A step by step instruction video on how to remove and replace all Jaguar and Range Rover 5 Liter and 3 Liter Supercharger Pulleys.


Contact us for further details.

 

Out of technical interest, could you describe the benefit of fitting a smaller pulley given that the ECU limits the boost?

Surely just a remap that held on to the boost and fuelled the engine to match would be more reliable as well as much quicker to install/reverse.

 

The ECU controls engine and transmission side of the supercharged engine system. But ultimately the drive ratio for the supercharger is set by the relative size of the pulley wheels....that can't be changed by the ECU.

The easiest way to change the supercharger blower drive ratio is to reduce the size of the blower pulley wheel, so that it spins faster per engine RPM, forcing more air into the engine, allowing for different air compression and fuel mixes (which are controlled by the ECU engine-side....so the pulley change needs to be accompanied by an ECU remap).
Note that the engine is actually doing the work of spinning the blower (via the pulley system), so you are giving up quite a bit of fuel efficiency by increasing the supercharger drive ratio.

 

Nice video and really shows how simple a pulley swap can be however I wonder if pulling the pulley off without first heating it to expand actually scores or damages the supercharger shaft in any way.

Comments?

Walt

 

what hp are you getting from doing the pulley and a map out of interest, oh and how much do you charge?

 

To put it simply, the only way of increasing boost is by changing the pulley. We have been using and recommending a 1.5lb pulley since 2009 and have never had an issue. This makes plenty of power with the ECU tune/pulley.

 

We do so many of these engines on a daily basis (4-5 engines everyday Monday to Friday across the country) we had to make a puller which is engineered well, easy to use and quick. These puller's were made solely for 5.0 supercharged engine. Removing the pulley with this puller does not damage the shaft at all.

 

Final number is 618hp. Check the link below for the price list.

Price List | ECU Tuning Group

 

Numbers/dyno chart for the V8 S Vert pls?

 

Good info. thanks for the post.
My main concerns are:
1). I have a F type R coupe which as you know has only been available recently, so my first concern is that something happens to the drive train, and Jaguar voids my warranty. I believe if they scanned the engine they would figure out that a 'tune' was performed, even if they didn't notice the smaller pulley.
2). The second is that the 'tune' reverts back to the original settings. I believe I've read somewhere that this can happen... not sure if its the car reverting back to original settings or it would be caused by the dealer performing a tune up or reflash of the ECU do to a factory update.?
Thanks.
Lawrence.

 

This dyno sheet shows wheel hp. The result for Jaguar F-Type was 618hp to the engine

 

90% of our work are done for dealerships. We have been tuning the 5.0 Supercharged engine since 2009. We never had a customer that had any problems with their warranty. Also, our software itself is undetectable and doesn't make the car go back to stock by it self.

 

Please list some of the dealers in Ca that you do the pulley and tunes for a point of contact their phone number. I would like to check with them about any issues.

Thanks,

Walt

 

That is not true. IDS will show a non factory tune as well as when & what mileage it was installed. I have seen it quite a few times.

 

Give us a call and we can discuss references.

Regards,

ETG

 

Again, we have been programming these engines since 2009. We do 4-5 engines everyday Monday to Friday across the country. We have never been notified by our customers that their tune has been detected.

If any of our customers tune have been detected. They are more than welcome to post their invoice number here.

 

So, a bit confusing, ETG says its not detectable, but we have a member that has actual experience that it is. ?
Lawrence,

 

I'm guessing you do not want to identify any of the Jaguar dealerships openly on this forum that you do over 90% of your work for so please just PM me the top 5 dealerships and your point of contact for each. I'd like to talk with them directly regarding your pulley install and tune to get their impressions as well as any issues they have had. I promise not republish that information.

Simple request.

Thanks,

Walt


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Give us a call and we can discuss references.

Regards,

ETG

 

We can only comment on OUR tuning and OUR customers. If any of our customers had any issues they are more than welcome to post their experience and invoice number here.

We do so many of these cars a week. Since 2009, we have not once heard from any of our customers that our tune has been detected.

For us this discussion is closed until someone posts an invoice number.

 

so 538hp is the max for my vert?