Is it possible or will the stock BOSCH pump take a poop/ not keep up?
you could do it...but id run two pumps to get the pressure back.
I was just readig the thread about the Meziere pump and such.
So your saying two pumps, one on the return and one on the feed?
im no engineer but id imagine that if you ran two pumps, no matter where you had them in the system they'd still be doing the same job since the whole system is a cycle. unless the water's flow before the 2nd pump is weak, in which case it would be trying to pull the water along. but i think that would only happen if you didnt have enough water in your system. if you fill it to capacity then it should have plenty of water at all times, in all areas. then the water would just be pushed along as it encounters the 2nd pump.
I understood your plan. I think you'd be ok with one pump, you can always pick up another off Ebay. :beer: