any1 run high and low boost, using Dawes to control the high boost, if so what kind of switch ru using

cheers

 

could use a subaru 3 port solenoid couldnt you??

David

 

working on it,

I've fitted a Dawes Device with 2 x 2port solenoids, one at either end of the Dawes..

This way I have a switch in the car which when switched live it flicks the pipework routing away from the standard route and into the Dawes and thus gives extra boost, and more smiles
In effect it closes the normal route and forces the pressure via the Dawes. When not in th eloop the pressure goes the easiest way...the normal one, by-passing the Dawes.

I have both solenoids hidden within a black box, mounted underneath the plastic black cover next to the Driver side front strutt, where a few relays can be found. I swapped the relays onto the opposite side of their mount leaving a gap to mount the box. The Dawes device sits neatly on top so I can adjust if necessary but it is still covered by the plastic cover. This way you can't actually tell that anything is fitted, unless you follow the pipes coming off the turbo and wastegate.

 

Forgot to say, you can use a 3 port solenoid as David suggests, but you pay a hefty penalty in pounds (sterling).
I bought the solenoids from a company specialising in car gas conversions, for approx £15 each. They also have a manual override switch on them for emergencies. Only problem with them is they need a relay which closes them when power is supplied rather than the normal way round of opening them, but these relays are cheap to buy from Maplins (where I bought the plastic box from).

 

To keep costs down you could look at an alternative to the Dawes.
GBE Manual Boost Controllers Mk 2A in Scooby Shop for £28 to Plus members. Tel 077183 84822.
Also RS Components have a wide range. eg p/no.398-9142=£9.64 or 210-8443=£25.85 rswww.com

 

Silly question... But does the boost control solenoid have a maximum duty cycle? Will it be happy to operate with power to the coil for extended periods of time without any overheating problems? The solenoids are supplied in a system where they are energised on a PWM signal from the ECU.

 

surely this is the same as 100% DC?

Its a case of **** it and see

David

 

can't use the 3 port soleniod as i would get to much of a boost spike and im right on the edge of a fuel cut as it is. I used to run that set up on my cossie for a high / low boost set up and it worked well but got quite a big spike. The Dawes gives me no spike at all so i can run close to a fuel cut no probs.


thanks for ur 2 solenoid set up i have saved the info incase i need it later, i managed to get a switch that should do the job, if not i may give u a shout for more info.

i already have a dawes so want to keep using it as it controls boost well for what it is.

thanks for ur help

Paul

 

If you need a diagram, then email me, and I'll send one to you.

Have to say it's great being able to flick a switch and get the same feeling of your dad pushing you in the back when you were about 10 on your bike!

 

David,

Yup, that would be 100% DC, but I was trying to make it sound less nerdy!

LOL at your proposed solution to the possible problem.

Moray