The Recital of Piyutim In A Non-MA Minyon

May one recite piyutim in a non MA minyon on Shabbosous when piyutim are recited?

If one may do so, and one does not have a text of piyutim available, should one still say the extra pesukim "Ouhr Oulom", "V'Chayous y'shourayru" and the shorter "Emes V'yatziv"?

Rallis

I go to an Ashkenazi Shul in Israel, that does not say the piyutim on the special Shabbasos or Festivals. Do I still say them, as my grandfather was from Germany? Also, if I do not say them, can one still say the extra pesukim "Ouhr Oulom", "V'Chayous y'shourayru" and the shorter "Emes V'yatziv"?

GBaum

Even though it is brought down not to say them b'yochid, I think minhag Ashkenaz would be different (and if I'm wrong, I have R' Wosner to rely on for myself). Here's why:

The only reason I ever saw brought down for why a yochid shouldn't say it is in Rabbi Akiva Eiger, who says that this is because we are besofeik whether to follow the ruling of the Maharam Mintz, who was against piyutim in the middle of brochous (ideally), or not. The minhog of the Kehillo therefore should not change, but b'yochid one should not enter a sofeik.

The difference here is that in Germany, it was accepted as vaday that piyutim are allowed (Rav Hirsch is very adamant about this in a tshuvo, claiming that only 3 rishonim were against it - (I found four)). Therefore, the ruling should not be relevant to those that follow minhogei Ashkenaz.

I was also told by my Rov (who is not a Yekke, and I don't daven in a Yekkische minyon) that I can say piyutim in a non-MA minyon, as long as I do so quietly.

I may very well have missed something, and if I did, please tell me.

I asked Rabbi D. Z. Ordentlich, (Moro De'asro in Beitar) & he told me that there is no diference between yochid and tzibbur. Thereafter I found it in Abudarham (after Yishtabach)"Yecholin leha'arich bepiyutim... bein yachid bein zibur".

Is this P'sak in Shu"t Shevet Halevy or someplace else or is it just said over in his name?

I have found a חוות יאיר in מקור חיים who says to says as follows:
וכמה דברים שגם היחיד חייב לאומרן כגון יוצרות וקרובץ, על הכל של שבת, ומעריבי', ה' א-להי ישראל ושומר ישראל ושיר היחוד
מקור חיים, קיצור הלכות, תקסה:ה