catless with no CEL ?
- Thread starter FSDET
- Start date
03BlkMicaSPD
Quality Literature...
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- 2003 MazdaSpeed
having no 02 plugged in at all throws a CEL instantly... kinda obvious
so I decided to go with this
Baker Electronics 02simulator. Works perfectly And when ricers ask me what that is under my hood blinking, I just tell them its my Supercharger Purge Actuator.(woowoo)
so I decided to go with this
Baker Electronics 02simulator. Works perfectly
And when ricers ask me what that is under my hood blinking, I just tell them its my Supercharger Purge Actuator.(woowoo)
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Just get a cat-back setup and the Circuit Sports custom "downpipe" setup and you are all set. I have no drone, quiet at idle, nice rumble at lower RPM range (can hear the custom stereo perfectly). Nice deep rumble and louder "full range" sound at WOT and high RPM's. It pulls hard, too. Albert just experienced this a few hours ago. As everyone may now, I have the Greddy prototype setup on my car, I guess they are calling it an SP2 now. Since it has a resonator, I don't have the gurgling or anything (no rumbling or harshness at idle/startup/turnoff, etc). It matches up perfectly to the flanges and angles, too...no leaks or rattlings any longer. I am pretty happy. No CEL as of yet, but it hasn't even been 24 hours.
On the negative side, I do backfire if I keep revving and being stupid. It stinks a bit now, but not rotten egg smell. Also, I have a weird popping noise/jerking at certain throttle positions/boost levels. I will let the car get used to the setup before I judge too prematurely, though...thats my $.02 for what its worth...(rei)
On the negative side, I do backfire if I keep revving and being stupid. It stinks a bit now, but not rotten egg smell. Also, I have a weird popping noise/jerking at certain throttle positions/boost levels. I will let the car get used to the setup before I judge too prematurely, though...thats my $.02 for what its worth...(rei)
Notorious said:
There was a member whose custom setup was like that, and it was causing him to run very lean. Basically, the 2nd O2 sensor is there to make sure the cat is doing it's job, and since it was reading basically the same thing as the first, the fuel map leaned out to compensate for a cat that wasn't working properly. Do you have an EGT gauge by chance?
mazdaspdprotege said:
Are you sure about that? If the sensor checks untreated exhaust fumes, it will see the mixture as very rich. The sensor's job is to maintain a certain A/F ratio, and since it thinks the car is running rich, it *should* lean it out to compensate.
MikeBlueP5
Member
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- 2K2 Protege 5 (Sold) now 08 UrbanRunner
it could take several miles, when i eliminated my first cat it took me approx three tanks of gas or ~1000+- miles before i got a cel then i put on the cel eliminater and no problems since.
mazdaspdprotege said:
After the CEL comes on, the computer goes into a limp mode, where it's just throwing copious amounts of gas into the mix just to keep things on the safe side. It would be interesting to see what a Mazda tech would say on the rich/lean issue. There are a few on this board, aren't there? I'm always willing to learn, even if it means I'm proven wrong in the process
the Midpipe wasn't specifically designed for the Mazdaspeed, therefore the O2 bung in it is actually for a WBO2, which should be before the cat. I guess Beau could of specified when making them. its not hard to relocate it behind the cat.Notorious said:
as for the "super rich condition due to the cat missing" is right, but its a byproduct of the CEL throwing the ECU into closed loop, preset maps, which are SUper rich.
