n249

Is there any way i can check if this is working properly? My car dosnt seem to be boosting properly all the time. Am i right in thinking this valve opens the dump valve to stop boost spikes? If so could it be venting precious boost at the wrong times?

Or an N18 either? I keep reading that people change their N249's or N18's and their cars run better. My car has very uneven accelleration on part throttle and somebody told me it could be the N249 or N18 at fault. It looks to me though that an N18 is only found on diesels and an N249 is...

OK, here's a guide how to remove your N249 valves. As in a previous thread of mine, i detailed what does the N249 valve do, but here's it again: N249 is controlling the DV (Dump Valve). It is installed between the intake vacuum source and DV itself. When no current is switched to the N249...