Im helping another Hybridz member out with his ride. We have 2 problems to overcome still though. Im hoping to get some advice.
The first problem, the ECU won't put out enough amperage to kick over the Fuel Pump relay. I see 4.5v at the signal wire from the ecu with no relay. If you add the relay then I see .5V before the relay when I should still be seeing the full 4.5V. So I think the ECU Fuel Pump driver is bad. I tried to replace the relay. I made sure the other side of the relay coil had a good ground. It was still dead. So I bypassed it and hooked it to ignition on for now.
Second problem, He is running the greddy style intake with the Q45 TB and a Greddy BOV. I chased vacuum around using my car as the template as it is stock. So now that everything is hooked up correctly and he is still having drivability issues. Once he hits boost the car stumbles. The variable in the system is the BOV. Its an adjustable type that discharges to atmosphere. I know its not correctly adjusted and I know that venting to atmosphere under boost will mess the A:F up. Recommendations? I suggested to find a stock BOV and install it as I don't have the tools or experience to setup the Greddy one. There is a Boost gauge and a Stoic gauge on the car so we can watch what it does. The A:F is all over the place when it stumbles and the boost is low.
just for reference since I couldn't have said it better myself in reference to replacing the OE BOV with an aftermarket one.
Quote: Originally Posted by mtnickel http://showthread.php?p=978726#post978726' target="_blank"> You should be able to just vent it to atmosphere yes. But keep in mind that under vacuum the valve will be open. 2 problems here: 1 unfiltered dirty air gets into your engine. You can throw a breather on it though. 2) the extra air is unmetered. So if using MAF still, then you will be running lean. Alternatively, when it actually blows off, you will run very rich. Long story short, MAF systems typically require a recirculation to avoid running issues. But if you've converted to MAP, then go for it!
Mark
Anyone want to pile on some advice or confirmations? Questions? I know I leave info out sometimes that is crucial.
Thanks Guys! __________________
Ray
