I tinkered this afternoon in the shed and got the new and unbroken interior plastic bits swapped over and am much happier looking at the thing now, so the remaining small 'to do' list is a bit smaller.
With that done, I wanted to look at TCVs.
There's a fair chunk of information, heresay and misinformation out there to consume about TCVs and Volvo 5cyl engines.
On my previous V70, I'd used a Pumaspeed/MAC TCV to replace the original Volvo Pieburg TCV and had a positive experience with it.
See https://ozvolvo.org/d/2801-2801/637 for reference.
Pumaspeed/AEM/Turbosmart all seem to use the same MAC valve and the most recent/current 'IPD HD TCV' seems to be the same as well.
The other maybe less common upgrade/alternative here is to use the Porsche Pieburg TCV. There's various discussions about advantages, disadvantages, etc, with no tangible detail.
So, to ease curiosity, I bought a new Porsche Pieburg TCV, a new Volvo Pieburg TCV and a MAC-branded MAC TCV/BCS
Today I swapped in a new Porsche Pieburg TCV.
Early observations were positive, seems to hold boost longer and a tiny flat spot I had low in the rpm range appears to have gone.
Of course, I'm currently comparing it to the 25+ yo original TCV.
So, the next task is to swap in a new Volvo Pieburg and then try out the MAC branded MAC TCV (though I'll need to get a Bosch/Volvo connector for it).
For reference, here's all three, in one pic -
MAC on top, Porsche Pieburg TCV (grey) on the lower left, Volvo Pieburg TCV (black) on the lower right.
