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.

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?