My wrx went in to the shop stage 2 with no drivability problems at all. After the 16g install with all the other required parts and a dyno-tune the power still cuts in and out for a few seconds when i initially get on the gas. They have already spent a few hours trying to fix the problem but no success. they said they would work on a new map and to just drive it for a for now.
The problem is big enough that I cannot just ignore it so my question is: How much should I be expecting the shop to to about this problem without charging me.
I don't want to keep going there and have them spend many hours trying to fix it for free, but at the same time, the problem is from all those parts and the dyno tune did nothing for that problem. I am willing to pay a for a bit more dyno time but I want the problem fixed. If my car is just rejecting the upgrade and it can't be fixed without lots more work and money, I will gladly go back to stage 2 because that had no problems at all.
Just looking for some advice or opinions.