I just got my 04 wrx two weeks ago, runs great, but i just put a 3 inch DP on it and it was running fine for about ten minutes, then my boost just cut out and its just running vacuum, it does go a little over 0 on guage but then drops right back to vacuum. I have been reading on here and it kinda sounds like my wastegate is sticking, any suggestions??
ok...so it the wastegate stuck, I loosened up the downpipe a bit and it popped back. So does anyone know why it would do that?? It is a divorced wastegate DP so I guess it just got stuck on the lil tab that seperates the exaust gas from the wastegate gas?
Plus, most divorced pipes don't really divorce them for a significant portion of the pipe, so it's a moot point. I'd use a grinder and cut it out. The way I see it, even if you have to buy a grinder at Home Depot it's cheaper than paying a shop to cut it out, even buying the grinder disc that will cut through a 1/4" thick plate of metal.
The purpose of exhaust wrap isn't to lower engine bay heat, it's to retain the heat in the exhaust for turbo spool. It's simple thermodynamics, you want hot exhaust pre-turbo for the increased velocity to spool the turbo quicker but after the turbo retaining the heat won't have any benifit unless your running a tiny exhaust and need the high velocity exhaust to avoid back pressure. Now if our cars ran rear mount turbo setups like the STS kits wrapping the entire exhaust would be warranted or if the exhaust ran close to heat sensitive items like the gearbox and would boil the fluid