can a blow off valve be fitted to a golf mk4

[imotec]

hi there i have a golf mk4 just wondering can a dump valve be fitted if so where and how hope u can help thanks

[Cupramax]

If you mean a vent to atmosphere dump valve then no, 1.8T's are designed to run recirculating valves and all you'll suceed in doing if you do fit one is making it sound daft in the process.

[imotec]

i have got a 1.9 gt tdi managed to fit a boost gauage but thought i could use same pipe what i used to fit the boost gauage for the dump valve

[bertelli_1]

Well the bov and gauge will both take their vacuum signal from the manifold. Why you'd need to use the same hose I don't know. Anyway, the bov recirculates from the intercooler pipework back to the intake trunking (pre turbo). You could fit an aftermarket recirc bov (although in my opinion, if the standard one works, why bother?), you cannot fit one that vents to atmosphere & makes the noise as the missing air will confuse the ecu & cause running problems.

[Greendubber]

If its just vacuum pipe and its the same size then there's no reason why you couldnt use it for something else I suppose.

What do you actually want to know though?

1) Can you fit a blow off valve to your car?, yes but a non recirc one will cause your car to throw up faults.

or

2) Can you use the same pipe you have used for your boost guage?, if it fits then yes.

[imotec]

yes just wanted to no if the pipe i used to fit the boost gauage will work same on a dump valve

[Greendubber]

imotec said:

yes just wanted to no if the pipe i used to fit the boost gauage will work same on a dump valve

Yep, its just vacuum pipe if its the small stuff. As long as it fits it should be OK.

[Slinky]

What dump valve have you purchased?

Just wanted to check that you know how/why dump valves work and confirm that you're fitting it on a diesel engine?

[imotec]

i no a little about dump valves not a lot havent purchased one as yet as im not sure which one to go for i was hopeing u guys could help ha ha yes its being fitted to a diesel yes each to there own i suppose

[Slinky]

imotec said:

i no a little about dump valves not a lot havent purchased one as yet as im not sure which one to go for i was hopeing u guys could help ha ha yes its being fitted to a diesel yes each to there own i suppose

I understand that there are now dump valves that are designed specifically for diesel engines, make sure you buy one of those.. Don't buy a standard dump valve, they will be useless for your application..

[Greendubber]

Unless you have remapped your car just leave it as is IMO. If its running stock boost etc then you really dont need to waste your time.

[Dift]

Greendubber said:

Unless you have remapped your car just leave it as is IMO. If its running stock boost etc then you really dont need to waste your time.

he will be wasting his time wether it's remapped or not. If you want a dv noise, easier to get a remap, straight through exhaust, or cat back (no back box) and a decent filter, even a green panel filter will help.

[Greendubber]

Dift said:

Greendubber said:

Unless you have remapped your car just leave it as is IMO. If its running stock boost etc then you really dont need to waste your time.

he will be wasting his time wether it's remapped or not. If you want a dv noise, easier to get a remap, straight through exhaust, or cat back (no back box) and a decent filter, even a green panel filter will help.

Unless, like the 1.8T the derv motor requires a recircing DV.

My 1.8T's mapped, green panel filter, forge TIP, 3" stainless exhaust and a Forge 007 DV,...you can hardly hear it (which suits me).

[Slinky]

Remembering, of course, that a diesel engine doesn't have a throttle butterfly and therefore no "real" need for a DV...

[Ranger 6]

imotec said:

....yes its being fitted to a diesel yes each to there own i suppose

£00s for a whoosh noise - personally I think you're mad. You do know the diesel dumpnoise valves cost about 4x that for a petrol don't you?

Spend your money on something which will make the car handle/stop better or go faster.

[imotec]

yea the remap sounds good