Ok I've done a bit of research (using the search facility) but can't find a definitive answer...

Which pipe is best to 'tap' in to for a boost gauge.

I don't want to use one that is going to cause me other problems.

A guide would be great if anyone has one?

Thanks.

Most people(me included) run a pipe from the fuel pressure regulator. Good luck

Personally I never tee into either the FPR because if that leaks you risk the engine. I'd go into the vac line going to the carbon cannister

Really? Risk it how?

Genuine question, that's where mine is.

It controls fuel pressure and fuel is used to cool the cylinder. The FPR uses the vac/boost line to increase the pressure with the boost so if it breaks you risk running lean and running too lean melts things. The crappy boost gauges usually come with a terribe plastic tee and the cheapest hose you could possibly buy.

I'm not saying your engine is going to explode the second the line breaks or is removed but it's a risk that's not needed given the number of vac connections on the engine

Interesting stuff, the carbon canister I presume gives a good accurate reading for a gauge? Might change mine over in the summer

It comes from the inlet just the same as the fpr so yeah it'll give the same reading

Personally I never tee into either the FPR because if that leaks you risk the engine. I'd go into the vac line going to the carbon cannister

So is the vac line to the carbon can the one in the pic that rob has put up??

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If they all come from the inlet,having a hole in any of the pipes would effect the fpr so you not really gaining anything are you?

If they all come from the inlet,having a hole in any of the pipes would effect the fpr so you not really gaining anything are you?

I'm glad someone said that because I was thinking the same thing but didn't want to appear stupid!

Would that really be the case or would the effect be less dramatic to the fuelling if the line is taken from the carbon can?

They all some from the inlet but having a leak the 4mm line going to the fpr is going to have a much bigger effect of your fuel pressure than a leak on something else. Basically a leak directly on the fpr hose will completely stop it from working but a leak elsewhere wont.

And no that pic is of the fpr line

Id take it from here personally but there are lots of other places that don't involve the fpr