Ok new update on my downpipe went complete other way with this now. I left it with a 3’ vband after the flex Incase I want to remove latter and just do 3’ all the way back.Also recirculated the dump. Was driving home when radiator sprung leak so back to Garage for a few days. My error forgot to bolt down the fan and some how moved enough so blade made contact with radiator. So new fan also. Luckily found one off of a x5 so should receive it in a few days and swap over into my IS shroud. These IS fans are Not cheap lol.
Update on this build guys I finished the about two weeks ago installed a csf allumnim radiator picked up for 340 could pass it up and fixed my broken radiator fan with a used one off of a 2011 bmw 335i GT fan. It is the same as ours just different plug and housing changes, but seeing I had both those items from my fan easy switch and it only cost me $128 and if any of you guys running the 850watt fan these things are expensive so Incase any one has a issue this could be an option for you also.
I been running it since trying to log and make sure all is helathy before I strap it on a dyno.
Car feels great pulls extremely well I stopped at 20 pounds of boost car is all over the place on limited traction and my MTs don’t arrive until tomorrow. Then I can find out if the trans could handle a little more with the stock clutch.
Switched to apex arc8 et35 17/ 91/2 in rear with a 275/40/17 tire hopefully no massaging needed.
I’ll update with logs and dyno charts to see how this bottom mount does very soon.