&N on a 996.

BMC, K&N or stay with stock filter
Read full discussion summary

Leading evidence: 'Run k&n' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Recommend k&n' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

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1 matching discussions · 18 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Use k&n

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

I run K&N on my Tundra and my 964, but too many people have had MAF failures using the K&N on 996's.

BMC, K&N or stay with stock filter

Recommend k&n

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I wouldn't recommend the K&N on a 996.

BMC, K&N or stay with stock filter

Replace stock air filter

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

I'm considering changing my stock air filter to either a BMC or K&N.

BMC, K&N or stay with stock filter

Replace stock paper filter every year

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

You're probably better off just remembering to change your stock paper filter every year.

BMC, K&N or stay with stock filter
Frequently discussed actions (6)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Recommend k&n

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I wouldn't recommend the K&N on a 996.

BMC, K&N or stay with stock filter

Replace stock air filter

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

I'm considering changing my stock air filter to either a BMC or K&N.

BMC, K&N or stay with stock filter

Replace stock paper filter every year

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

You're probably better off just remembering to change your stock paper filter every year.

BMC, K&N or stay with stock filter

Run k&n

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

I run K&N on my Tundra and my 964, but too many people have had MAF failures using the K&N on 996's.

BMC, K&N or stay with stock filter

Use k&n

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

I run K&N on my Tundra and my 964, but too many people have had MAF failures using the K&N on 996's.

BMC, K&N or stay with stock filter

Use on the filter

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

What weight of oil should I use on the filter?

BMC, K&N or stay with stock filter
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

18 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

1 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link

No change in sound.

No unique explicit quoted action; no causal link assigned

Generation: 20261027T000231Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I'm considering changing my stock air filter to either a BMC or K&N. Not a big cost, but curious if it's worthwhile - any change in performance or sound? Any downside? Is one better than the other (BMC is more expensive)? Not looking to go with a CAI. I have the RSS plenum installed. Any thoughts appreciated. Cheers

POST 2Original post

It certainly doesn't hurt. I went with the BMC because I found a good deal on it, but K&N is probably fine too. No change in sound. In the past I've measured significant differences in power with K&N over paper filter but that was in a turbo application so the difference was probably magnified. On an NA engine I'd expect you make make another hp or two but nothing to write home about.

POST 3Original post

Go on ebay and order the red intake tube from Vertex. They have this new option where you can make an offer, just like the buy it now tab. You can even add the K&N filter for 69$.

POST 4Original post

I went with BMC myself and "definitely felt a difference." Seriously, it might be worthwhile if you have an aftermarket exhaust, tuned ECU, etc, but I don't think it matters as much as you think it will. You're probably better off just remembering to change your stock paper filter every year.

POST 5Original post

If you like dirt in your motor, buy the K&N. If you like busted MAF's, buy the K&N

POST 6Original post

As Tippy mentioned. Do a search on K&N filters or better yet, MAF failures. I wouldn't recommend the K&N on a 996. I run K&N on my Tundra and my 964, but too many people have had MAF failures using the K&N on 996's. The only thing that I feel it will give you is better sound.

POST 7Original post

Quotes source posts: 5651929, 5652003

We're talking about just filter panel replacements, right? Not the entire cone/cold-air kit?

POST 8 / ORIGINAL POSTEROriginal post

Thanks guys. I have the Softronic tune as well as the plenum. Not sure about the aftermarket exhaust yet ... stock allows some spirited driving w/o attracting as much attention I read the issues on the K&N CAI so had decided not to go that route and keep the stock air box. But it appears to be an issue with their flat panel replacment filters as well?

POST 9Original post

As I understand the issue, it's the oil used to activate the filter, to it would be an issue with CAI or just the flat panel filter. Personally, I think there's enough smoke to indicate fire on this problem.

POST 11Original post

If you get the BMC flat filter, does it need to be oiled?

POST 12Original post

Never mind, further searching yielded the answer. No, they come pre-oiled.

POST 14Original post

What weight of oil should I use on the filter? 0-W40 or 15-W50? Stay with the stock air filter set up.

POST 15Original post

I have a K&N filter for sale that's the shape of the stock filter, for $25 shipped... PM me!

POST 16Original post

Savannah, it's not another filter thread it was a question added on to an existing thread. It was a simple question to which I found the answer after posting the question. Keep your sarcasm to yourself.

POST 18Original post

AFE offers both oiled and oil-less filters: www.afepower.com . However, they mentioned that the oiled version flows more air than the dry.

This is a source reference. Confirm exact model applicability in the original material.