daz1968

iTrader: (13)

Is it worth fitting a 3 port boost solenoid on an 03 wrx when having it mapped. Car is running std TD04 with all supporting mods inc. sti intercooler.

Thanks

WhiteWagonMan

iTrader: (34)

yes

dynamix

iTrader: (3)

What does your mapper say Daz ?

daz1968

iTrader: (13)

not got a mapper next, maybe you, depends who offers me best deal after xmas. Have decat uppipe, ppp downpipe and centre decat, de resonated centre section ppp backbox. Spec c intercooler and scoop and undertray. Green panel filter. was just deciding where to go from here. Any help appreciated. Already flashed with ppp map. But need to get it running better as this map I am told is very rich. Will I notice a good increase after custom mapping?

Thanks
Darren

dynamix

iTrader: (3)

A 3 port can help retain some of the boost high up in the rev range and help initial spool up but it isnt 100% essential.

bluenose172

iTrader: (2)

Hardly worth it for the TD04, it tails off at the top end anyway. Won't do any harm if you're planning on going VF later on though.

Scooby Arthur

iTrader: (2)

My WRX was mapped a couple of weeks ago and was fine with the standard item, I have a FMIC and 18G to go on next and my mapper suggested that a boost controller was not needed but recommended the 3 port solenoid.

scoobiewrx555

You should squeeze 17-17.5psi out of a TD04. Any more will just turn it into a toaster!!

Perhaps the 3-port isn't a bad idea. You'll need to adjust the wastegate arm up a bit because i'm pretty certain 80%-90% WGDC won't get you above 15-16psi from std.
Between 1 and 2 turns should do it.

sonic93

iTrader: (16)

why people are talking about 3 ports mine does some tapping noise whats this on my wrx classic

Splitpin

That's the sound of the solenoid switching on and off (i.e. working).

sonic93

iTrader: (16)

lol i new that i was checking u boys knew lol cheers splitpin

Jolly Green Monster

iTrader: (4)

best offer cost wise or end result?
cheaper is not always better

yes should see more at higher rpm and a big gain in torque roughly upto 280bhp and 280lb torque.

Simon

daz1968

iTrader: (13)

If I want to fit one, what is the best one, is it the prodrive one, and where can I get one from.

wayner845

iTrader: (2)

Ive got an old subaru 3 port(as advised by bob rawle) on mine with 400bhp and its got superb boost control.You can get them cheap on ebay.

dynamix

iTrader: (3)

You would have thought that the prodrive is a good one as they are straight plug and play (with the loom adaptor all supplied). However, they don't make them anymore though - now made by pierburg in germany and quite a lot of money. But you may find one second hand.

3 port from a classic works well (i run one on mine still) and can be picked up quite cheap on ebay or on here.

Turbosmart 3 port is good as is the Perrin one.

I tend to have a couple in the kit bag already wired up in case they are needed (as do others I am sure)

scoobiewrx555

Duncan,

That Prodrive 3-port you sold me some time back is still going strong. Works great

dynamix

iTrader: (3)

prodrive have been known to wire them back to front - that one thankfully wasnt

Splitpin

Prodrive never "made" their solenoid, it was always supplied to them by Pierburg and simply distributed in a white box with the wire adapter. The only thing that has changed is that P. have stopped distributing it.

As for not being available, the solenoid is still made and can still be bought from Pierburg distributors. Tactrix are selling them in the States, complete with the loom adapter, and I bought a brand new one here in the summer. I believe I'm correct in thinking that exactly the same solenoid is used in cars from other manufacturers and so may be available off the shelf somewhere, will do some digging.

Jolly Green Monster

iTrader: (4)

Basically any 3port will work well.