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Build your own TCV, save 50%

How to go faster, stop quicker, and turn harder. Chips, exhaust, larger turbos, bigger/slotted/drilled rotors, high performance brake pads, manual boost controllers, performance shocks/struts/springs, airbox mods and more! Also discussion on HID and Xenon lights, aftermarket foglights and other exterior lighting.
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ndphotonl
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Year and Model: S80 2.4T Wasa
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Re: Build your own TCV, save 50%

Post by ndphotonl » Thu Jun 14, 2018 9:18 am

db130 wrote: ↑
Sun Apr 12, 2015 6:50 pm
Are you sure about that? I used the same MAC solenoid back in 2010 for a 98 S70 T5 and I used:

Port 1 - fresh air
Port 2 - wastegate
Port 3 - compressor
Correct, I also used it like this and this is working on my Volvo S80 2.4T (200BHP).


Volvo S80 2.4T Wasa Limited Edition
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precopster
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Re: Build your own TCV, save 50%

Post by precopster » Sat Jan 12, 2019 2:59 am

Had it sitting around for over a year and fitted it today. Why oh why didn't I do it earlier!! Car now redlines quickly and never hesitates.


Current cars:2002 XC70, 2001 V70 T5, 2006 XC90 2.5T, VW Transporter 2.5TDI

www.precisioncarmodules.com.

precopster
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Re: Build your own TCV, save 50%

Post by precopster » Fri Feb 22, 2019 3:08 pm

As another follow up to the installation of the Mac boost valve I have far better cruising fuel consumption. At steady 80kph (50mph) I'm getting between 38 and 42 mpg depending on the gradient. It's still a pig on fuel around town and that's understandable given its weight.

So by all accounts if you're a highway driver this is the ticket and has already paid for itself in the fuel savings. BTW I went for the cheapest one I could find with fittings and fabricated my own connector to match the car loom.


Current cars:2002 XC70, 2001 V70 T5, 2006 XC90 2.5T, VW Transporter 2.5TDI

www.precisioncarmodules.com.

Chuck W
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Re: Build your own TCV, save 50%

Post by Chuck W » Sun Mar 10, 2019 1:33 pm

Anyone have a source for the plug/terminals?

I'm coming up empty on finding the 979153 plug.

I could make my own connector, but that would negate reinstalling the stock type, if needed. (Not too big of a deal, really)



precopster
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Re: Build your own TCV, save 50%

Post by precopster » Sun Mar 10, 2019 4:33 pm

I used a Dremel to cut the connector off the original Pierburg unit then soldered the leads to the exposed terminals. It doesn't look pretty but does the job.


After that I used an epoxy to insulate the terminals so I can go back to a spare Pierburg unit I have if it fails.
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Current cars:2002 XC70, 2001 V70 T5, 2006 XC90 2.5T, VW Transporter 2.5TDI

www.precisioncarmodules.com.

Chuck W
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Re: Build your own TCV, save 50%

Post by Chuck W » Sun Mar 10, 2019 5:18 pm

I guess that's an option, too. I know I have a couple floating around.

I do have this older IPD BCS that came with a motor I just bought, that I could grab the pigtail from, also.
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precopster
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Re: Build your own TCV, save 50%

Post by precopster » Sun Mar 10, 2019 5:31 pm

I've swapped in TCVs where a BCS is fitted to earlier cars. They have the same function electrically and mechanically.


Current cars:2002 XC70, 2001 V70 T5, 2006 XC90 2.5T, VW Transporter 2.5TDI

www.precisioncarmodules.com.

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