Charcoal intake filter removal testing & RESULTS - Page 11 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Ultramaroon · 07-22-2022, 03:04 PM

Quote:

Originally Posted by ROFL it's Waffle

What does the owners manual say about the charcoal filter? Is this considered a forever item, or "change regularly"?

It's a permanent part of the airbox on my daughter's '08 ES350.

Chrisz5z · 07-22-2022, 03:34 PM

Quote:

Originally Posted by ROFL it's Waffle

What does the owners manual say about the charcoal filter? Is this considered a forever item, or "change regularly"?

No mention of it in the GR86's Owners Manual or Maintenance Interval booklet(Pages 37-40).

I guess they have 100% confidence that the regular air filter will do its job & that every single owner will be diligent with their maintenance

KillerBMotorsport · 07-22-2022, 03:47 PM

Has anyone compared the USDM and JDM tunes to make sure this isn't just skewing AFR?

I know with AMGs this is a common mod, but the US tunes is different than the (what they call ROW; Rest Of the World). Doing this mod, and keeping the fuel trims where they should be requires a tune.

I would assume if these same parts when removed from the BRZ have an impact on airflow, they are also having an impact on the tune, or at least the trims. Would also be interesting to see a back-to-back test done (on the BRZ) after Short AND Long Term Fuel trims have finished learning. With the AMGs, they would often loose a bit after some time, without an accompanying tune.

Food for thought.

DarkSunrise · 07-22-2022, 04:41 PM

Quote:

Originally Posted by KillerBMotorsport

Has anyone compared the USDM and JDM tunes to make sure this isn't just skewing AFR?

I know with AMGs this is a common mod, but the US tunes is different than the (what they call ROW; Rest Of the World). Doing this mod, and keeping the fuel trims where they should be requires a tune.

I would assume if these same parts when removed from the BRZ have an impact on airflow, they are also having an impact on the tune, or at least the trims. Would also be interesting to see a back-to-back test done (on the BRZ) after Short AND Long Term Fuel trims have finished learning. With the AMGs, they would often loose a bit after some time, without an accompanying tune.

Food for thought.

I’ve always wondered this about b2b dyno testing with new parts.. You test the new part before fuel trims have had a chance to adjust, which means the engine runs slightly lean on the dyno and inflates the actual gains. Would love to see how the AFR looks in these dyno comparisons.

Tokay444 · 07-22-2022, 07:15 PM

Quote:

Originally Posted by Tcoat

Not one person has said or even implied that.

Lies.

Tokay444 · 07-23-2022, 07:23 AM

Quote:

Originally Posted by Ogt

I still have mine…. I believe… forgot to toss it so if @Tcoat allows it<3….
I will post pictures of contents.

If it’s not required then perhaps it’s some Subaru green-earth-virtue move? Just speculating based off of the emails I get now.

Just send to him so he can double up.

LancePower · 07-23-2022, 05:48 PM

Quote:

Originally Posted by Tokay444

Just send to him so he can double up.

FTW

ROFL it's Waffle · 07-26-2022, 09:14 AM

Quote:

Originally Posted by Tokay444

Lies.

In this thread.

weederr33 · 07-26-2022, 09:36 AM

Hey guys, I just took out my cabin filter and dyno'd my car. It made roughly 6hp more without the filter! If you want a free and easy mod, take out your cabin filter. Hashtag 1Gen Master Race.

Tcoat · 07-26-2022, 09:46 AM

Quote:

Originally Posted by Tokay444

Just send to him so he can double up.

Oh I should just put the whole new intake in my 2020. Should be good for at least a 20HP increase even with the charcoal one there!

Tokay444 · 07-26-2022, 10:46 AM

Quote:

Originally Posted by Tcoat

Oh I should just put the whole new intake in my 2020. Should be good for at least a 20HP increase even with the charcoal one there!

Show your work.

Tcoat · 07-26-2022, 11:35 AM

Quote:

Originally Posted by Tokay444

Show your work.

Saw it in the internet.

CincyJohn · 07-29-2022, 12:49 PM

Quote:

Originally Posted by RandyBui

Really interesting food for thought.

Indeed, which is the reason I didn't run out to immediately do this mod. I will eventually, probably at the same time I put on my catless JDM UELs and tune the car.

dragoontwo · 07-29-2022, 12:54 PM

Quote:

Originally Posted by CincyJohn

Indeed, which is the reason I didn't run out to immediately do this mod. I will eventually, probably at the same time I put on my catless JDM UELs and tune the car.

You got the low quality bait.

07-26-2022, 09:36 AM	#149
weederr33 Airborne at your service Join Date: Sep 2014 Drives: '17 BRZ Series.Yellow Location: El Paso, Texas Posts: 6,325 Thanks: 4,528 Thanked 5,586 Times in 2,928 Posts Mentioned: 33 Post(s) Tagged: 2 Thread(s)	Hey guys, I just took out my cabin filter and dyno'd my car. It made roughly 6hp more without the filter! If you want a free and easy mod, take out your cabin filter. Hashtag 1Gen Master Race. __________________ Series.Yellowbird - http://www.ft86club.com/forums/showthread.php?t=122135 MS, CSCS, TSAC-F, CPT

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07-22-2022, 03:47 PM	#143
KillerBMotorsport Join Date: Apr 2021 Drives: BRZ Location: Virginia Posts: 568 Thanks: 89 Thanked 710 Times in 324 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Has anyone compared the USDM and JDM tunes to make sure this isn't just skewing AFR? I know with AMGs this is a common mod, but the US tunes is different than the (what they call ROW; Rest Of the World). Doing this mod, and keeping the fuel trims where they should be requires a tune. I would assume if these same parts when removed from the BRZ have an impact on airflow, they are also having an impact on the tune, or at least the trims. Would also be interesting to see a back-to-back test done (on the BRZ) after Short AND Long Term Fuel trims have finished learning. With the AMGs, they would often loose a bit after some time, without an accompanying tune. Food for thought.

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