I keep throwing CEL's....!

Foo_Blyat · 09-08-2005, 06:15 PM

Well, i thought i was in the clear since after my DP install i didnt throw any engine codes, but a few days later, one showed up. I was driving on the highway and then the cruise started to flash and the check engine light went on.

So i got home, turned off the car, and plugged in the AP.

Got the code: p0420 - which is soemthing about the CAT, and obviously i dont have one so im not surpirsed i threw it. I went ahead and cleared the code but it comes back now and then.

Should i

A) Order the Helix High Flow Catted DP and sell the Invidia

or

B) Get a Mechanical CELL Fix.

I'm also eating a crap load of gas, i fill up like every 2 days, and the smell the i used too love is kinda getting too me. Im not sure want i want to do at this point.

-Foo

STI5150 · 09-08-2005, 08:01 PM

I thought the AP would eliminate the need for a cat?

KiNgMaRtY · 09-09-2005, 05:54 PM

whats your mpg?

***gixxer6*** · 09-09-2005, 07:06 PM

you shouldn't be throwing that code if you are using the ap assuming you are running one of the newer versoin maps. what map are you running?
getting a catted downpipe won't neccesarly keep you from getting the p0420 cel, i have a catted aps tbe and got the code before i flased my ecu with the ap. after i flashed the stage2 93oct. ver1.05 i havent got any cel's since. if you will look in the map notes of a stage 2 map at least the newer versions you will find this:

Quote:

CEL Codes Defeated [WHEN USING AS BASE MAP]
(** means new to latest revision):
P0139 - Rear O2 Sensor Circuit Slow Response **
P0420 - Catalyst System Efficiency Below Threshold

elusiveDesires · 09-10-2005, 01:12 PM

I get the same P0420 CEL. I'm using the real-time version of stage 2 93oct, not the base map. Maybe flashing the stage 2 will fix it. I just haven't tried it yet.

My mpg is actually pretty good. I think it's even better than stock, or at least just as good.

***gixxer6*** · 09-10-2005, 06:57 PM

yeah according to the map notes you have to be running the base stg 2 map for the cel codes to be defeated

***JDM-STI*** · 09-10-2005, 08:43 PM

Look into the Gruppe-s '05 CEL fix. It might solve your problem.

Foo_Blyat · 09-11-2005, 08:37 AM

Ok, a few things to point out.

1. When the AP loads it says its version 1.0 - So how do i upgarde to 1.05

2. My base map is stage1, 93 and the realtime is stage 2 - should i revert back to stock and flash stage 2 as a base map or is their a way to flash it w/o reverting?

3. Im not sure on my mpg but it sucks. I think as soon as i upgrade the ap, and flash the stage 2 as a base map, we might be in the clear.

Thanks for all the help so far, i might actually end up keeping this downpipe after all.
-Foo

boosted2000si · 09-11-2005, 01:35 PM

If you do have to end up having issues with throwing more codes, whoch I highly doubt when you reflash to stage 2, however teh mechanical fix is easly bought at your local autoparts store. Should run you less than $5 and about 30 mins to install. I would definatly try that option before removing the dp.

TampaSTI · 09-11-2005, 01:53 PM

Quote:

Originally Posted by boosted2000si

If you do have to end up having issues with throwing more codes, whoch I highly doubt when you reflash to stage 2, however teh mechanical fix is easly bought at your local autoparts store. Should run you less than $5 and about 30 mins to install. I would definatly try that option before removing the dp.

YES (mechanical fix) i did that and i'm trouble free APS 3" TB Catted

This will need to be modified by drilling a 1/2" hole through one so that the O2 sensor won't bottom out. With both pieces screwed together, the length is around 2". These are the 18mm tapered part, but there is also a 18mm flat These can be purchased from any autoparts house, like Kragen, Pepboys,Napa, etc.

Napa part# 730-2442 18mm longw/gasket spark plugnon-fouler

***gixxer6*** · 09-11-2005, 02:26 PM

Quote:

Originally Posted by Foo_Blyat

Ok, a few things to point out.

1. When the AP loads it says its version 1.0 - So how do i upgarde to 1.05

2. My base map is stage1, 93 and the realtime is stage 2 - should i revert back to stock and flash stage 2 as a base map or is their a way to flash it w/o reverting?

3. Im not sure on my mpg but it sucks. I think as soon as i upgrade the ap, and flash the stage 2 as a base map, we might be in the clear.

Thanks for all the help so far, i might actually end up keeping this downpipe after all.
-Foo

1. You can download the newest versions of cobb's maps here click me
2. I don't think you have to revert back to stock, I think all you do is plug in the AP and then chose change base map. I could be wrong on that.

09-08-2005, 06:15 PM	#1
Foo_Blyat Professional STI Driver Car: 07 S204 WannaBE Location: NW Subs, Chicago Posts: 491 IWSTI Addict since: Jun 2005 Trader Rating: (1)	I keep throwing CEL's....! Well, i thought i was in the clear since after my DP install i didnt throw any engine codes, but a few days later, one showed up. I was driving on the highway and then the cruise started to flash and the check engine light went on. So i got home, turned off the car, and plugged in the AP. Got the code: p0420 - which is soemthing about the CAT, and obviously i dont have one so im not surpirsed i threw it. I went ahead and cleared the code but it comes back now and then. Should i A) Order the Helix High Flow Catted DP and sell the Invidia or B) Get a Mechanical CELL Fix. I'm also eating a crap load of gas, i fill up like every 2 days, and the smell the i used too love is kinda getting too me. Im not sure want i want to do at this point. -Foo This ad is not endorsed by this member. Please register or login to hide this ad.

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09-08-2005, 08:01 PM	#2
STI5150 STI Driver Car: 2005 STI Location: RGV Texas Posts: 212 IWSTI Addict since: Jun 2005 Trader Rating: (3)	I thought the AP would eliminate the need for a cat?

09-09-2005, 05:54 PM	#3
KiNgMaRtY Spec C Club Car: 05 STI Fav Mod: Invidia N1-R Location: Anaheim, CA Posts: 1,311 IWSTI Addict since: Sep 2004 Trader Rating: (5)	whats your mpg?

09-10-2005, 01:12 PM	#5
elusiveDesires Senior STI Driver Car: 2005 STi White/Silv. Fav Mod: Brick on the gas pedal Location: Port Orange, FL Posts: 347 IWSTI Addict since: Dec 2004 Trader Rating: (0)	I get the same P0420 CEL. I'm using the real-time version of stage 2 93oct, not the base map. Maybe flashing the stage 2 will fix it. I just haven't tried it yet. My mpg is actually pretty good. I think it's even better than stock, or at least just as good.

09-10-2005, 06:57 PM	#6
*gixxer6* sponge worthy Location: Mountains of NC Posts: 1,580 IWSTI Addict since: Oct 2004 Trader Rating: (0)	yeah according to the map notes you have to be running the base stg 2 map for the cel codes to be defeated

09-10-2005, 08:43 PM	#7
*JDM-STI* Platinum Member Car: 2005 & 2008 STI Fav Mod: Scott Siegel Tuning!!! :D Location: Columbus, GA Posts: 2,017 IWSTI Addict since: Mar 2005 Trader Rating: (11)	Look into the Gruppe-s '05 CEL fix. It might solve your problem.

09-11-2005, 08:37 AM	#8
Foo_Blyat Professional STI Driver Car: 07 S204 WannaBE Location: NW Subs, Chicago Posts: 491 IWSTI Addict since: Jun 2005 Trader Rating: (1)	Ok, a few things to point out. 1. When the AP loads it says its version 1.0 - So how do i upgarde to 1.05 2. My base map is stage1, 93 and the realtime is stage 2 - should i revert back to stock and flash stage 2 as a base map or is their a way to flash it w/o reverting? 3. Im not sure on my mpg but it sucks. I think as soon as i upgrade the ap, and flash the stage 2 as a base map, we might be in the clear. Thanks for all the help so far, i might actually end up keeping this downpipe after all. -Foo

09-11-2005, 01:35 PM	#9
boosted2000si Professional STI Racer Car: 05 WRB STi-SOLD Fav Mod: Blown V8 Conversion Location: NE FL Posts: 695 IWSTI Addict since: Jul 2005 Trader Rating: (0)	If you do have to end up having issues with throwing more codes, whoch I highly doubt when you reflash to stage 2, however teh mechanical fix is easly bought at your local autoparts store. Should run you less than $5 and about 30 mins to install. I would definatly try that option before removing the dp.