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05-02-2011, 09:02 AM | #1 |
Scooby Newbie
Member#: 132227
Join Date: Nov 2006
Chapter/Region:
E. Canada
Location: NS, Canada
Vehicle:2004 Forester XT Gold |
Intake AVCS problem - Please help
I own a 2004 Forester XT 5 spd
Not to long ago I had my engine rebuilt by a local engine shop. I have since added everything to the block and put the engine in the car. I am now in the process of working with a tuner to create a break in map. Here is what has been done: Long block: -rebuilt motor over bored w/ 100mm weisco pistons and manley H rods -clevite bearings -supertech valve train (nitride intake valves, inconel exhaust valves, dual valve springs, titantium retainers, replacement seals and guides) -mild port and polish work on the head -arp heads studs -cometic head gaskets -11mm oil pump -stock crank and cams Engine related: -Perrin fuel rails -TGV deletes w/ gasket matching to manifold and heads -Light porting on intake manifold -08+ sti intercooler -APS SR40 turbo -PE 850 injectors -walbro 250 fuel pump -APS hard turbo inlet pipe -SPT intake -Moroso oil pan and pickup -all new idlers and pulleys and water pump -gates racing belts (timing, acc, ps) -grimmspeed 3 port boost controller -Perrin signature series recir BOV -Maddad exhaust and downpipe -no name headers and uppipe (reinforced by my welding shop)- w/ heat wrap The problem I am having is that I am getting some odd AVCS results when logging. If I am correct, I believe the AVCS Intake L+R should pretty much be in sync but in my case they are not. I was asked to do 60sec idle, 60 sec @2000rpm and 60sec @3000rpm. I rechecked the timing and everything is good. I have done some searches regarding subaru + AVCS and there is limited info. Please feel free to chime in on what it could be or what I should try out. I can't change back the injectors without a lot of work as the plugs had to be changed for the PE injectors. Any and all help would be appreciated so I can get the car back on the road. Here is a sample of my first log. I have just taken samples at idle, 2000rpm and 3000rpm . You can see that at first AVCS Left shows results, but then it is just zero. http://i1131.photobucket.com/albums/m556/wakeboardin/7771e2bc.jpg |
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