daytrader0

For my P-car VF SC is about 10K+labor. If SC for 545i is only 5K I'm also in for group buy. 50% less than SC for P-car that's a excellent deal. Consider the potential in subtantial HP gain for 5K. With all the upgrades this side of SC can climb up to 5K easily. I wish VF can lower their price on P-car so I can switch over to SC.

Gents, keep in mind that with SC upgrade you still need performance exhaust, chip tuning, brake/suspension upgrade to handle the xtra HP.

EuroCarFan

I'd be in for the group buy too if it was $5K but come on guys....do you think that's realistic considering the kit for the 645 is priced at $9K???

AlexFW

I think it would be over $5k ... Perhaps ?5k .

Somebody send a mail and ask what would be the price for 5-10 kits .
And how many HP does the kit .
(around 500, ok, but 480 or 530 ?)

AlexFW

Why exhaust ?
Imho only a new remap and M5 front brakes .
Suspensions .. The DDC, dynamic drive control, imho is enough .

BetterMakeWay

You will need a better exhaust flow after such a big mod on the engine. Because the supercharger pumps in more air that means more fuel will be burnt, and that means more gases, more gases need a biger volume of exhaust pipes. It's quite simple actually. Those things are studied and stock exhaust is designed specially for the standard volume of extake. Backpressure is the key element when studying an exhaust. If there is too much backpressure then there is more strain on the engine and power is lost, if there is too little then gases will not get out so quickly and instead they will build up in the exhaust and again stealing power from the engine and putting stress on it. I've seen not once, naive people that bought a completley new exhaust without knowing the application or data about it and without moding anything else on the car and when they dynoed it, the engine delivered less power. One could risk power loss by keeping the more restricitve standard exhaust, or even damage by the abnormal backpressure on the engine.

Upgrading only the front brakes is a wrong move if you ask me. Front and rear brakes work in tandem upon heavy braking and dsc/dtc aswell. Upgrading just the front may unballance the car, and the car WILL get more understeer while braking and turning in. At this level of power increase, upgrading the brakes is a must because it's useless not to mention dangerous to add this much power without improving the stopping power.

Suspension well probably here things remain a bit more relaxed, unless you track your car often, when coilovers+improved sway bars+struts are a must. Dynamic drive has a limit and unlike some people think it doesn't help cornering beyond the suspension ability. It will not do wonders and nor it will be as responsive as a tweaked suspension. I really don't know how much handling will be affected by adding this much power to the wheels, but in a way i don't wana find out , some ugly $hit can happen.

AlexFW

Better, do you think it would be possible to utilize all the 500-550 HP ?
As you speak, it seems you have to do a challenge, on the road .

Now I run highways at 145 kmh .. And I would continue to the same speed also with the kompressor .

andy545

I must say I agree with the above. All that extra horsepower begs some improvement on the brakes and chassis stability. Come to think of it though, a lot of members have gone for pretty hefty chip tuning on their 530D let alone the 535D - what's their conclusion - have they noticed a need for uprated brakes or chassis improvement ?

daytrader0

Well done BetterMakeWay! I couldn't say it better. It's all common sense.

daytrader0

Chip tuning, intake upgrade, free flow exhaust, these do not improve much in HP term. With the standard set up with OEM there is no need to get BIGGER brake or expensive suspension mode.

When you are talking big HP gains with SC then it's totally different ball game here. For sample, my P-car is a non Turbo with 325 HP the Porsche tech. had done there job to get the max out of the car. But if I put in a SC or Turbo system in my P-car the HP gains is subtantial higher @ 450-490 HP with that in mind my non Turbo can smoke Porsche Turbo 996. So the P-turbo provides bigger brakes, stiffer suspension to compensate the Xtra power.

BetterMakeWay

PS: Be sure not to pass 2000rpms...
J/K why on earth would you bother at all then!?