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TCV Upgrade on a 95" 850 T5 wagon

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OBLIVIOUS
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Joined: Sat Jun 29, 2019 8:43 am
Year and Model: 95" 855
Location: Oeiras

TCV Upgrade on a 95" 850 T5 wagon

Post by OBLIVIOUS »

Hello,

Does anyone know a good alternative to the stock TCV for a 95 850 t5?

I'm currently running a tune that turns up the boost to 1 to 1.2 bar and I've noticed that lately the boost levels have been uneven, and I'm sure that the stock TCV has had enough of it.

I've considered getting IPD's HD TCV but, it's very expensive, and I've read that it's not as good as IPD sets it out to be, so my opinion on that is currently a bit wobbly.

I could always get another stock TCV but, I don't want to buy one that'll just break again.

So, what other options do I have?

Thanks!
tardcart
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Joined: Fri Feb 08, 2019 4:17 pm
Year and Model: 96 850t. 93 940t
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Re: TCV Upgrade on a 95" 850 T5 wagon

Post by tardcart »

over at the performance tuning forum there is a diy for the same ipd unit for 25 bucks. Just doesn't have the sticker. but I haven't used it.
dont over look your compressor bypass diaphragm and heavy duty spring. Ipd has that.
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ndphotonl
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Re: TCV Upgrade on a 95" 850 T5 wagon

Post by ndphotonl »

I would recommended the Pierburg "HD" unit which is used on Porsches/Rovers. I build the IPD unit, but I wasn't impressed to be honest.

Pierburg TCV 7.22908.03.0

ImageVolvo S80 2.4T Pierburg TCV 7.22908.03.0 by Andy Ramdin, on Flickr

ImageVolvo S80 2.4T Pierburg TCV 7.22908.03.0 by Andy Ramdin, on Flickr

ImageVolvo S80 2.4T Pierburg TCV 7.22908.03.0 by Andy Ramdin, on Flickr
Volvo S80 2.4T Wasa Limited Edition
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vlr7
Posts: 7
Joined: Fri Sep 20, 2013 2:36 am
Year and Model: 850T-5R, V70-s
Location: Estonia

Re: TCV Upgrade on a 95" 850 T5 wagon

Post by vlr7 »

ndphotonl wrote: Sun Aug 18, 2019 11:12 am I would recommended the Pierburg "HD" unit which is used on Porsches/Rovers. I build the IPD unit, but I wasn't impressed to be honest.

Pierburg TCV 7.22908.03.0
Is there really some internal difference?
I can see its half the price of original black Pierburg unit found on these cars ~15€ gray vs ~35€ black (7.22240.13.0)

Nevertheless i ordered one, and will let you know if it works better. Nice to have Porsche 911GT2 piece on your Volvo :P
vlr7
Posts: 7
Joined: Fri Sep 20, 2013 2:36 am
Year and Model: 850T-5R, V70-s
Location: Estonia

Re: TCV Upgrade on a 95" 850 T5 wagon

Post by vlr7 »

Ok its in place now and i actually see some minor improvement in boost pressure @spool, but it cant hold it till redline (1,2-1,3bar), so it has to be the wastegate actuator.
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ndphotonl
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Re: TCV Upgrade on a 95" 850 T5 wagon

Post by ndphotonl »

A worn old wastegate actuator was the missing link when I optimized my S80 as well. After adding a boost gauge, I found out I was driving on wastegate pressure instead of "normal boost pressure". After replacing it with this Mambatek actuator (I have a 13T turbo), problem solved!

ImageVolvo S80 2.4T New Mambatek Turbo Wastegate Actuator by Andy Ramdin, on Flickr

ImageVolvo S80 2.4T New Mambatek Turbo Wastegate Actuator by Andy Ramdin, on Flickr

ImageVolvo S80 2.4T New Mambatek Turbo Wastegate Actuator by Andy Ramdin, on Flickr

ImageVolvo S80 2.4T New Mambatek Turbo Wastegate Actuator by Andy Ramdin, on Flickr
Volvo S80 2.4T Wasa Limited Edition
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