Rick DeMan

Hi Chris,

The factory Cup pump uses just the connections you mentioned. Power, ground and terminal 61 ...that is from the alternater so it knows when the engine is running and turns on the pump. The only place to get the pump with those connections is thru PMNA. I searched for quite a while and found (what looked like) the exact pump from a rebuilder in England. Very reasonably priced including the shipping. Original fitment on the 03 Volks Polo, But when it got here it had 20 or so electrical connections.....it was used in variable assist modes for different speeds and parking. I could not make it work just straight like the Cup pump...

Is that the ones you were refering to Chris??

brucegre

I've got the MR2 pump on the Cup car, we just run it off a circuit breaker. If I forget to turn it on, well, it only takes one corner and I'm flicking the breaker. It's a good solution and bullet proof.

Bruce

bruinbro

I visited Arlan Motorsports on Monday and had a nice chat with Dave and Ray re the electric pump. they confirmed it was a PMNA part and thought that at most I would have to add a relay, but no ECU connection is necessary. I'm going ahead with this conversion and I'll document it with pics.

Bro

bruinbro

Found out that the kit, which includes hoses, fittings, wiring, connectors and pump is ~$2k.

Bro

Kurt R

I know a few years ago guys that were running VW Golfs in pro rally were using the pump from a Subaru XT. They probably ran it all the time though. If you drive your Boxster on the street you'd maybe want to only have the pump run when you are turning the steering wheel.

Geoffrey

What you need to develop is a PWM controller to contrl a simple 12v pump like the PMNA one. The PWM controller would take input from wheel speed and steering angle and provide output to the pump with varying voltage from 2-12v based on the requirement. The inputs can come from a varitey of sources including a MoTeC or AIM dash unit.

schvetkaaks

Wow, this stuff is way too expensive for me. I'm going to get some Pyrotech heat shielding today (sleeve and tape) and see if that helps. I'm sure it's not as good as a whole new line re-route and cooling system, but might be enough to keep me from having to replace my power steering every time I go to the track in the summer.

Glen

The line reroute and cooler option should only set You back a few hundred and You can DIY, FYI.

schvetkaaks

The pyrotape will set me back about $20, and if it works, great, as then I don't have to explain anything to my service department when I go back for warranty work on the car and have a re-routed power steering line, as whatever warranty work I would need done after that would be voided because I re-routed it.

Glen

Hmmm the pyrotape will not prevent the plastic PS fittings on the motor from melting. The PS cooler should not void the wty, in fact why not have the dealership, or a dealership do the work. They can get the PN's etc...from Boardwalk Porsche who has donethe mod before....

Glen

Oh yes, now would be a good time to mention that when the plastic fittings fail the Boxster regularly pukes fluid all over the top of the engine resulting in a nasty fire...kind of a bummer if You dont have a extinguisher handy or a quick corner crew.

JW in Texas

Oh Glen, what do you know!

This reminds me of a saying. Can't put my finger on it. Something involving a horse & water

bruinbro

Don't forget that the Pentosin fluid is supposed to be really bad on other hoses.

Bro

amondc

Bro,

Here is the porsche parts list used on the cup cars.

Power steering

• GT3 Cup cars can run either the stock engine driven power steering pump or an electric power steering pump. PMNA offers the following conversion kit from a GT3 RS.

o 1 996 106 915 9A Engine conversion kit
o 1 996 314 915 9A Power Steering kit
o 1 996 314 015 9B Power Steering Pump

bruinbro

Thanks!

Bro