[en8wall]

I might consider some basic mods on my car. Thiinking back years to the Mk2 Escort, Chevette HS years we all went for Janspeed exhaust and K&N air filters.
Has anyone heard yet whether there are performance air filters available, that replace original in it's housing. Looked on K&N site and can't see anything?

 

[en8wall]

Panic over.
Just tried K&N.com rather than UK, they do a replacement filter for Scion FRS/Subaru BRZ(see link) and it costs £39.97. Reasonable!!

http://www.knfilters.com/search/product.aspx?Prod=33-2300

Edited by: en8wall

 

[Kodename47]

Dude.... I wouldn't bother!!! Having read one blog where they tested the standard air box with the standard filter and then with no filter at all, there ws no power difference at all!!! The standard filter is very good,and there is no power to be gained in thestockairboxso save yourself the £40.

The only way you'll improve the intake is by replacing the airbox like the Injen one, which seems to get good reviews.



http://www.injen-europe.com/toyota/gt-86-br-z-short-ram-intake-system.html



But at over £400 I'm not convinced the value is worth it.

 

[Kodename47]

Here ya go, I found the link of the blog..... a good read:
http://blog.perrinperformance.com/brz-intake-design-and-proving/

 

[en8wall]

"What we have learned is we will be offering two intakes. One that runs very close to the stock MAF curve, this will suite the more common customer that doesn’t need or want a tune, but would rather get some really cool sounds along with a bit of HP. The other intake will require an ECU retune, and is designed for the customer who wants the maximum HP from his car."


The modification of standard system sounds like what i'd be after. Bit more noise and hp. Was interesting to see the noise generator hole in the car interior.

Edited by: en8wall

 

[Kodename47]

Maybe scratch my last comment.... this may be worth a read.


http://www.ft86club.com/forums/showthread.php?t=13245



Shows they do make some power. Although I am a little dubious seeing as I've seen some dyno runs that with the temp increase of the engine the power runs get better to a point and then hit a wall

Sothe stock run shows lower down on power but if they had put the stock filter in and run at the end of the day I have a feeling it may have made similar power to the replacement filters.... I'll leave you all to make your mind up.....
Edited by: Kodename47

 

[Whitey83]

Tricking the maf is limited and not the best we had issuses on the gto forum where people running maf t pro kits would be capped at 390-400bhp and the car never runs spot on, its a start for now but it will either need a remap or even better but expensive a stand alone ecu.

 

[Kodename47]

No-one's mentioned tricking the MAFsensor and that's not a good idea

The idea behind the best kits is to use the standard pipe and sensor. Those that make the pipe largerwill need a ECU tune to counter-act the change in MAF readings.






If they have decent control over the standard ECU, there will be no need for a standalone unit no matter what mods are done. IMO standalones are options when all the others have been expended.

 

[Whitey83]

fair point my mistake lol

 

[Kodename47]

Yup

No worries mate. MAF sensor trickery is always a possibility and you know eventually someone on ebay will try and sell cheap "performance" mods for the 86 which will do just that. Ideally clearing this up will stop someone wasting money on the tat that could possibly do some damage

 

[lukmanaryadi]

i've installed Simota replacement air filter racing (stainless) on my GT86

 

[Guest]

Dude.... I wouldn't bother!!! Having read one blog where they tested the standard air box with the standard filter and then with no filter at all, there ws no power difference at all!!! The standard filter is very good,and there is no power to be gained in thestockairboxso save yourself the £40.

The only way you'll improve the intake is by replacing the airbox like the Injen one, which seems to get good reviews.



http://www.injen-europe.com/toyota/gt-86-br-z-short-ram-intake-system.html



But at over £400 I'm not convinced the value is worth it.

If it gains 8-9BHP as suggested looks like pretty good value to me. We always approximated £100 per 1BHP gain and this is twice that.

 

[ICantAffordAnLFA]

I'd wait to see the Lichfield remap figures.

 

[Kodename47]

That's my plan

The filter results just seem too unreliable that I take it all with a pinch of salt.

 

[Stu]

I dare anyone to put a depression/vacuum gauge after the stock air box and then do the same test with any of these aftermarket filters and see if there is any measurable difference. It's also worth noting that any drastic changes to the inlet tract will skew the MAF sensor calibration and may affect the fuelling.

 

[Carbon Ninja]

gt_sjo, I guess you are trying to validate the pressure drop differences?

 

[Stu]

gt_sjo, I guess you are trying to validate the pressure drop differences?

I'm not - I have a good idea of what the result will be!

 

[ICantAffordAnLFA]

Intakes need another six months imho

 

[Ade]

gt_sjo, I guess you are trying to validate the pressure drop differences?

I'm not - I have a good idea of what the result will be!

On the ft86 club theysomeone removedthe air filter completely and it had no affect. Therefore, no filter is going to give an improvment.


Adding bigger intake pipes (and telling the ECU for correct MAF readings) looks like it might add some more power... only abotu 2-4HP thoguh from what i have seen on the FT86 club...

 

[Martin F]

Replacing the panel filter within the OEM box with something which is a little more free flowing may make a small improvement, but it will be small on an NA engine.