Does the CEL fix for dp reduce power?
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From: Milpitas, CA
Car Info: Aspen White GDA
Does the CEL fix for dp reduce power?
Hello. I've notice some power loss after putting on the CEL fix for the downpipe O2 sensor.
I'm not 100% sure if this is due to the fix device. Apparently A/F ratio cannot be read after the fix. This does eliminate any throwing of the CEL but I wonder if it also retard the ECU's work......
I'm not 100% sure if this is due to the fix device. Apparently A/F ratio cannot be read after the fix. This does eliminate any throwing of the CEL but I wonder if it also retard the ECU's work......
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Joined: Feb 2004
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From: New York
Car Info: 2003 WRX (Black)
Originally Posted by kalasend
Hello. I've notice some power loss after putting on the CEL fix for the downpipe O2 sensor.
I'm not 100% sure if this is due to the fix device. Apparently A/F ratio cannot be read after the fix. This does eliminate any throwing of the CEL but I wonder if it also retard the ECU's work......
I'm not 100% sure if this is due to the fix device. Apparently A/F ratio cannot be read after the fix. This does eliminate any throwing of the CEL but I wonder if it also retard the ECU's work......
Interesting... i just had my uppipe and DP installed today with the cel fix done for the DP and notice definete boost issues / decrease in power. Matter of fact in the mid to high RPMs in both 2nd and 3rd it sputters and cuts..?!?!?... (see my post today Help!!).
I wonder if the ECU is going to learn and adjust for these upgrades?...
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From: New York
Car Info: 2003 WRX (Black)
Originally Posted by kalasend
Been 3~4 months for me 
really.
Do you have any engine managment running... i.e. accessport, EcuTek...???
Did it only occure after the cel fix?
-K
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From: Milpitas, CA
Car Info: Aspen White GDA
No engine mgt. No, I'm not sure if this is tied to the cel fix.
However, if you think only of the fact that the ECU is not reading any O2 sensor data....I don't think that's a positive thing
However, if you think only of the fact that the ECU is not reading any O2 sensor data....I don't think that's a positive thing
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Joined: Feb 2004
Posts: 211
From: New York
Car Info: 2003 WRX (Black)
Originally Posted by kalasend
No engine mgt. No, I'm not sure if this is tied to the cel fix.
However, if you think only of the fact that the ECU is not reading any O2 sensor data....I don't think that's a positive thing
However, if you think only of the fact that the ECU is not reading any O2 sensor data....I don't think that's a positive thing
Do you have and aftermarket uppipe??... it has to be the ECU... there are so many people out there that have these setups. I wonder if they all go thru this.
My take is that the ECU is ajusting for the increased flow and mixing the fuel rich. I would think that maybe if we disconnect the negative battery terminal and do the reset mod posted somwhere on the forum that it might let the ECU get a new look..... or now might be a good time to do the ECU upgrade / reflash / reprogram w/ EcuTek. I'm a little warry of the access port despite the raves. It just doesnt have the ability to finite tune like the EcuTek.
K
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both of you need to reset your ECU's and let them learn. You can try the learning trick if you like (hold the car at ~2900RPM with 1-2psi of boost for about 5-10 seconds... use your left foot on the brake). If that doesn't solve your problems, its likely mechanical.
-- Ed
-- Ed
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Posts: 211
From: New York
Car Info: 2003 WRX (Black)
Originally Posted by vaus
both of you need to reset your ECU's and let them learn. You can try the learning trick if you like (hold the car at ~2900RPM with 1-2psi of boost for about 5-10 seconds... use your left foot on the brake). If that doesn't solve your problems, its likely mechanical.
-- Ed
-- Ed
ok?... so get her on the street, put my foot on the brake so the car wont move..... put it in 1st gear...... and step on the gas and slow the clutch out and run it at 2900RPM for 10 seconds..... kindof like im launching but much lower RPM......... right?.
Thanks
-K
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no.
This has to be done while moving, in 3rd or 4th gear, reach 2900RPM, gently brake with your left foot while applying a bit more gas with your right. You want to keep it around 2900RPM and have approx 1-2psi of boost. Do this for about 10 seconds and your IAM will jump to 16 (max).
-- Ed
This has to be done while moving, in 3rd or 4th gear, reach 2900RPM, gently brake with your left foot while applying a bit more gas with your right. You want to keep it around 2900RPM and have approx 1-2psi of boost. Do this for about 10 seconds and your IAM will jump to 16 (max).
-- Ed
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