Hi,
I have just fit stage3 ecu from maptun into my 9000cs2.0lpt(auto box) .
The boost reading is same as stage1 though. At the rev.~4000-5000rpm, the boost max at ~15-15.5psi. This is for both ecu since I tried swapping them a couple of time.(I still have the stage1 ecu with me) I thought the stage3 max boost should be more than that of the stage1's?
I have checked APC and wastegate actuator, both are working fine. The boost pressure rise smoothly and stay stable at max before taper off after 5000rpm+. Could it be the dump valve leaking? I still use standard one.
I have another question about boost spike. I used to get the boost spike when I first fit the stage1 ecu, but there is no boost spike now. The boost just rise to max until taper off just before red line. Is this normal?
Thanks in advance for any comment.
Cheers,
POM
remarks. I use 95octane gasoline. The temperature down here is normally 25-30+ degree celcius. I use forgemotorsport actuator. Basic boost is set at 0.49bar.
I have just fit stage3 ecu from maptun into my 9000cs2.0lpt(auto box) .



The boost reading is same as stage1 though. At the rev.~4000-5000rpm, the boost max at ~15-15.5psi. This is for both ecu since I tried swapping them a couple of time.(I still have the stage1 ecu with me) I thought the stage3 max boost should be more than that of the stage1's?
I have checked APC and wastegate actuator, both are working fine. The boost pressure rise smoothly and stay stable at max before taper off after 5000rpm+. Could it be the dump valve leaking? I still use standard one.
I have another question about boost spike. I used to get the boost spike when I first fit the stage1 ecu, but there is no boost spike now. The boost just rise to max until taper off just before red line. Is this normal?
Thanks in advance for any comment.
Cheers,
POM
remarks. I use 95octane gasoline. The temperature down here is normally 25-30+ degree celcius. I use forgemotorsport actuator. Basic boost is set at 0.49bar.