I recently purchased a 06 jag s-type 4.2l S and I知 trying to increase performance. I知 running at 350hp right now.

 

Welcome to the forums William757,

I've moved your question from Jaguar Forums Feedback & Suggestion Centre to S-Type forum. This is the place to post technical questions about your model.

Graham

 

Frankly I don't believe that. What makes you think so?

Easily the cheapest and best way is sell that car and buy an STR.

Not that you'll want to hear that...

 

Hi WIlliam757,

Welcome to the Jaguar Forums! It's great to have you with us.

Since Jaguar rated the U.S. versions of the normally-aspirated 4.2L V8 at around 290 bhp, what has been done to your car to increase its power output, and how has it been measured?

Cheers,

Don

 

The vehicle was originally purchased at a Jaguar dealership in Hawaii. I have the original car tag with make, model , specs , horsepower etc. it says 350 hp. Haven稚 got it tested yet

 

The vehicle was originally purchased at a Jaguar dealership in Hawaii. I have the original car tag with make, model , specs , horsepower etc. it says 350 hp. Haven稚 got it tested yet

 

It's an error.