Today I noticed my 02 WRX was sputtering and backfiring from the exhaust when i gave it more than half throttle. The boost also spiked to 20 psi and the max ive usually seen is 15 according to the accessport. Driving around town I can tell the car is slower and the turbo spool is louder. Any ideas what this could be? I did a quick check of all hoses and vacuum lines but they all looked okay
Its cat less. I shouldve posted the mods. Front mount kit, tgv deletes, injen air intake, perrin turbo inlet, boost controller, header and downpipe with 3" exhaust
Turns out my car was in limp mode. Now I'm getting a reoccurring P0507 for idle being higher than expected. I had the car vacuum and boost leak tested, the throttle cable isnt holding the throttle open either. The car does have TGV deletes aswell so when I start the car it idles around 1700 for a few seconds and comes down. This is usually when the engine light comes on. Normal operating temp idle is 650ish