Hi i was just wondering has anyone de cated there p38 4.6, as i am thinking of doing it, and have you noticed ant differance.

You dont say if you are intending to use this on the road, if you are it will not pass the mot test, and as it uses oxygen sensors in the exhausts the ecu will throw a wobbly.

i thought if you are running on lpg you can decat your car and still pass the MOT,

Not sure about the ECU though

hi metropolis2 , i have a 1996 4.6 autobiography and a 2000 4.6 30th aniversary edition both running on lpg which i de-cated both , the cats are replaced buy a decat pipe which i bought from je engineering. [ dont think they have any left now but seen other companies selling them ]
these are a direct replacement for the cats they come with the holes in to screw your oxy sensors into
next fitted a janspeed s/s full system to each r/r with twin tail pipes
benifits are 30% LOUDER, SOUNDS GREAT- NOTICEABLE IMPROVEMENT ON MPG - MORE RESPONSIVE PULLS HARDER- ENGINE RUNS COOLER
BAD BITS ARE DECAT PIPE £250 JANSPEED SYSTEM £350
YOU DONT HAVE TO CHANGE THE EXHAUST SYSTEM YOU CAN JUST GET RID OF THE CATS
HAD NO PROBS WITH OXY SENSORS AS THESE WERE FITTED BEFORE THE CATS ANYWAY
IT ALLOWS THE V8 TO SOUND HOW IT SHOULD GO FOR IT

Hi klf 400 i will have to look in to this and give it a go , my rr also runs on lpg and as the fella said at the mot place if it comes in running on lpg thats what he tests it on, thanks metropolis 2 {Don}

metropolis2 said:

Hi klf 400 i will have to look in to this and give it a go , my rr also runs on lpg and as the fella said at the mot place if it comes in running on lpg thats what he tests it on, thanks metropolis 2 {Don}

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yes thats correct, when my rangies go for mot they bypass the emisions test alltogether