What are the negative effects of the removal of the rear muffler

[Rover and Dreamer]

From what I can gather the rear muffler needs to be removed in order to fit a long range fuel tank on my Diesel Trialmaster. Firstly are there negative consequences on the engine and its long term performance and secondly what does this do to the warranty as issued by Ineos?

 

[Tenac]

From what I can gather the rear muffler needs to be removed in order to fit a long range fuel tank on my Diesel Trialmaster. Firstly are there negative consequences on the engine and its long term performance and secondly what does this do to the warranty as issued by Ineos?

None at all the CAT is still in place which is connected via sensor to the engine. The long range tank still adds a muffler back its just different than stock. Warranty don't know the laws in South Africa but here in the states they would need to prove that removing the muffler caused the damage to what ever you are warranting out.

 

[Logsplitter]

From what I can gather the rear muffler needs to be removed in order to fit a long range fuel tank on my Diesel Trialmaster. Firstly are there negative consequences on the engine and its long term performance and secondly what does this do to the warranty as issued by Ineos?

I’ve posed this question to an Ineos rep and as @Tenac says it doesn’t affect your warranty as the exhaust is cut after the CAT so not affecting any emissions equipment. I have a petrol Grenadier and will shortly be installing a Long Range Automotive fuel tank from Australia.