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Check engine light after Fabspeed airbox upgrade

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

Discussion summary

YOUR RESEARCHCheck engine light after Fabspeed airbox upgrade

Leading reported evidence

Install maf and did a diagnostic check

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

After almost a 3 month wait and one day before Thunderhill Track Day they installed the new MAF and did a diagnostic check on the computer and the readings indicated that it was running lean and my Tech said the check engine light was likely to go on again.

Check engine light after Fabspeed airbox upgrade
Frequently discussed work

Check engine went

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

My check engine went on after about 100 miles with my FabSpeed air flow mod.

Check engine light after Fabspeed airbox upgrade
Read full discussion summary

Leading evidence: 'Install maf and did a diagnostic check' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check engine went' (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 · 15 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Reconnect battery

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 · Original poster

Went a few hundred miles and no luck so I put the plastic mesh screen back in and dis/reconnected the battery.

Check engine light after Fabspeed airbox upgrade

Run another diagnostic

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

Since the engine management system goes into a protect mode when the check engine light goes on I went home and put the black plastic screen (the one that fabspeed says remove) back on and went back to my dealer and we ran another diagnostic check on the computer the readings indicated everything was perfect.

Check engine light after Fabspeed airbox upgrade

Run awsome the next day

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

The car ran awsome the next day with new Porsche Sport Exhaust and the screen is still on and no check engine light alluminated.

Check engine light after Fabspeed airbox upgrade

Check engine went

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

My check engine went on after about 100 miles with my FabSpeed air flow mod.

Check engine light after Fabspeed airbox upgrade
Frequently discussed actions (8)

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

Check engine went

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

My check engine went on after about 100 miles with my FabSpeed air flow mod.

Check engine light after Fabspeed airbox upgrade

Check on the computer and the readings indicated

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

After almost a 3 month wait and one day before Thunderhill Track Day they installed the new MAF and did a diagnostic check on the computer and the readings indicated that it was running lean and my Tech said the check engine light was likely to go on again.

Check engine light after Fabspeed airbox upgrade

Check on the computer the readings indicated everything was perfect

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

Since the engine management system goes into a protect mode when the check engine light goes on I went home and put the black plastic screen (the one that fabspeed says remove) back on and went back to my dealer and we ran another diagnostic check on the computer the readings indicated everything was perfect.

Check engine light after Fabspeed airbox upgrade

Install maf and did a diagnostic check

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

After almost a 3 month wait and one day before Thunderhill Track Day they installed the new MAF and did a diagnostic check on the computer and the readings indicated that it was running lean and my Tech said the check engine light was likely to go on again.

Check engine light after Fabspeed airbox upgrade

Reconnect battery

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 · Original poster

Went a few hundred miles and no luck so I put the plastic mesh screen back in and dis/reconnected the battery.

Check engine light after Fabspeed airbox upgrade

Reset computer and see if it happens

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

2) Pull the battery cable, reset the computer and see if it happens again?

Check engine light after Fabspeed airbox upgrade

Run another diagnostic

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

Since the engine management system goes into a protect mode when the check engine light goes on I went home and put the black plastic screen (the one that fabspeed says remove) back on and went back to my dealer and we ran another diagnostic check on the computer the readings indicated everything was perfect.

Check engine light after Fabspeed airbox upgrade

Run awsome the next day

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

The car ran awsome the next day with new Porsche Sport Exhaust and the screen is still on and no check engine light alluminated.

Check engine light after Fabspeed airbox upgrade
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.

15 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.

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

Generation: 20261026T183130Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I did a search and found that some of you had the check engine light come on after the install. It just went for me after 100 miles of driving it with the new airbox mod from Fabspeed. So what are my options? 1) Let the computer relearn it and hopefully it will go off in another 100-200 miles. 2) Pull the battery cable, reset the computer and see if it happens again? 3) Go back to stock?

POST 2Original post

3,000 miles since I installed mine..no check engine lights. I would not assume that the airbox was the cause of the light.. I'd get it over to the dealer. Perry

POST 3Original post

At least 5,000 HARD miles with mine plus a bunch of other mods and no CEL for me

POST 4Original post

To those of you that have the Fabspeed airbox, what are the noticeable (sound and speed)changes?

POST 5Original post

a little better sound. probably not much gain in HP/Torque but the power curve is much smoother.

POST 6 / ORIGINAL POSTEROriginal post

Light is yellow, caused by the mod for sure. I guess I'll just ride it out until it resets itself.

POST 8Original post

Had the fabspeed intake for 5k miles and never has triggered the MAF sensor. Now I have the airetek high flow one and it hasn't yet either. It may come down to the MAF sensor being contaminated which is entirely possible especially installing. I don't think by leaving it alone will solve the problem but who knows but if it does readjust that's great. You may put back the stock one and see if check engine lite triggers the the MAF is definitely the problem. Regards. Mike

POST 9Original post

No CEL for me either after 6 months with the Fabspeed/ BMC filter/ sealing of the hot air intake holes in airbox bottom.

POST 10Original post

Did you call Fabspeed and let them know of this problem? It's not cool to let the check engine light stay on, you never know when your O2 sensors might go or even other sensors.

POST 11Original post

My check engine went on after about 100 miles with my FabSpeed air flow mod. Had my dealer put the car on the computer and there was a MAF fault. The dealer said it could be a bad MAF, so they back ordered one. After almost a 3 month wait and one day before Thunderhill Track Day they installed the new MAF and did a diagnostic check on the computer and the readings indicated that it was running lean and my Tech said the check engine light was likely to go on again. Since the engine management system goes into a protect mode when the check engine light goes on I went home and put the black plastic screen (the one that fabspeed says remove) back on and went back to my dealer and we ran another diagnostic check on the computer the readings indicated everything was perfect. The car ran awsome the next day with new Porsche Sport Exhaust and the screen is still on and no check engine light alluminated. I think some cars will like the full air mode and some don't. Try putting the black screen back and drive your car three or four trips and tell us what happen.

POST 12 / ORIGINAL POSTEROriginal post

I'm going to give the car another 100 or so miles to see if the light goes off. If it doesn't, I'll try putting the screen back in.....

POST 13 / ORIGINAL POSTEROriginal post

Went a few hundred miles and no luck so I put the plastic mesh screen back in and dis/reconnected the battery. After 300 miles, no light.....

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