Pulley and map would get you in the 10s
I'm down to come, but likely just to spectate and do videos for whoever as I won't have done anything to the car by then.
Yeah probably go that direction next year, need to research it a lot, adding a pulley no problem, can even do that on stock map, won't make more peak power as ECU has a boost limit, but it will bring power and torque in sooner and been a supercharger a pulley upgrade gives you more power and torque absolutely everywhere. Some do crank pulleys as another option and the crazy people out there do both together. Rumour is Jaguar tested the engine/SC upto 750-800HP reliable, so it seems its got the legs, but without a map you can only get away with an SC pulley which adds a couple of PSI I believe, probably worth a tenth though.
Mapping the car scares me a little, Jaguar done an outstanding job on the cars map, its such a lovely car to drive, linear throttle (in normal mode) and your in control it and sometimes maps can mass with throttle maps, auto box and take away the nice driving feel, so really need to look into what is available.
As an alternative I can get the Project 8 map which is rated at 600PS, just need to find out how the map makes the extra 25PS, is it via boost limit upped or other tweaks and would it make any difference on my car, of course it guarantees stock drive ability.
A friend was telling me that SVR themselves wrote him a map for his Range Rover when he upgraded the pulley and went from 575HP to 680HP, so that is the option I would like most, of course it invalidates warranty, but I'd rather a Jaguar / SVR map rather than some other tuning companies, as end of the day SVR know the car better than anyone. But was my mate talking out of his backside as I am surprised that SVR themselves did this for him, I've asked him to get me contact details anyway.
Still I am having fun trying to get the stock car as close to tens as possible, my RAM AIR setup has not harmed performance, so now I am going to improve it and tidy it up for my next time at the strip in June, of course hotter weather so even with perfect RAM AIR setup and anything else I can find to tweak in meantime will be hard, I certainly think that a perfect setup car, perfect environment conditions and a little tail wind, the car will run an 11.1s for sure. At which point just a pulley swap may indeed put it into the tens and a map and even high flow cats to go with put it comfortably in the tens.
From my research:
Map only: 620HP
Map + SC Pulley: 650HP
Map + SC Pulley + 200 cel cats: 670-680HP.
You can also do crank + SC pulley for around 700HP and over, but I don't want to go that far as your reaching/passing the superchargers efficiently curves and spinning it a lot faster and thus creating a lot more heat and we all know additional heat is a bad thing, so by doing just SC pulley or just crank pulley, map and cats there will be no additional heat as the higher flow cats reduce temperatures. I just need to decide that when I do it, do I go crank or SC pulley.
I've also seen bigger heat exchangers / intercooler, that is always a mod I like as it helps you maintain peak power, reduces temperatures, a little like high flow cats, those are modifications that increase engine/SC lifespan as they reduce temperatures so from an engineering perspective those are always the kind of mods I prefer when it comes from trying to extract more power.
