Range Rover Down Pipes

vinnylondon · Aug 14, 2019

I'm looking to put a decat down pipes on my L322 4.2 supercharged but having difficulty sourcing them, there is plenty of 4.4's out there, so my question is do the 4.4 down pipes fit the 4.2.

I thank you in advance

wammers · Aug 14, 2019

vinnylondon said:
I'm looking to put a decat down pipes on my L322 4.2 supercharged but having difficulty sourcing them, there is plenty of 4.4's out there, so my question is do the 4.4 down pipes fit the 4.2.

I thank you in advance

That would be illegal.

myfirstl322 · Aug 14, 2019

Don't think the engine would run properly either, you need pre and post cat O2 sensors if using original ecu.

RangeRoller dt · Aug 14, 2019

Why decat? - less restricted exhaust??

If you take it to a specialist like LongLife or someone, they fabricate custom exhausts and can fit road legal high-flow cats and tap your sensors in so it still works. Can email them and they’ll give you a quote.

Wazzajnr · Aug 15, 2019

But why on earth would you want to on a 4.2s/c?
Its not exactly underpowered!

RangeRoller dt · Aug 15, 2019

If it’s ragged it may produce a lot less than new. Depends how well maintained it is superchargers always need rebuilding to produce top power. Maybe he needs an excuse to go see the pretty lady at the petrol station, or a midlife crisis? I should be due for another one of them. Roof rack and tree bars mine will be

Wazzajnr · Aug 16, 2019

It'd have to be pretty well shafted to feel down on power with a starting point of 400bhp or so.
Mines the n/a ajv8 and goes like the clappers.
I used to want an s/c, nor now, I think it'd be borderline dangerous in such a heavy lump.

DanClarke · Aug 16, 2019

With most UK roads speed-restricted and our motorways becoming a set of interconnected "Variable Speed Limit" money grabbing ventures run by UKplc I question the need for any increase in "Oomph".

wammers · Aug 16, 2019

DanClarke said:
With most UK roads speed-restricted and our motorways becoming a set of interconnected "Variable Speed Limit" money grabbing ventures run by UKplc I question the need for any increase in "Oomph".

Needs to be able to spin his wheels on McDonalds car park.

RangeRoller dt · Aug 16, 2019

wammers said:
Needs to be able to spin his wheels on McDonalds car park.

Datatek · Aug 16, 2019

Wazzajnr said:
It'd have to be pretty well shafted to feel down on power with a starting point of 400bhp or so.
Mines the n/a ajv8 and goes like the clappers.
I used to want an s/c, nor now, I think it'd be borderline dangerous in such a heavy lump.

My thoughts exactly.

RangeRoller dt · Aug 16, 2019

Well if it’s down on power to the point it needs decats why are we even talking about it ?

wammers · Aug 16, 2019

There are a few on here who have very strange and totally stupid ideas from time to time.

RangeRoller dt · Aug 16, 2019

I do

... I confess.

But it works!

Think you favourite was me removing the acoustic shielding to help with hotstart, static was a better idea

ukadamwest · Aug 16, 2019

If you want more pull from the SC fit an under pulley.

As mentioned the O2 sensors form part of the EMS so without cats it will default to reduced power yes you can fool the system but you'll have to undo it every year for the MOT.

My 4.2 SC goes like the clappers. Have been considering performance enhancements but my first stop was vented and cross drilled brakes. stopping is more important on a heavy lump with an SC that goes like stink

Range Rover Down Pipes

vinnylondon

Member

wammers

No longer with us, RIP

myfirstl322

Well-Known Member

RangeRoller dt

Well-Sprung Member

Wazzajnr

Well-Known Member

RangeRoller dt

Well-Sprung Member

Wazzajnr

Well-Known Member

DanClarke

Well-Known Member

wammers

No longer with us, RIP

RangeRoller dt

Well-Sprung Member

Datatek

Well-Known Member

RangeRoller dt

Well-Sprung Member

wammers

No longer with us, RIP

RangeRoller dt

Well-Sprung Member

ukadamwest

Well-Known Member

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