Hi My Jag has two single exhaust off the back box, one either side. Looking for the cheapest way to improve the sound, the car is to quiet when you put your foot down !. Can you remove the back box and put the pipes straight through ? or replace the back box? Any ideas out there

 

You can remove the centre pipe resonator and replace it with an 'X' pipe similar to the supercharged cars, or try some of the aftermarket exhaust systems.

https://www.paramount-performance.co...t-system..html

XK 4.2 NA Stage 1 exhaust ? Spires

If you just remove the rear silencer, the car will be too loud and may be an MoT failure point.

 

Welcome to the forum chris52,

I've moved your question from UK & Eire Region to XK/XKR forum. this is the place to post technical questions about your model.

Please follow this link New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum to the New Member Area - Intro a MUST forum and post some information about yourself and your vehicle for all members to see. In return you'll get a proper welcome and some useful advice about posting to the forum.

Graham

 

I'm not sure what UK regulations govern mufflers. However, since most aftermarket mufflers that are swap in for the XK are in the UK they probably meet those regulations.

I'll throw in one muffler maker not yet mentioned. The twin pipe XKR under bumper body panel needed for twin pipes is not that expensive.

Upgrades New XK & XKR

 

X in the mid pipe will quiet the tone. 200 cell per inch sport cats will make it louder.

 

Thanks . Will have a good look round to see what's available.

 

BLxxdy hell £ 2500 for new catalysts, think I will just "drive the dam car". Thanks for the info, will decide what I want to do

 

I did the X-pipe which is nice but I think this is my next step

 

Trust me, straight pipes do not sound good. Just pop your rear box off and take it for a spin if you don't believe me.