is this the shitty wastegate on the K14 at fault?

[CJ_Derv]

I had same problems when running veg on T2, just used to thin it down in a barrel before putting in

I wouldnt start boring banjo out as the inlet and the return are equally matched for IPP, unless you have a guage on your pump i wouldnt start playing with the IPP either as this also affects dynamic advance and could cause more problems if pressure is already ok

You slightly lose a bit of power on SVO anyway so try making a mix of something like SVO pervv and noctane booster to get that little bit back

or maybe an inline heater for the veg to thin it even more before it gets to pump

CJ