first off - i`m from germany, so apologies for my not so perfect english
Right, got myself a 01`WRX Bugeye, here`s the mod list:
- 3" turbo back
- open air intake
- stock turbo (not sure what turbo came in this year ?) with a remap from racedynamix (from the UK)
Car drove absolutely fine, but during the last weeks i could feel that there was some issue with the boost goin on.
Up to 3500-4000 rpm everything was alright (felt like boost was rising up too fast though), then suddenly boost drops dramatically, builds up again, drops again, builds up etc.
Had no CEL light so far but i was checking for vacuume leaks and so on, couldnt find any.
The car was pretty much faster on half throttle than on full throttle.
Made another test drive, tried to see what happens in higher gears (the higher the gear - the worse it was) and boom - flatout in 4th or 5th i got a CEL.
The car was accelerating kinda smoothly without any bogging or hesitation, so its not a misfiring issue, at least i highly think so, had one before on an older Impreza and it drove me nuts.
Went to subaru to read out the error code, unluckily it didnt save any (despite the CEL was still on of course), told him to reset the ECU and delete the code, done - no more CEL light on.
That was pretty much 2 weeks ago, in the meantime the car stood for a while, and thanks to the lovely temperatures right now i didnt feel like working on it.
Started it this morning, immediately got a CEL light again (?), so i tried to resolve the boost issue.
I ran a straight line from Turbo housing to actuator (bypassing the boost control solenoid thingy), had a little run around the block, everything seemed fine, the car hit like 7-8 psi (which i think is stock actuator pressure) and reved up smoothly without any drops in boost.
On the way back though it started, idle went up to 1500 rpm (on a way to a redlight idle goes up and down and up and down) and the throttle response was very lumpy, especially on part throttle, WOT is just fine.
Unhooked the battery for 30 mins and put the lines back to the stock BCS, still CEL light, of course still the overboost issue (so i HIGHLY think the BCS is bad (?)), and now i got the lumpy throttle as an extra for free, so instead of fixing it i made it worse
Will take an extensive look on the vacuume lines tomorrow, i also noticed that the ground wire is not the tightest on the battery, cant tighten it more though or ill snap it, will put on a new pole tomorrow.
When i unhooked the lines from the BCS, i should have plugged em with something, he ?
Anyhow, any small advice would be nice, lets see what Subaru says tomorrow, maybe it saved an error code this time ...