imperfekt
05-15-2012, 08:50 PM
Sorry if this is long, but I'm hoping with enough detail, someone can help me out.
I'm running an m45 with a bov. Yes, unconventional and unnecessary, but it puts a big smile on my face :)
Aside from that, however, I'm having fuel management problems that I'm lost in the dark about. I've been playing with it a lot, and can't find a way to make it acceptable. Throughout my tinkering I've had the physical setup remain constant: air filter, MAFS, IAC hose, blower w/bypass valve, bov, throttlebody, intake manifold.
At first, I didn't run a vacuum from the bypass to the intake manifold. The charger was pretty loud (whining) and the BOV on the charged/crossover pipe was constantly venting air to atmosphere in large quantities. With the PowerCard installed, there was much much thick black smoke. When I unplugged the PowerCard, still smoke, not as much but black and usually upon startup and during idle/throttle spikes. The check engine light never comes on with or without the PC. The car sucks noticeably more gas with or without the PC hooked up.
I decided to listen to Dallas and Cjsafski (as they both have run a sc/bov setup) and hook a vacuum hose to the bypass valve which quieted the charger a lot (especially during cruising) but almost eliminated the BOV except under heavy acceleration. The car sucks down noticeably less fuel. With the PowerCard hooked up, the black smoke is there. Without the PowerCard hooked up, the smoke is less, but still slightly black (not as thick or dark) and overall the car runs pretty smooth. While cruising for a little while, the check engine light comes on (code 17, o2 sensor inverted) and instantly turns off when I depress the gas pedal, only to return after a few more minutes of just cruising. At first, I had thought that the check engine light was coming on because the car was running lean (as the car would sputter a bit and seem to droop in power a hair the instant the light came on), but now I'm not so sure of that theory. With the PowerCard hooked up, the check engine light never comes on, but she smokes badly...
Right now vacuum is running to the bypass, PowerCard is unhooked, she sucks less fuel, smokes noticeably, shines a check engine light while at cruising, and I just settle for spiking the throttle to get it to go away...
someone suggested I might need a megasquirt...
I'm running an m45 with a bov. Yes, unconventional and unnecessary, but it puts a big smile on my face :)
Aside from that, however, I'm having fuel management problems that I'm lost in the dark about. I've been playing with it a lot, and can't find a way to make it acceptable. Throughout my tinkering I've had the physical setup remain constant: air filter, MAFS, IAC hose, blower w/bypass valve, bov, throttlebody, intake manifold.
At first, I didn't run a vacuum from the bypass to the intake manifold. The charger was pretty loud (whining) and the BOV on the charged/crossover pipe was constantly venting air to atmosphere in large quantities. With the PowerCard installed, there was much much thick black smoke. When I unplugged the PowerCard, still smoke, not as much but black and usually upon startup and during idle/throttle spikes. The check engine light never comes on with or without the PC. The car sucks noticeably more gas with or without the PC hooked up.
I decided to listen to Dallas and Cjsafski (as they both have run a sc/bov setup) and hook a vacuum hose to the bypass valve which quieted the charger a lot (especially during cruising) but almost eliminated the BOV except under heavy acceleration. The car sucks down noticeably less fuel. With the PowerCard hooked up, the black smoke is there. Without the PowerCard hooked up, the smoke is less, but still slightly black (not as thick or dark) and overall the car runs pretty smooth. While cruising for a little while, the check engine light comes on (code 17, o2 sensor inverted) and instantly turns off when I depress the gas pedal, only to return after a few more minutes of just cruising. At first, I had thought that the check engine light was coming on because the car was running lean (as the car would sputter a bit and seem to droop in power a hair the instant the light came on), but now I'm not so sure of that theory. With the PowerCard hooked up, the check engine light never comes on, but she smokes badly...
Right now vacuum is running to the bypass, PowerCard is unhooked, she sucks less fuel, smokes noticeably, shines a check engine light while at cruising, and I just settle for spiking the throttle to get it to go away...
someone suggested I might need a megasquirt...