Feemono

From what I gather any break in would not have a significant effect in the grand scheme of the noise in our cars. It seems to be more a tonality thing rather than SPL. Like you say though, split thinking on it and even between esteemed speaker designers/bods. Personally I think there must be an element of truth to it in some cases/certain drivers but I can't say I've ever noticed it because by the time you put in the considerable hours for them to break in you've no reliable reference for exactly what they sounded like to start with. It doesn't appear to be a measurable thing.

My my, are these legit order-able ? I was just looking at the prop shaft for the GR86 which I gather is lightened over the GT86. And I see some synchromesh bits also. I wonder just how much of the GR86 we can buy!! Probably work out in Toyota's favour seeing as they're stalling so much in getting the actual GR86 here.

That's exactly the same spec as mine. edit/ sorry no i've got the half leather seats. So everything about the Pro that Luke wrote but minus the spoiler

Bright rust 2017s with no rear spoiler represent! Not many of them out there i don't think.

My ideal 86 would sport a light revvy flat 6 but that is next to impossible/insanely expensive and complicated. I'd been thinking down the lightening/attempting revvier FA20 by flywheel/propshaft/intake/electric water pump (cribbed off Adrian @Fensport's car) but I get the impression that one would still be fighting an uphill battle. In my experience the GT86 is actually a heavy car. Not helped by a heavy engine with heavy parts. In short I guess I'm wanting to turn the FA20/GT86 into something it's not. Perhaps a reasonably priced Exige V6 is a route to that end at some point in the distant future. Anyway I spoke to Scoobyclinic the other day about a completely unrelated car and mentioned as much about the above and the chap there was extolling the virtues of twin screw superchargers. Low down torque is indeed something I'm after (as well as/aside from the smoothness/power delivery of a 6 cylinder) and after getting my 86 back on the road after 4 months away from it I think the bloke at Scoobyclinic might've seeded something. My biggest misgiving about the FA20 is the fact it doesn't rev up sharply. Once you've driven a TVR straight six not much will compare but that's a whole other kettle of bananas. I'm now wondering, instead, how about a supercharger vs attempting lightness vs selling in the next 6 months and putting my name on the list for a GR86? There are a few things I could still do with a supercharger to minimise weight which apparently would add around 27kg for the Sprintex. I'd guesstimated a 70kg weight reduction would be noticeable on the the stock GT86. Already lost a kg or two with the Tomei UEL I have on there with Fensport tune (top work there, elated with what they did with the engine, props again to Andy at Fensport for fitting) but it's a very difficult endeavor to try and get the other ≈68 kg off. Wheels/carbon fenders/batteries etc would be in that plan but also could apply to a supercharged car. In terms of throttle response forced induction may somewhat compromise immediacy but would net me the low down torque I'm after. I was loathe to add anything else to the crank auxiliaries as I'd laid blame at the flat engine's dual DOHC heads/AVCS but, pft, can't have it both ways and I'm still intrigued by the neatness Adrian's electric water pump setup enabled subtracting a pulley and tensioner or two So, completely foregoing all that expense and complication there's the third option: GR86 ! I'd likely sell in the next 6 months whilst used prices are high and my GT86 has only done 19.5k. The other big plus of the GR86 for me is the upgraded transmission and drivetrain parts. I've already twice attempted to address 3rd-2nd shifts with gearmount inserts and latterly the TRD mount and there's also still TRD/STi engine mounts + diff mounts to try but the GR86 would have drivetrain improvements there + torquier engine already in situ from the factory. It's a whole thread in itself spending ££ on a low mileage 2017 86 vs a GR86 but it's only mechanical upgrades that concern me in that equation. Realistically, given funds I'd only be able to do one or the other and I'm not inclined to go halfway on this car only to be unsatisfied and have to start again with the GR86. I must've already spent over £3k on mods (have done catless manifold and tune twice). Interested to hear opinions from people with experience. Obviously very few in the country have tried a GR86 so that's a kind of can I wait til mid/late 2022 to demo situation and in all honesty I'd be sensible to concentrate on more driving lessons in the interim to better make use of what is a very capable car that far outstrips my skill. Still covet that lightness though, just don't think it's realistic. Nice one, cheers

Big thanks Will for that and cheers Aaron as this whole thing was baffling me and making me question everyone who's worked on the car including the Toyota dealership who I purchased it from. I didn't like the title of the TD thread elsewhere on the forum but I went and vented in there anyway with my thoughts on TD but suffice to say in here, was thinking to ask TD for a branch resonator back but I don't think I'll venture the energy on it now. My current thinking is to try and get my hands on a used Japanese/Aus/North American air intake as that'll net me the missing resonator and improve the airflow as a whole. Just a shame someone else isn't paying for it... I can't get a straight answer as to whether the updated 2017 air intake will fit neatly on the UK car's Zenki manifold though. Conflicting reports on one of the American forums I forget which. Thanks again guys!

Didn't have a great follow up customer experience with Mike & TD after getting a manifold & tune done. Didn't want to vent as an internet forum not really a graceful place for it but since people are speaking up please allow me to add for completeness sake. Disbelief on his part that anything could be wrong with the work they'd done and an unwillingness to look at the car again followed by an email or two before no reply. Finally got a reply out the blue to say I could bring it in by which time I'd washed my hands of them. I just started to write an email to them to ask for the branch resonator back I now assume (thanks W300) they threw away after fitting the manifold but from the way this thread reads I'll perhaps not waste my energy. All our performance at work wavers at times it's natural. It was the stubbornness to accept so afterwards that annoyed me. Or at least a ready willingness to help resolve/understand the problem. Green customer wrong mmkay.

Interesting. In between that, the snicky triple synchros, the transmission fluid warm up, the slightly indefinite clutch spring assist, the variable throttle mapping and the lack of low down torque the GT86 doesn't always make for the most fluid driving experience ey! I need to focus on my clutch action as I had an operation on my left knee which has left me with tight tendons etc and as a result I tend to just lift my whole leg off the pedal rather than pivoting at the ankle. I think it messes up the exact point at which I declutch so whilst I think I've rev matched pretty well there ends up being a discrepancy. Again, very grateful for the responses which are helping to illuminate all these little gremlins out to sabotage my driving. We all have our reference points and mine is an old 16V 1.6 SOHC FWD Mazda 323f. That thing revved like billy-o and I could change gears almost instantaneously. Years later moving over to a RWD car with x kgs of two piece propshaft spinning is quite a different proposition. Up to that point all the RWD cars I'd driven were automatics with a Volvo 340 being the manual transaxle outlier. Always felt like I was driving a tractor with that thing. Someone remind me again how much Fensport charge for installing that Samsonas sequential box? 😆

Ah thanks. I'll have a check there to make sure everything is in order. I was reading the other day about crankcase ventilation vis-a-vis oil catcher cans but like you say they seem to be more imperative in practice on turbo'd engines. Thanks again for all the replies, there's so much to learn about on these modern engines. Not that I knew much about simpler engines in the first place but there's so many auxiliary components on the FA20/GT86 that whatever you think you know you end up probably not knowing lol. Now where did I put that SOHC EJ22 I was gonna swap in...

Eeee, straight from the horse's mouth! Not that I'm calling you a horse (; Well the suspense is killing me still. The way I drive day to day I seem to bump up against this issue of choking/momentary hesitance when reapplying throttle at low engine speeds so I was hoping it would at least be partly ameliorated with the resonator. I'm still gonna harangue the Toyota dealership for it. Thanks for managing my expectations though Deacon As luck would have it someone's breaking a GT86 in my hometown and they've listed the exact part I need... for £49 😐 Interestingly as well, out of the Perrin and Mishimoto intakes that reside in front of the engine bay in the bumper Mishimoto's retains this dingleberry as they say in testing it did contribute towards performance whereas the Perrin dispenses with it. I feel a bit like Lloyd in Dumb and Dumber, "This branch resonator will improve your performance by 1/1,000,000th" Me: "So you're saying I can improve the performance on my car?!" All this came about quite by accident as I've been looking into replacing the UK airbox with the JDM/Aus/N. American 2017 one. 0.577 m2 increased filtration area, it'll be like adding bloody nitrous oxide to the car 🤣

Is just the type of weird debacle that befalls me this missing resonator. But on the plus side I'm looking forward to definitely having an improvement in throttle response when I put it back in the system! Fuji/Toyota would not have added the cost of that piece if it didn't improve things.

This is the fella https://www.ebay.co.uk/itm/294414294503?fits=Model%3AGT+86&hash=item448c759de7%3Ag%3AV5sAAOSwB9RhTE-d&LH_ItemCondition=3000 I mean, I could be totally wrong and that part has nothing to do with performance, it merely holds your spare paintballs 😂

No there should a dingleberry on the 90 degree bend towards the throttle body. The intake hose that many replace when doing the sound generator delete. I got the inkling that there was an issue from some of @Kodename47 posts here and there where he was experimenting with removing said branch resonators only for the engine to bog. It happens on my car at low engine speed gear changes, the engine momentarily chokes just once as if it was just about about to stall. It's made the car crap to drive but I initially just took it to be the factory tune/stock catted manifold. Then I got the car tuned + aftermarket manifold and it happened worse n I told the tuner who disbelieved that it could happen. I washed my hands of that tuner because of that. Not their fault I see now but the way they responded made me not want to deal with them anymore. I then took it to another tuner a year later for another manifold + tune and it was better I think through brute force in a way whilst we had hot weather in the summer. When I was at Drive Limits the instructor (I forget his name) mentioned I should get the intake checked for leaks as the revs fell unnaturally slowly on an emergency brake stop. I've not been driving the car much due to living away but it's my only car now so after replacing the battery and driving down south in the cold I had the issue again and it's put it back in mind. All a bit of a learning curve I suppose but one that has verily sullied my enjoyment of the car.

Thanks for all the responses. I've held off replying as I've been going round and round in circles (sometimes in the car;) as to what to do. Small update and one thats made me feel rather annoyed. Whilst looking into the differences between UK OEM air intakes and the JDM/Aus/North American 2017 update I've realised from looking at pictures online that I'm missing a branch resonator from the intake boot in between the airbox and the throttle body. It's been blanked off with a plastic cap and a jubilee clip/hose clamp. I've never been satisfied with the throttle response on my car since the first months of ownership in Autumn 2019 but I accepted that was the stock performance so set about doing the manifold/tune to try and improve it. Few thousand pounds later it's still there but only today have I put my hand under there and felt what's missing. I've had the car in storage a few times as its not been my daily driver and I haven't put a great many miles on it. All this time and dissatisfaction with the throttle response. Doh. Miffed kind of describes it. Have spoken to the Toyota dealership that supplied me with the car and waiting to hear back from them. Cheers again for the replies, will be interesting to see the outcome.

Have to agree with everything you wrote but there's still part of me that wants to continue with the GT86. I've calmed on the supercharger a bit as it dawned on me that not only would the extra weight be over the front (which I was thinking I might abide by) but it'd also be right at the top affecting COG. I'm a believer in the flat engine adding to the handling on the GT86 so I couldn't resolve compromising that. 27kg might not be a lot in the grand scheme of things but to have it atop the engine, well, I can see Tada San's argument about not having a turbo due to the intercooler etc. I can imagine they'd have got rinsed for extolling the virtues of the flat-4 low COG but then whacking a bunch more stuff on top. My current quandry is about using my current car as a kind of test mule for invasive mods that I wouldn't want to try on the GR86 only to not get on with them and have to revert to stock. Top of that list is a lightweight flywheel which I'm just itching to try. Engine mounts too. I suppose I shouldn't do anything until I test drive a GR but it could be ages until they get here! Definitely want to have some driving fun come spring & summer. One thing that Tom at Fensport pointed out to me is that with the 2017+ FA20 D-4S you have a fairly mature design whereas there may be some things that need ironing out with the FA24 D-4S after its been out in the wild for a bit. Perhaps the GR86's FA24 will benefit from the 3 years the Ascent's FA24 DIT has been out for but there's gonna be a load of variables still. Tricky decision and my head is saying GR86 but it does feel like a bit of a shame to not scratch some itches with the GT86 rather than letting loose and partially voiding warranty on a brand new car with drivetrain mods and mapping etc

I've seen those two lightweight ones, Dori Dori certainly got excited by the Revolution one. Sadly had gearbox problems in one of the vids I saw. I'm happy with the Tomei manifold for now as it's more punchy with the Fensport tune than the TD EL I had on there before. You're right though it would require drastic work to get it lighter. I only weigh 55-60 kg and could definitely feel a 90kg passenger so to approach taking that off the front would be nice but there's not a great deal to work with is there?

This bodes well for GT86 owners hoping to retrofit GR86 parts. Assuming they'll be freely available to purchase. Specifically I'm interested in the transmission and drivetrain parts. Although, just thinking about it now, if the GR86 is priced at say 30k, rebuilding the trans, replacing the propshaft + buying the parts would easily bite away at a large chunk of the money saved in modding vs just buying the GR86. And surely it'll be more fraught adding those parts with a third party vs having them on the car to begin with.

But would you be willing to pay a monthly subscription for the privilege? Apparently Toyota have retrospectively brought that business model in for post 2018 cars in the US. So imagine you've been enjoying your remote start for getting on 4 years and now they've taken it away and want you to pay for the privilege to use something that perhaps swayed your purchase of the car. Shady if you ask me!

Hello mate, I have a set of the Tuning Developments equal length catless manifold + overpipe. Roughly 6k miles on them, in absolutely fine nick, heat wrap still vgc no rust etc. Car was always stored in a garage. I fancied a bit of rumble so tried some UEL which aren't as good at the top end but swings n roundabouts eh. I'm currently based in London but the manifold is in storage in Burton Upon Trent. I often go back to Shrewsbury so could arrange pickup there with a bit of a heads up. Price wise would let them go for £450 ono Cheers

Interesting that the new BRZ and the GR86 are actually mechanically distinct with regard to suspension/chassis components. Also, according to this page https://motor-fan.jp/mf/article/1462/ the GR86 has a 1.1kg lighter propshaft compared to the GT86. I'd buy that for a dollar !

Actually... If the manual transmission is basically the same as the GT86 but with upgraded/modified parts I wonder if there'd be anything to stop us from getting hold of the relevant parts and rebuilding the gearbox with said parts? I suppose Toyota/Subaru/Aisin might be awkward or straight uncooperative with ordering the upgraded bits. And then there's the cost of a transmission rebuild which I believe is very expensive. Any idea approximately how much that might cost from a reputable place? I was close to getting rid of my 2017 GT86 due to being unhappy with the power delivery until Fensport tuned but still the gearbox disappoints me after trying shifter springs and mount insert from another tuner and now the TRD mount plus aftermarket tranny fluid.

That's the same article as you posted before but I happened to see this https://motor-fan.jp/mf/article/6950/ one at the bottom which touches upon some of the changes as follows (auto-translated): So there has been some modification of the synchomesh! I read an article some time ago that went into the efforts of the engineers to target a 'sporty' feeling shift and how they were satisfied they did a good job which I found curious since so many of us were unpleased. Score +1 for upgrading to the GR86 🙂 Some further mention of the AT changes: Thanks again for the links

Brilliant. This is the post I was after, cheers. In the Ken Gushi video he touches upon the shifter feel mentioning that the linkages have been changed but I'd love to get some more specific details on that. Especially the synchros as they're what I'm led to believe are giving some of us that unsatisfactory 3rd>2nd change. 1st to 2nd is a bit hit and miss for me as well though 2nd>3rd is v slick on mine. Improvements in shifting I think I'd care for even more than engine improvements.

Would've liked to come along to this Will but I've been down South working 👋

Nice one for this Will. Deacon I could've done with your 4.8 final drive on the way back though. Either that or get back in the gym to get more flexibility in my clutching leg. I don't see that listed at Tegiwai or on eBay though 🤔 Was loving the respective cars. Next email to be written will be to Rogue re manifolds methinks.