Problems with car

Hi guys

i have mk5 gti golf,,
i just installed a forge diverter valve on it and no i have 2 problems ,,
1, if feels at low revs it struggles with power and it sounds like its sucking in air and then it suddenly gets power,
2, after driving for a bit ill come to traffic lights orstop and the car will just stop, i think its problem with the egr valve but don't no if it will be able to be mapped out or will i need to blank it or something,


please help


thanks

dean

 

'Forge Diverter' valve as in a blow off valve?

 

Runner flap issue possibly?

 

Yer as in blow off falve...

Where is the runner flap ?

 

They are in the intake manifold. You can get an RFD flap delete kit but then have to have it mapped out. Best to get it diagnosed properly.