I am planning to get a S/C in the next month or so. I read somewhere that by changing the belt of the supercharger with an aftermarket one, it could be achieved 400+ bhp. Does anyone know the name of the company? Diego Paredes Fontanals
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Audi A4 soon a RRS S/C
MV Agusta Brutale F4

It's actually the S/C pulley that is changed, (not the belt). This allows the supercharger to run faster and create more boost. Various companies are working on a package of new pulley, and ECU update, (to increase fuel flow rate, etc.), and potentially new exhausts. Should be easy to get approximately 450 bhp with excellent reliability. Since the S/C engine is the same as the Jag S/C engine, and its been around for a while, the update for the RRS S/C should be easy to do, I'm thinking.
Bish '06 RRS S/C Bonatti Grey/Ebony/Cherry with RSE; PTI; Electronic Rear Diff and Sirius Sat Radio.

paredes_fontanals wrote:

I am planning to get a S/C in the next month or so. I read somewhere that by changing the belt of the supercharger with an aftermarket one, it could be achieved 400+ bhp. Does anyone know the name of the company?

Thanx guys. Sorry but the word pulley wouldn't come to my mind @ the moment, that why I wrote belt.
At least you guys understood me. Diego Paredes Fontanals
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Audi A4 soon a RRS S/C
MV Agusta Brutale F4

thebishman wrote:

It's actually the S/C pulley that is changed, (not the belt). This allows the supercharger to run faster and create more boost. Various companies are working on a package of new pulley, and ECU update, (to increase fuel flow rate, etc.), and potentially new exhausts. Should be easy to get approximately 450 bhp with excellent reliability. Since the S/C engine is the same as the Jag S/C engine, and its been around for a while, the update for the RRS S/C should be easy to do, I'm thinking.
Bish

Bish,

For both the Range Rover Sport and the Range Rover, I have a smaller upper supercharger pulley that will raise the boost another 1.5 lbs by increasing the superchargers RPM. This is worth approximately 20hp.

I also provide supercharger porting, which improves the efficiency of the supercharger. By raising the efficiency of the supercharger, the Intake temperature exiting the supercharger is lowered. The lower Intake temp gives you more power, approximately 35hp. The drawback to this is the work involved on removing the supercharger and the downtime of the Truck. At this time we do not have these available on Exchange basis, so your supercharger is sent out, modified and then returned.

I have recently signed up with SVC out of California. They offer a rear exhaust for the RRS. I believe they rate that system at 15hp, I have not received any more information on that.

In the next 2-3 months I will be coming out with a Supercharger pulley system that will include the upper pulley, a lower supercharger pulley and a smaller idler pulley. I will keep the board updated on my progress.

Problems with dealers are really up to the individual dealer. Some dealers are ignorant on the subject of Modifications and want no part of them. While other dealers will sell you the parts and install them. I would recommend that the customer try and establish a relationship with a knowledgeable person at the dealer.

I do not have a list of installers that covers the US or Europe. Most of my customers install their own parts or source a good technician locally.

Mike

mike-
on your site you list the need for ECU tuning when fitting the underdrive pulley. what exactly does this entail?
how long of a down time is needed for the porting?
i too am in the chi-city, might have to stop by and visit... hehehe

avus wrote:

mike-
on your site you list the need for ECU tuning when fitting the underdrive pulley. what exactly does this entail?
how long of a down time is needed for the porting?
i too am in the chi-city, might have to stop by and visit... hehehe