MartinT

Yes, exactly that. I appreciated it even more today on my work commute, the engine sounds really good and smooth while the 'charger does its stuff when needed. Definitely worth the investment and my head thanks you for the advice!

Things I can hear without being overwhelmed by exhaust roar: the sweet spinning of that lovely smooth engine; the intake whoosh/hiss as the supercharger develops boost; the different road surfaces; the slight chirp as I test rear wheel grip on acceleration.

Thanks, Paul!

The job's done and I had a wonderful drive home as if in a different car. It is astonishingly quiet, so much so that I can hear the mechanical sounds of the engine spinning rather than just exhaust roar. The combination of low noise and swift acceleration gives the impression that the car is even faster. Perhaps it is, knowing that there is no exhaust restriction at all. Ian at H&S explained to me that both the centre silencer and the two back boxes are stuffed but feature a straight-through design, so there is probably less impediment to gas flow. The two Helmholz resonators are empty, as they should be. External noise at idle is the same as stock but you get a nice subdued tone at revs. Without knowing whose exhaust came off, he did say the back box is a bad design and the overall workmanship with all the welds (and the cracking) pretty poor. I decided not to try selling it to a poor unsuspecting buyer so I had Ian scrap it.

My H&S exhaust is now ready and will be installed on Friday 11 November. I'm looking forward to the drive home, but possibly not the 2h drive there in the morning!

Bonnet sensor switch. Bend the bracket up a bit. Sent from my Oppo X3 using Tapatalk

Just get the rods changed, LOL! No, just looking for a touch more pickup in the midrange. It's good already, but a little more especially on a hot day would be nice.

I've ordered a Mishimoto 76°C thermostat for Abbey to fit on my next service.

Sorry, strictly speaking, iAT is the air temperature into the engine. It runs at +15 to +20C above ambient temperature. My Scangauge lets me monitor it. Today, iAT was running at 31C or +14C above ambient of 17C. @Luke is there a performance benefit to running the engine with such a cool thermostat?

Yes, the Harrop runs the stock thermostat. Sent from my Oppo X3 using Tapatalk

Do you really mean coolant or intercooler coolant? Coolant should always run between 88C and 90C on a hot day. Mine never strays from that. Intercooler coolant in mine runs at +15 to +20C above iAT. It won't freeze in our winters with antifreeze in it. Sent from my Oppo X3 using Tapatalk

Some more observations on the Goodyear F1 Asymmetric 6. Dry grip is very good and wet grip seems pretty good so far. Handling is quite sharp compared with the Michelin PS4, but the PS4 feels absolutely planted in a way that the F1 A6 doesn't quite manage. The supercharger is always a test of holding traction (and my driving skills) and I'm having to slightly re-learn when to give it pedal coming out of a corner if it isnt to feel skittish. I would say that there are mostly differences between the two rather than either one being a clear winner. However, I might give it to Michelin for that planted rock stable feel when pushing it. How the new PS5 fares against these two remains unknown.

White BRZ - join the (rare) club!

Thanks, @Luke I will indeed have H&S install it, I shall take a day off and let them do the fitting and snagging. Ian has been most helpful so far!

I hope the welds hold fast for you. Sent from my Oppo X3 using Tapatalk