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I suppose it depends what you mean by better. I take my car on track so under-bonnet temperatures were more of a concern, and seeing Martin's comments on his thread I felt that there would be a benefit in swapping. I also had the same issue where the TD manifold was tight against the front of the engine. No issues and when I asked Mike at TD about it he said it was normal, but having it out of the way felt like a benefit. I also thought the Rogue looked nicely engineered. I still need to get around to selling my TD manifold too, which should recoup some of the cost. Since it was done at the same time as the SC and some other work the cost was less noticeable.

Harrop supercharger and Rogue Motorsport EL manifold. I previously had the Tuning Developments manifold. Martin on here had his Harrop fitted with his existing TD manifold a few months before me and was concerned the engine bay was getting a bit hot, as the TD manifold loops up into the bay, so he switched to the Rogue manifold around the time I booked in to get the SC fitted. I saw his pictures and got serious manifold envy, so I ended up going the same route.

Ill talk you through when we meet but in summary: 1. You can potentially pass MOT with one Cat but not legally. Different as you know. Mine failed with only second cat on TD manifold. Its not a gaurantee, remember, its likely based on CAT temp and its health. CATS go down with age and usage , so you cannot fully trust this unless you have both CATS. 2. You might need supporting mods but not definitely as each car is different. Some clutches fail at 270 bhp while others hold up till 300. Things that are under consideration should be Clutch, Fuel Pump, Injectors, Tyres (Brake atleast pads and discs) or BBK. So they are nice to do alongside. Some people also want Temp/ Boost gauges etc to ensure they always keep a tab on the vital parameters. 3. With Turbo, as Will pointed out, very few kits remain that can let you have both CATS intact and AFAIK, over a year or two, your CAT will degrade, so it will not hold on long term. It is a bit of a slippery slope in terms of cost unfortunately and you need to be ready for supporting mods sooner or later.

My car is running 290bhp on tuning developments turbo kit. The stock clutch lasted about 5 minutes before it started slipping.

They'll go rusty and it'll be a pain in the arse to change wheels as the adaptor they come with will stick on the nuts

Standard clutch, flywheel, gearbox, engine are all absolutely fine if you stay below 300bhp.

Well technically you not currently legal anyway. 😂

Hello Jay My car passes emissions test legitimately at my Toyota dealership. I have second cat delete pipe, but the OEM exhaust manifold (with primary cat) still in place. I did drive around on the original primacies and alloys for a while, and under most circumstances they were okay, but under hard acceleration from standstill I could easily fishtail with a nasty smell. Since uprating wheels and tyres I have had no traction problems.

As @Church said, if you buy a supercharger and keep the stock exhaust system you should legally pass the emissions test without issue. You can get away with changing the catback and still be legal. It's when you start changing exhaust manifold & front pipe is when you'll have problems. From a legal point the car needs to be as it left the factory or with an OEM spec equivalent part. In the case of our cars, they have two catalytic converters if you remove one of them it's technically no longer compliant and therefore should be an instant fail. Now the grey area is, you could have a decat exhaust manifold but the stock front pipe (vice verse) and then pass the emissions test. This isn't legal as you've still removed a cat, but if the MOT tester can't see the decat and you've passed the emissions, they'll mark it down as a pass anyway. As for turbo kits, the majority don't have catalytic converters fitted to them and I can only think of 4 turbo kits that do an option for a catted version, these are: Works Turbo Kit HKS Turbo kit Blitz turbo kit MPS Engineering

My car has passed an MOT emissions test with a supercharger and just the secondary cat. So if you were to go turbo, that should also pass emissions. The issue with only one cat is getting the secondary cat hot enough, which a turbo/SC will help with. You shouldn't need a new exhaust unless you're going for very high power, at which point you'd be looking at strengthening the engine's internals - you will most likely need forged rods before you need a higher flowing exhaust. In terms of enough grip, Michelin PS4 (I guess that's what you mean) are very good. Someone was actually running SC with the stock Primacy tyres, which seems like madness to me and was probably enough to focus the attention when it's cold and wet. I'm on slightly wider PS4, and there is plenty of grip. The big advantages I've found with PS4 are better wet/cold weather performance, and a more progressive feel when they start losing grip; the feel through them is far better than the Primacy tyres that (to me) always felt like there was a very fine line between on the limit and over the limit. I'd be happy to run SC with stock wheels on PS4.

tpi or rays get recommended, none will look good after 6 months though...