GR86 Performance Panel Filters

Conscript

Totally Hooked
Joined
Apr 20, 2022
Messages
2,792
Reaction score
5,448
Location
Kent, UK
Anyone tried one yet?

I'm aware that they have pretty much negligible performance gains. But I had an HKS hybrid filter on the old car which helped add a little induction noise; and I could swear that it made the engine feel a little more peppy at the top end, and made it feel a little more eager to rev. For £30 odd, it wasn't a bad little mod to make - as long as you managed your expectations. Has anyone here installed one yet?
 
I installed HKS, as on my GT86 before and it does exactly what you wrote.
Got it from Fensport UK
 
I've previously used K&N replacement filters, as they're washable, but this time decided to go with a HKS. Can't say it's made much of a difference, but with the exhaust swap (and the sound generator turned off) it all sounds better.
 
I still use K&N in my 17' and to me it seems like it gives better throttle response - I like it because it comes with rubber seal just like OEM GR Yaris and GR86 ones. Tried HKS before and I hated it for it's stupid plastic frame that makes inspecting air filter unnecessarily hard (especially if oil cooler thermostatic plate and AN fittings are nearby). For GR86 and GR Yaris I'm sticking with OEM
 
So just swapped out for the Blitz (the blue on) air filter now from the HKS, looks good to me, not sure will make much difference but always liked small easy mods. Having said this, the panel was a pig to fit back in and slot into place and takes a bit of persuasion. At one point I thought it wouldn't fit.
IMG_6855.webp
 
Apexi was especially appreciated by the GT86 drivers from what I read on other forums, I haven't unfortunately found it yet for the ZN8 - GR86.
 
Apexi was especially appreciated by the GT86 drivers from what I read on other forums, I haven't unfortunately found it yet for the ZN8 - GR86.
Agree, I think Apexi are dry filters too so less chance of throwing up a check engine light.
 
I've had the HKS one fitted for about 6 weeks and tbh it's not really made much difference other than what I expected. Slightly more induction noise and perhaps a little peppier at the top end.
 
Fitted the HKS panel filter and also the Blitz Suction Pipe this afternoon . Initial impressions from a drive this evening are:

Not much difference in induction noise
Seems a bit more responsive on the throttle
Invidia exhaust system making a few more pops

IMG_3611.webp


I only bought these as I was scratching an itch for more induction noise but couldn’t justify buying the new HKS kit!

I was surprised at how the car seems more responsive now when getting on the throttle in the corners, seems to pick up that bit faster.

Disappointing that it doesn’t make much noise but I could always add one of the bonkers looking Blitz intakes. Not sure why there are so many different ones, Fensport look to have four?


Bit reluctant to buy one of these without better ducting of cooler air…
 
Disappointing that it doesn’t make much noise but I could always add one of the bonkers looking Blitz intakes. Not sure why there are so many different ones, Fensport look to have four?


Bit reluctant to buy one of these without better ducting of cooler air…

Cool air would be the least of your concerns, if you are considering one of those just run your intake without a filter, it would be cheaper. Those intake kits uses a wire mesh for a filter, totally inadequate for use on the road. In fact most aftermarket filters probably don't conform to a decent standard of filtration, this subject has been spoken about on the Yaris....

Induction kit filtering quality
 
Fitted the HKS panel filter and also the Blitz Suction Pipe this afternoon . Initial impressions from a drive this evening are:

Not much difference in induction noise
Seems a bit more responsive on the throttle
Invidia exhaust system making a few more pops

View attachment 20040

I only bought these as I was scratching an itch for more induction noise but couldn’t justify buying the new HKS kit!

I was surprised at how the car seems more responsive now when getting on the throttle in the corners, seems to pick up that bit faster.

Disappointing that it doesn’t make much noise but I could always add one of the bonkers looking Blitz intakes. Not sure why there are so many different ones, Fensport look to have four?


Bit reluctant to buy one of these without better ducting of cooler air…
Looks good, I guess for some extra induction noise, you would need a cone filter.
 
Anyone tried one yet?

I'm aware that they have pretty much negligible performance gains. But I had an HKS hybrid filter on the old car which helped add a little induction noise; and I could swear that it made the engine feel a little more peppy at the top end, and made it feel a little more eager to rev. For £30 odd, it wasn't a bad little mod to make - as long as you managed your expectations. Has anyone here installed one yet?
Tried a drop-in filter but noticed no difference in power or throttle response compared to the stock airbox with the charcoal filter removed. Noise change was barely noticeable.
 
Tried a drop-in filter but noticed no difference in power or throttle response compared to the stock airbox with the charcoal filter removed. Noise change was barely noticeable.
Guessing you're in the US? We don't have those charcoal filters in the UK cars, but I saw the video showing quite a marked improvement on the dyno just from cutting them out.
 
Any further suggestions or recommendations for a panel filter as the only mod?
I’ve switched off the sound generator so main aim is a little more induction noise, I can’t justify the £500+ for the full K&N induction type
 
Any further suggestions or recommendations for a panel filter as the only mod?
I’ve switched off the sound generator so main aim is a little more induction noise, I can’t justify the £500+ for the full K&N induction type
I'm not sure it's worth it. I bought the HKS super hybrid panel filter as it's quite cheap. I had it on the older car and it added a little more intake noise, and perhaps made the engine feel a little freer at the top end, but nothing objective. With the GR, if there's any similar improvement, then it's less pronounced than before.

I've kept it in for now, but I also didn't bin the OEM panel filter. When it comes time for the filter to be replaced as part of the service, I might just stick the still fairly fresh OEM one back in. I think that if you want to really improve the intake sound, you're going to have to go for a full induction kit - but even then, I wouldn't expect much performance gain.
 
Any further suggestions or recommendations for a panel filter as the only mod?
I’ve switched off the sound generator so main aim is a little more induction noise, I can’t justify the £500+ for the full K&N induction type
It depends if you care about performance gains / losses or just noise.

If you want to keep or "possibly" increase performance while having any increase in intake noise it's going to cost a lot.

If you just want a nice noise and don't care for performance then just look for the best priced pod filter that fits.
 
it has been proven in many tests over the years that a brand new OEM Paper filter will flow better than any aftermarket panel filter. Only after a certain usage will the OEM start to loose out to the aftermarket filter.
 
Just for the noise, even if slight. I disconnected the sound generator (15 months later than I should have!) which is much better but now being fairly quiet its adding a bit back would be ideal. For another value for money option, there is a 2nd cat delete pipe which Im tempted to experiment with and see what happens.
 
For another value for money option, there is a 2nd cat delete pipe which Im tempted to experiment with and see what happens.
The front pipe has a GPF in it not another cat, you will likely throw the CEL up and it wont pass an MOT.
 
Back
Top