Will the o2 sensor affect the performance w/o the o2 bung?
#1
Senior Member
Thread Starter
iTrader: (2)
Join Date: 09-24-09
Location: Fort Bragg, NC
Posts: 1,303
Likes: 0
Received 0 Likes
on
0 Posts
Will the catless DP w/o o2 bung affect the performance ?
I'm trying to decide if I should go ahead and proceed with Gestapoo's ZZP DP that I have seen in person and very tempted to buy. I know the CEL will come on w/o a doubt. So will my car be affected by performance w/o the o2 sensor?
Last edited by efactor; 06-16-2010 at 08:54 PM.
#5
Senior Member
Thread Starter
iTrader: (2)
Join Date: 09-24-09
Location: Fort Bragg, NC
Posts: 1,303
Likes: 0
Received 0 Likes
on
0 Posts
I just figured it would effect the air/fuel ratios because its looking for something and its gonna throw something out of whack in perportion. That's why I created this forum to see if its worth the hassle, if not I'm just gonna buy the DP from ZZP with or without a cat. Probably the cat like the Magnaflow Catted sinced it has good reviews and no negatives.
Last edited by efactor; 06-16-2010 at 06:21 PM. Reason: Automerged Doublepost
#6
Senior Member
Join Date: 10-13-08
Location: Bay Area
Posts: 1,187
Likes: 0
Received 0 Likes
on
0 Posts
The Reason I answered it like that was because he asked this.
"I know the CEL will come on w/o a doubt. So will my car be affected by performance w/o the o2 sensor?"
#7
Senior Member
iTrader: (2)
Join Date: 06-09-09
Location: Grain Valley, MO
Posts: 1,218
Likes: 0
Received 0 Likes
on
0 Posts
All it does is read if your cat is within working range, If it doesnt pass the test it'll set the CEL, but as far as actually "doing something" it has no purpose. Having the CEL on for it doesnt change the way the car runs at all, even unpluged the car will run perfectly fine.
The Reason I answered it like that was because he asked this.
"I know the CEL will come on w/o a doubt. So will my car be affected by performance w/o the o2 sensor?"
The Reason I answered it like that was because he asked this.
"I know the CEL will come on w/o a doubt. So will my car be affected by performance w/o the o2 sensor?"
thread/
#9
Senior Member
Thread Starter
iTrader: (2)
Join Date: 09-24-09
Location: Fort Bragg, NC
Posts: 1,303
Likes: 0
Received 0 Likes
on
0 Posts
Well that gets rid of all the confusion if it doesn't do anything to the motor. Best thing I would do is remove the stock dp with the o2 sensor on and put the illegal pipe on. Gestapo can have me install it and let me go for a test drive to see how I'll like it; its another way of selling. But, I'm waiting an answer from him. Because he gave me the same answer last night, but I always like another answer from someone to be convinced.
#11
Senior Member
Thread Starter
iTrader: (2)
Join Date: 09-24-09
Location: Fort Bragg, NC
Posts: 1,303
Likes: 0
Received 0 Likes
on
0 Posts
It doesn't bother me with the CEL on. I was worry about the Air/Fuel Ratios being out of whack without the o2 sensor. After hearing from others, I'm just going to go catless w/o the o2 bung and don't have to risk the o2 sensor being dirty up from the catless.
#14
Senior Member
Thread Starter
iTrader: (2)
Join Date: 09-24-09
Location: Fort Bragg, NC
Posts: 1,303
Likes: 0
Received 0 Likes
on
0 Posts
Last edited by efactor; 06-16-2010 at 09:24 PM. Reason: Automerged Doublepost
#16
Senior Member
Thread Starter
iTrader: (2)
Join Date: 09-24-09
Location: Fort Bragg, NC
Posts: 1,303
Likes: 0
Received 0 Likes
on
0 Posts
so your basically saying, if I remove the o2 sensor with the stock dp on and put a catless with the oxygen sensor unplugged it won't cause my car to go into LIMP mode or cause fuel trims to be out of whatck?
Last edited by efactor; 06-17-2010 at 07:15 AM.
#19
Senior Member
iTrader: (1)
So I was an idiot and ordered the zzp catless dp without any o2 bung. I plan on getting it tuned soon, within a week. Should I see if an exhaust shop can weld an o2 bung on there or should I just disconnect it since I'm going to get tuned anyways? Another thing to note is I have to drive 2hours away to get tuned, so do you guys think that would be an issue, running without the rear o2 sensor at all, driving 2 hours in that condition and then getting it tuned? Thanks.
#21
Senior Member
iTrader: (9)
Join Date: 07-20-09
Location: Platteville, WI
Posts: 5,334
Likes: 0
Received 0 Likes
on
0 Posts
^as much as I want to agree with you on this one due to you being the almighty ZZP.. i have to disagree to a point.
Will the car be "hurt" from running it this way? no. so no arguing there
will there be ANY effects from running it this way? from my experiences, yes. I was running a high flow cat that threw a code (P0420 for the rear cat), and I would notice my LTFT would run about 5% richer. My hwy gas mileage went down quite drastically and when babying it on a all hwy tank I'd be lucky to see 25-26 MPG. I could clear the code, then I'd notice LTFT would go back down until the code would pop up again. This is all on stock tune FYI. Since then I have gotten tuned and disabled the rear o2 and have no issues with my fuel trims or bad MPG what-so-ever. now I see that same 25-26MPG when getting into boost quite often with a mix of city/hwy. just another one of those reasons to get tuned i guess
Will the car be "hurt" from running it this way? no. so no arguing there
will there be ANY effects from running it this way? from my experiences, yes. I was running a high flow cat that threw a code (P0420 for the rear cat), and I would notice my LTFT would run about 5% richer. My hwy gas mileage went down quite drastically and when babying it on a all hwy tank I'd be lucky to see 25-26 MPG. I could clear the code, then I'd notice LTFT would go back down until the code would pop up again. This is all on stock tune FYI. Since then I have gotten tuned and disabled the rear o2 and have no issues with my fuel trims or bad MPG what-so-ever. now I see that same 25-26MPG when getting into boost quite often with a mix of city/hwy. just another one of those reasons to get tuned i guess
#24
Member
Alright Im just gunna add my question onto this thread if you guys dont mind.
I just went to the dealer because my CEL was on and my friends equipment couldnt find what it was.
The dealer told me 2 things were wrong with my car: the rear O2 sensor (after cat converter) was bad and needed to be replaced and my wheel well liners were missing (like that when i got the car) so my stock air filter was getting wet.
From what i just read above would it be safe to assume that i would be fine without spending the $340.05 to replace the sensor???
And as for the liners im just going to buy:
07 2007 Chevrolet Cobalt Inner Fender Well - Body Mechanical & Trim - Action Crash, Left - Driver Side, Right - Passenger Side - PartsGeek
OR
GM Parts Direct: 15289944 - LINER
Just to be safe and itll help protect my injen when i reinstall it
I just went to the dealer because my CEL was on and my friends equipment couldnt find what it was.
The dealer told me 2 things were wrong with my car: the rear O2 sensor (after cat converter) was bad and needed to be replaced and my wheel well liners were missing (like that when i got the car) so my stock air filter was getting wet.
From what i just read above would it be safe to assume that i would be fine without spending the $340.05 to replace the sensor???
And as for the liners im just going to buy:
07 2007 Chevrolet Cobalt Inner Fender Well - Body Mechanical & Trim - Action Crash, Left - Driver Side, Right - Passenger Side - PartsGeek
OR
GM Parts Direct: 15289944 - LINER
Just to be safe and itll help protect my injen when i reinstall it
Last edited by Manopka; 12-27-2012 at 08:12 PM.
Thread
Thread Starter
Forum
Replies
Last Post