Nightmare Diagnosis - idle would pulse from 500 to 2000rpm 2-3 times then stall

[Longuy]

nope not at all... steel wool in the tail pipes and Bounce dryer sheets in the engine bay to keep the mice away.. from what i've read online.. next winter inside storage plus steel wool/bounce dryer sheets.. gotta cut out all variables

[Overdrive]

Storage on a farm sounds like there will always be high potential for rodents to try to get into the car's nethers. As for that bizarre failure that you had, could the way the car is tuned to run on the supercharger have caused that melting to happen? If I hadn't seen your picture I wouldn't have believed it.

[Longuy]

Originally Posted by Overdrive

Storage on a farm sounds like there will always be high potential for rodents to try to get into the car's nethers. As for that bizarre failure that you had, could the way the car is tuned to run on the supercharger have caused that melting to happen? If I hadn't seen your picture I wouldn't have believed it.

The car was using the stock Jackson Racing tune, which is probably fairly conservative. There is no doubt the supercharger contributed to the issue to some degree.

[Longuy]

Update:
I'm trying to update information because so many times searching and hitting dead threads without resolutions.

We had the car tuned. It seems the problem "maybe" with the car running lean, in a cylinder. Below is what the tuner said:

It’s not so much the direct injectors that are the cooling but the fuel itself. Fuels role is to keep things cool inside the engine and when the system is rich it runs cooler and when the system is lean it runs hotter. The engine is getting leaner as RPM increases even though we tried to increase fueling at lengths we should not have to and we even compared it to a map for another JRSC car we did and that car had no issues with achieving the correct AFR. This indicates that something is not providing enough fuel, and unfortunately, the BRZ is a Dual Injection system which further complicates things. It could be that one of the port injectors is bad but it’s far more likely that one one of the direct injectors is bad because the vehicle runs on the port injection at idle and the vehicle has no problems idling so it’s less likely to be a port injector. We should be hitting around 11.5:1 AFR but the vehicle was leaning out up to 13:1 which is unsafe.

[Overdrive]

Seems like pretty sound troubleshooting logic. Are you going to replace some injectors, then?

[Lantanafrs2]

Maybe check the intake o rings?

[Longuy]

Originally Posted by Lantanafrs2

Maybe check the intake o rings?

yeah, they have been checked. that is part of the problem. We have bled $2000+ in labor and 2 months to NOT diagnose the problem. Which included re\re intake and port injectors. Subaru Guelph Diagnosed the clogged catalytic and got back to me in 24hr. To be fair the Guelph Subaru diagnoses was built on information provided.

Originally Posted by Overdrive

Seems like pretty sound troubleshooting logic. Are you going to replace some injectors, then?

Nope .. not this year unfortunately. going to run it "spicy", budget ran out.

The DI are most likely fine in talking to Subaru.

Trust most definitely been broken with the Performance Shop. They have a good rep in the Greater Toronto Area. Paid Not have the car diagnosed or tuned properly, really sucks.

We found out that once you have your car tuned at one shop another can't build on it and will have to start from scratch. Oh well live and learn

[soundman98]

Originally Posted by Longuy

We found out that once you have your car tuned at one shop another can't build on it and will have to start from scratch. Oh well live and learn

this is a general life lesson. everyone does things differently. it always ends up costing more to change who's doing the work. some people cut corners, others don't cut corners but meet applicable codes in different ways that don't make sense to others.