Audi TT 225 sputtering Problem

[BoostinQuattro]

hello everyone. I'm new to this thread and trying out the forum for the first time. I've been having a problem with tt lately. After the car was warmed up my car would sputter pretty bad under hard acceleration and if I did it enough it felt like all boost was gone until I restart the car then it would do it all over again. I've replaced my MAF , n75 valve, New Spark plugs and still same problem. yesterday I removed most of my aftermarket parts ( Dv Relocation kit, Forge Splitter valve, neuspeed Intake, upper left intercooler hose and Boost hard pipe) and the car started running good again. any idea what may be going on ? any help would be appreciated.

[imolafem]

My guess would be a boost leak that you fixed when you installed the stock hoses.

[hunTTsvegas]

My guess would be a boost leak that you fixed when you installed the stock hoses.

I would agree with that as well. A secondary could be the Splitter. If you put everything back, try running a stock Diverter Valve versus the splitter and see if you still experience issues.

[TTwheelman]

have you tried coil packs? also a boost leack as mention above.