spikyone

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I did acknowledge that it wasn't entirely fair. The idea of "100k car bills" is only relevant if you're buying it for <£20k, as a leggy 25 year old "bargain supercar". The car I linked has 21st century build quality and only 6k on the clock. You could merrily add another 40 or 50k with little more than routine consumables.
If you're spending £50k on a coupe/sports car, you're going to be financially comfortable, so you can afford to run a relatively new GranTurismo. I did initially mention an Evora as something more directly comparable and that would doubtless be a little cheaper to run. As £50k-ish cars, I would take one of those two (or perhaps a late V8 Vantage) with under 10k on it in preference to anything that you can buy for £50k new because they are far more special and exciting.
At most price points you can't pick up something low mileage and more exciting by going used. At £50k I think you absolutely can. For me, that makes it a valid comparison.

I did acknowledge that it wasn't entirely fair. The idea of "100k car bills" is only relevant if you're buying it for <£20k, as a leggy 25 year old "bargain supercar". The car I linked has 21st century build quality and only 6k on the clock. You could merrily add another 40 or 50k with little more than routine consumables.
If you're spending £50k on a coupe/sports car, you're going to be financially comfortable, so you can afford to run a relatively new GranTurismo. I did initially mention an Evora as something more directly comparable and that would doubtless be a little cheaper to run. As £50k-ish cars, I would take one of those two (or perhaps a late V8 Vantage) with under 10k on it in preference to anything that you can buy for £50k new because they are far more special and exciting.
At most price points you can't pick up something low mileage and more exciting by going used. At £50k I think you absolutely can. For me, that makes it a valid comparison.

Both the car and I are doing some learning.  I think the ECU has settled into a better throttle response and I've learned to be very gentle at low revs.
Together, we're much smooooother now!
Had a chance to give it some welly last night chasing a fast Jaguar.  Very impressive and I could easily keep up with him.

First Impressions
There is torque everywhere, especially noticeable from low revs when in a gear higher than I was used to being in.  It's not the shove that I felt in my old twin-turbo diesel, but then it persists and persists to a glorious full wail at high revs.  The responses are immediate but progressive and controlling it even in the wet doesn't cause surprises.  The supercharger itself is so quiet as to be barely there and, unlike my previous Sprintex, there is just the sound of rushing wind at high revs telling me that induction is being forced. The exhaust note, however, is more liable to be noisy when acceleration is demanded at low revs (this may be especially with the UEL manifold).  Cruising on the motorway is no louder than before.  There is a lack of smoothness just above idle when pootling in traffic - it's a matter of learning the new throttle response which can feel a little on/off at first.  This is where the map feels most different from before.
Overall, the car feels like it wants to go at any opportunity and advanced planning for certain overtakes just isn't required any more.
The installation looks very OEM, you could easily believe that the car came like this from the factory.
Pros
Torque across the rev range
Fast responses
Lovely acceleration note at high revs
Overtaking in 5th brings a smile every time
Feels genuinely rapid now
Cons
The exhaust note can be anti-social when giving it pedal at low revs
Difficult to be smooth in stop/start traffic

This doesn't show all the runs but is the best one to show power and torque (at the wheels).  262whp (=300bhp), 204lb.ft torque (=276nm).
The comparison lines are for a stock car.  No other mods today, just the Harrop supercharger kit.

Same here. Temptations abound

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I've just stopped for a coffee on my way home. The car feels incredibly potent and I'm still getting used to it.

Headline figures: 300bhp flywheel, 262whp. Max torque 275nm but there's torque everywhere. Overtaking urge in 5th is the most impressive thing.

That's all for now, I'll scan the dyno charts when I get a chance. Mark did a superb installation job.

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I had a 1.6 Supercharged C180K Merc. The new models replaced the SC with a turbo and gained a few MPG combined, for the same power output. 
 
Turbos are a bit better for fuel economy than supercharged, its only about 5% based on the Mercs but in todays market where a few hp matters, turbo wins. 
You still get better fuel economy from a 200hp 1.6 supercharged than you do from a 200hp 2.0litre high revving N/A engine.  Partly because the higher revving engine has shorter gearing to make use of the higher revs (to achieve the power). 
My 86 is doing about 3k at 70mph. My 20d BMW is doing half that with it 8speed gearbox. Frictional losses for one are lower with less revs and as been said forced induction improves thermal efficiency of the engine. 
 
Next gen 86 if it does go ahead will have to be turbo or supercharged to keep costs down I would think.
 

I will be gobsmacked if they stick a 2.4 NA lump in it. There will be some that are surprised that the second generation will even exist let alone be fitted with an engine which goes against the entire industry. This new car will have to have something future proof, you might get away with it now but this new gen car will be sold way into the 2020s it's got to have something which will keep the model viable during the biggest change in automotive history. 
Don't forget as of January the new EU fleet wide C02 targets are being phased in. All the manufacturers are facing big penalties for everything over the target. 
 

Another session from Bedford featuring the annoying Jag! 
And a few pictures from the day

I would be in the supercharger camp if it came to it. The H4 layout and the fact you are retrofitting a FI system makes superchargers a nice neat package plonked on top of the engine. The power delivery keeps with how the car was intended too. I've only really felt the need of a charger when on the motorway, which to be fair this car wasn't designed for and is boring anyway.
 
 

Mercedes use superchargers (the Kompressor cars) and I believe the Mini Cooper S uses one.
Is using forced induction necessary?  No, I can make pretty good progress in my tuned NA car.  Is it an emotional desire for more power?  You bet, and it would be silly to claim otherwise.

Apart from being a car enthousiast, I'm a hobby bass player. For my own fun I started a YouTube cover channel. For those who are interested and not afraid of a load of Punk Rock and some Heavy Metal, here's a link to the channel: ThunderBassist.
Below, a link to one of my recent videos...
 

We Interrupt your regularly scheduled programming to bring you this Breaking News     So as a bit of a sudden change of pace I made another big purchase recently for the car.. People often ask me what I plan to do power-wise to make the "Go" as big as the up-coming "show" the car is going to have and I often always give a bit of a half assed answer as I don't want to either give too much away or sound like a bit of a dreamer who gets far too ahead of himself and likely won't follow up on those plans so recently I decided to cement those plans in place and purchased this..    
 
              So I imagine there's going to be a bit of confusion, alot of questions and so on so i'll do my best to explain Just to keep the suspense and confusion building i'll start with my reasons first - I personally really love turbo cars as some of you can likely tell from my Subaru and the Vx220 but If i were to go down the turbo route on the 86 i'd want something a bit more than 300bhp, something like 350-400 and whereas this is very possible it's quite expensive being that you'd most likely need to build the engine with forged internals, buy the turbo unit, get a stand-alone ECU & tune it and then after all of that you're still left with a gearbox that will likely throw up its guts at the thought of all that power and torque. The FA20 is a fantastic engine in reality but I'm not a race team who has the funds to run a high powered boosted FA20 which is then left quite high strung and high maintenance.. which would also require another £3-10k to rebuild if it ever went pop and I kind of wanted to try something with a few more cylinders for once.   So i bought this, it's a v8 obviously and the reason why i started this post with the strange "interuption" notice is just to preface that this will likely not get anywhere near the 86 until Autumn 2020 at the earliest that said, I just wanted to commit to it, get my foot in the door and of course it gives me something to tinker with, clean up, paint & work on over the next year and also these engines are quite rare in the UK so it will easily hold it's value if things all went a bit pear shaped money wise for me for whatever reason next year... i dunno a meteor strike or something?   So to give a few details as to what you're seeing:   This is a 6.2L all aluminium L92 engine previously featured in great hits such as the 2008 Cadillac Escalade and Chevrolet Tahoe. It shares it's architecture with the LS series of engines, specifically the LS3 which often lives in the Corvette C6, Vaxhaull VXR8 (Holden Commodore) and Camaro. The similarity of these engines is so close that the Aluminium block and heads are identical featuring a nice desireable well flowing head with square intake ports and a chunky 6.2L displacement as well as the fact that almost every part for the LS3 or made for the LS3 will bolt straight on without any hassle including Cams, intakes, accesories, the lot.   The reason why the aluminium part is important is because this engine is essentially the exact same weight as an NA Fa20 With both engines being around 170-180kg in weight once fully dressed up meaning that unlike alot of popular 2JZ (230kg) swaps it won't ruin the weight of the car which was one of my biggest fears as I don't want to ruin what is an incredibly well handling car and a fantastic chassis.   So my plans with this over the next year are to of course clean it up, paint the block and heads to tart it up a bit. Swap out the cam to give a bit more power (should expect around 400bhp NA with this) and remove the VVT and Low-end torque focused cam designed for the big heavy trucks and SUV's this engine was previously in and eventually drop it in around this time next year. I'll find a T56 Manual gearbox to go along with it and should be able to easily fit with with some bolt in engine/gearbox mounts from the likes of Sikky Manufacturing and Motec M150 Plug & Play package from Pure Automotive in the states which will retain all factory functions including push-start, Speedometer/Rev Counter and I believe even Cruise control & AC! This was the main reason for picking something as common (In the states atleast) as the LS rather than the more readily available 1UZ/3UZ Lexus engines we have over here as like most things I plan to do pretty much all of the work myself so it has to be something that doesn't really require alot of welding and fabrication or making an entire wiring loom. Of course this all sounds very expensive but from what i've planned for it should work out roughly similar if not actually cheaper than a 2jz swap or High power FA20 turbo build.. plus i get to make v8 noises!   So that's all i can really think of to say so far, this'll be something i'll update slowly over time as I work on the engine and of course the next big posts will likely be the receiving and fitting on my rocket bunny kit.

I'm going to need a re-quote from Adrian Flux when I have the supercharger installed on 8 October.  I've no idea what the uplift will be but I'm paying £499 currently with all NA mods declared.

Means nothing. Rule of thumb, mods don't add value. If you have like for like cover on mods then you're covered anyway so long as you don't write it off. A bit different if you want to go agreed value to cover your investments, but you'll pay for that privilege if they agree it.

It's £4734 inc VAT for just the supercharger at the moment (within the last week).

If the discount code is for 100 % I'm in.

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I was speaking to a trader a couple of weeks ago about a number of things, including supercharging. He then informed me that Cosworth only have 8 supercharger kits left available in the UK. 
When I go FI it'll most likely be the Harrop (there are a number of reasons why I prefer it over the Cosworth), for those that are interested your are looking at just under £6k fully fitted and mapped (including new engine oil) for the Harrop from Abbey. 

This is worth a read for more info on bias:-
https://www.brakes-shop.com/brakepedia/general/brake-bias-and-performance
In 'normal' use (probably 95%+ of the braking people regularly do) you won't really notice any difference in braking. In 'extreme' use (a proper emergency stop, hard use on track, etc) if the bias has been shifted forwards you will see an increase in stopping distance. 
The big thing many people seem to forget is the effect of tyres as they're what really do the braking. If you're running a tyre with poor grip (something like a Toyo T1R for instance) your braking is going to be more limited by the tyres than anything else in your brake system. A grippy tyre (like a Yoko A052 say) will be able to handle much more braking force being applied to it before locking up. A good rule of thumb I saw is that if you can trigger the ABS you're tyre limited not brake limited for stopping. 

You could also use carwow to get a load off the corolla. I managed to get the touring sports with the JBL speakers and Pano roof for near enough £29k

I got the black carbon tips  - i waited a month for them - i could've had red tips off the shelf straight away but I wanted the black.

Not in the UK/Europe, we only got cosmetic changes.
 
@Lussoman 33.2mpg is the new figure based on the WLTP test cycle - the older (NEDC) cycle that gives three figures was not representative of real-world driving and manufacturers were designing their cars to perform well on the test but getting nowhere near the claimed figures on the road.
No idea why Auto Trader have different figures.  Toyota did make some minor tweaks for the MY16 - the last pre-facelift year - to comply with the Euro 6 emissions standard, so I wonder if it was something around that time that could have caused a change.

Not in the UK/Europe, we only got cosmetic changes.
 
@Lussoman 33.2mpg is the new figure based on the WLTP test cycle - the older (NEDC) cycle that gives three figures was not representative of real-world driving and manufacturers were designing their cars to perform well on the test but getting nowhere near the claimed figures on the road.
No idea why Auto Trader have different figures.  Toyota did make some minor tweaks for the MY16 - the last pre-facelift year - to comply with the Euro 6 emissions standard, so I wonder if it was something around that time that could have caused a change.