Dump valve

**Dan H** · Tuesday 9th April 2013, 11:16

Hi guys, I've just received my dump valve that I bought an was wondering what pipe I connect to the top of the dump valve? I'm going to be putting the dumpvalve in the pipe from intercooler to TB

ALSO, I'll be fitting my boost gauge later, what hose do I split to put my t-piece in?

Thanks

**T5frankie** · Tuesday 9th April 2013, 11:27

its not as straight forward as that, you first need to replace the original recirculation valve with a blanking plate, the pipe that goes to the re-circ valve now goes to the top of the dump valve

**M-R-P** · Tuesday 9th April 2013, 11:29

Originally Posted by T5frankie

its not as straight forward as that, you first need to replace the original recirculation valve with a blanking plate, the pipe that goes to the re-circ valve now goes to the top of the dump valve

....And you split that pipe for the gauge

**T5frankie** · Tuesday 9th April 2013, 11:38

Originally Posted by M-R-P

....And you split that pipe for the gauge

no you dont you just use the vac tree

**M-R-P** · Tuesday 9th April 2013, 11:43

The option's there to do either.

Besides, we don't know if it's Me7 or not - No vac tree on the ME7.

**Wobbly Dave** · Tuesday 9th April 2013, 11:47

ME7 will have a caniption fit if you try to dump to air. Perhaps a little harsh but the stall rate will go up considerably & your idle will be irratic to say the least.

**danny-R** · Tuesday 9th April 2013, 11:48

It's pre me7 so will have a vac tree. Not sure about the blanking plate as its a lpt

**M-R-P** · Tuesday 9th April 2013, 11:50

Originally Posted by Wobbly Dave

ME7 will have a caniption fit if you try to dump to air. Perhaps a little harsh but the stall rate will go up considerably & your idle will be irratic to say the least.

A what?

How would dumping to air affect idle Dave? the spring would be holding the valve closed?

**Wobbly Dave** · Tuesday 9th April 2013, 11:55

Originally Posted by M-R-P

A what?

How would dumping to air affect idle Dave? the spring would be holding the valve closed?

MAF sensor & ECU are a lot more accurate & the relationship is much tighter. It doesn't like loosing a whole bunch of metered air into the engine bay.

I have a GTX3071 turbo strapped to the back of mine, and as you might know - it has no recirc valve. So I run a TIAL QR BOV, but before I got the final pipe work sorted - I know exactly what happens when you run ME7 with a dump valve to air. On a closed throttle RPM will dip to 500 & sometimes it might pick up again, but a lot of the time you will be using the ignition key - which is quite embarrassing.

**p fandango** · Tuesday 9th April 2013, 11:56

Originally Posted by danny-R

It's pre me7 so will have a vac tree. Not sure about the blanking plate as its a lpt

it'll still be a turbo from the Mitsubishi TD04 range so will have a recirc valve built onto it

**Wobbly Dave** · Tuesday 9th April 2013, 12:00

Problem solved - you already have a dump valve - so you don't need to waste money installing another one (that will almost invariably leak & cause rough running issues).

IF IT AIN'T BROKE DON'T FIX IT.

**p fandango** · Tuesday 9th April 2013, 12:02

Originally Posted by Wobbly Dave

MAF sensor & ECU are a lot more accurate & the relationship is much tighter. It doesn't like loosing a whole bunch of metered air into the engine bay.

so if running a standard recirc, & a cone filter the hiss/pssh whatever you hear when you back off the throttle isn't stalled air exiting the air filter the wrong way? Otherwise it'd have the idle issues as well, inless the MAF is measuring the air traveling in both directions lol

**danny-R** · Tuesday 9th April 2013, 12:13

Originally Posted by p fandango

it'll still be a turbo from the Mitsubishi TD04 range so will have a recirc valve built onto it

Thanks fir clearing that up. So Dan before you fit your dv get a forge blanking plate and fit that first. I loved the sound of that alone and never fitted the DV to my t5r

**T5frankie** · Tuesday 9th April 2013, 12:14

Originally Posted by danny-R

Thanks fir clearing that up. So Dan before you fit your dv get a forge blanking plate and fit that first. I loved the sound of that alone and never fitted the DV to my t5r

thats how the s70 is running and its loud lol