fpr vacume pipe

s3welshy

Registered User
hi all i did the n249 removal yesterday. as i was doing it i noticed the vacume pipe to the fpr was snapped. i replaced it.
what would this do to the car?

thanks.
 

<tuffty/>

Badger 5 Edition...Its all about the flow...
Staff member
Moderator
Fuelling would potentially go lean under boost... not a good place to be... these FPR's are rising rate regulators... 3bar plus boost in this case... lack of fuel pressure under boost will mean fuelling can't keep up and go lean which melts engines... literally

<tuffty/>
 

<tuffty/>

Badger 5 Edition...Its all about the flow...
Staff member
Moderator
Can the vacuume pipe be replaced with 4mm id silicone hose ?

Think I have used 3mm ID for the FPR... just measure the ID of the OE pipe to be sure, I don't have my car handy to check...

<tuffty/>
 

<tuffty/>

Badger 5 Edition...Its all about the flow...
Staff member
Moderator
sound thanks mate,so would 3mm Id do all vac stuff? Like under manifold and that ?

I would use 4mm for the DV and boost gauge (if you have one).... you can get away with 4mm I think on the fpr but from memory its a loose (ish) fit on the fpr... secure the hose with small cable ties rather than clips

<tuffty/>
 
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