Bonnet Exhaust exhaust legalities?

[dr_jekyll]

What is the legalities of a bonnet exit exhaust in the uk?

Ive been looking for a little while online now and can only find guidelines or advice no actual laws against it.

The only factual information ive found on direct gov about exhaust systems is in relation to noise and testing that is almost wording mot'ers descreation. I'll state now mot's wont be a problem..

So what ive managed to find out is:
- noise (always an obv one)
- no protruding parts (burns)
- must be secure

I always thought there was an act stating that exhausts can not exit before any doors. Have i made this up in my head as honestly cant find it stated anywhere but damn sure ive heard of it

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[Eeyore]

i think the issue will be noise and protuding parts i.e. pedestrian safety.

[dr_jekyll]

i think the issue will be noise and protuding parts i.e. pedestrian safety.

Im straight piped anyway so will be just as loud but does drive quietly off boost thanks to the mech vnt. Protruding parts wont be an issue as my thought was to have it flush with the bonnet anyway.

Its just the legality of it exiting before doors. I swear there was a law on it and cant find it

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[Toms306]

It'll fail MOT, you'll be sucking exhaust straight in through the blower intake at the bottom of the windscreen.

Exhaust fumes:

entering cabin - Major
causing a danger to health of persons on board - Dangerous


Like you, I've also read something about the distance it needs to be behind the cabin though. It's not part of MOT so I guess it's buried somewhere in the construction & use regs.

[dr_jekyll]

It'll fail MOT, you'll be sucking exhaust straight in through the blower intake at the bottom of the windscreen.

Exhaust fumes:

entering cabin - Major
causing a danger to health of persons on board - Dangerous


Like you, I've also read something about the distance it needs to be behind the cabin though. It's not part of MOT so I guess it's buried somewhere in the construction & use regs.

Cheers for that dude. Was thinking hooligan exhaust for road use but deffo gonna avoid it now then [emoji23] doesnt help when i keep seeing insane cars with them. Might make something purley for show use instead

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[Eeyore]

is that a full exhaust or is it just the screamer pipe? if its a screamer pipe you may be able to get away with it

[Piggy]

If you think for one second that a pipe straight from turbo out the bonnet will be 'just as loud' as your straight pipe all the way to the rear bumper... Then you must be stone deaf.

[dr_jekyll]

If you think for one second that a pipe straight from turbo out the bonnet will be 'just as loud' as your straight pipe all the way to the rear bumper... Then you must be stone deaf.

I do actually have hearing problems james.. Akward [emoji106][emoji23]

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[Piggy]

No, makes sense why you never listen to anyone's advise...

:-p

#burn

[dr_jekyll]

No, makes sense why you never listen to anyone's advise...

:-p

#burn

No burns here [emoji23]

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[Magenta Sunset]

perhaps a flexi to above the roof line? (Sin City Motors)

[dr_jekyll]

perhaps a flexi to above the roof line? (Sin City Motors)

Back to the issue of protruding hot parts unless you go along the lines of that army 306 and run massive heat shields on every thing

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[Magenta Sunset]

perhaps a flexi to above the roof line? (Sin City Motors)

Back to the issue of protruding hot parts unless you go along the lines of that army 306 and run massive heat shields on every thing

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looked at other forums, and the general consensus is no.

[wainwrightj]

No, makes sense why you never listen to anyone's advise...

:-p

#burn

No burns here [emoji23]

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Not until someone rolls up the front of your bonnet exit exhaust