Installed a wideband in my car, and wow is my car running rich!

GT-ER · 05-27-2012, 04:46 PM

Put this in yesterday:

Hardest part was finding a freaking fuse that wasn't on all the time, I've never had a car that had all the fuses powered all the time. I ended up swapping the fuse for the cigarette lighter to the "switched" side ( it's in the fuse box in the engine bay ) and using the cig. lighter as my power source.

Anyways, I did a few WOT runs and holy crap....my car from a 2nd gear start ( 40mph ) goes to mid 10's and once it hits 3rd it'll go to low 10's and even hit high 9's every once in a while.

Time to hit up Jerry...lol.

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tbal · 05-27-2012, 05:38 PM

Try calibrating the wideband?

GT-ER · 05-27-2012, 05:41 PM

Quote:

Originally Posted by tbal

Try calibrating the wideband?

The wideband is calibrated and brand new...my car is definitely running rich...lol.

e55amgrocket · 05-27-2012, 05:44 PM

Just a question but did you calibrate it when you got it. Brand new or not they need to be calibrated but i'm sure you already know this.

GT-ER · 05-27-2012, 05:46 PM

Quote:

Originally Posted by GT-ER

The wideband is calibrated and brand new...my car is definitely running rich...lol.

Quote:

Originally Posted by e55amgrocket

Just a question but did you calibrate it when you got it. Brand new or not they need to be calibrated but i'm sure you already know this.

cahiil55k · 05-27-2012, 05:54 PM

If you do put her on a dyno for tuning, I'd be interested in seeing the difference between the reading from the wideband and the tailpipe sniffer just for sh*ts and giggles.

_AMG_ · 05-27-2012, 06:24 PM

That's pretty rich, whats the ideal AFR at WOT for these engines?

e55amgrocket · 05-27-2012, 06:35 PM

Quote:

Originally Posted by GT-ER

Not sure if you thought it was calibrated because its brand new.

e55amgrocket · 05-27-2012, 06:37 PM

Quote:

Originally Posted by cahiil55k

If you do put her on a dyno for tuning, I'd be interested in seeing the difference between the reading from the wideband and the tailpipe sniffer just for sh*ts and giggles.

My last time on a dyno we actually tested that. It was almost always identical and at the most .2 off but usually only for a split second. ( thats with no cats also FYI)

Lelix · 05-27-2012, 06:41 PM

Looks good in the ashtray. What bank is the sensor reading?

cij911 · 05-27-2012, 06:49 PM

GT-ER - Based upon this, my guess is you would have been fine with stock injectors

...I think you have always been running crazy rich

....

Better rich than poor though, right ????

Hammer Down · 05-27-2012, 07:00 PM

Quote:

Originally Posted by _AMG_

That's pretty rich, whats the ideal AFR at WOT for these engines?

11.8 @ WOT

GT-ER · 05-27-2012, 07:09 PM

Quote:

Originally Posted by e55amgrocket

Not sure if you thought it was calibrated because its brand new.

Nah...I calibrated it.

Quote:

Originally Posted by Lelix

Looks good in the ashtray. What bank is the sensor reading?

Passenger side.

Quote:

Originally Posted by cij911

GT-ER - Based upon this, my guess is you would have been fine with stock injectors

...I think you have always been running crazy rich

....

Better rich than poor though, right ????

lol... on stock injectors my dynos would show high 11's to low 12's.

Quote:

Originally Posted by Hammer Down

11.8 @ WOT

Yes sir...

Firechaser · 05-27-2012, 07:11 PM

9's wow...that is PIG rich! Are you noticing black smoke? What type of WB did you get? Some do need to be free-air calibrated, that almost sounds like it's not reading correct.

Quote:

GT-ER - Based upon this, my guess is you would have been fine with stock injectors

Unfortunately no, AFR's can show plenty rich & still starve a cylinder...the best way to see for sure is to have separate EGT probes for each cylinder....thats how you know for sure your fueling correct & evenly. I've seen die-hards drill their headers for this.

GT-ER · 05-27-2012, 07:19 PM

Quote:

Originally Posted by Firechaser

9's wow...that is PIG rich! Are you noticing black smoke? What type of WB did you get? Some do need to be free-air calibrated, that almost sounds like it's not reading correct.

Unfortunately no, AFR's can show plenty rich & still starve a cylinder...the best way to see for sure is to have separate EGT probes for each cylinder....thats how you know for sure your fueling correct & evenly. I've seen die-hards drill their headers for this.

Yup...black smoke is sometimes visible.

I think cij911 was being sarcastic.

cij911 · 05-27-2012, 07:24 PM

GT-ER - Well generally you will see AFRs 0.5+ leaner at the tail pipe than up near the engine, so maybe you were fine....no idea....Glad you have a wideband now

...

Firechaser - Yes EGT in each cylinder is optimal if you are tuning at the ragged edge, but kind of silly for a street car IMHO....

Firechaser · 05-27-2012, 07:30 PM

Quote:

Firechaser - Yes EGT in each cylinder is optimal if you are tuning at the ragged edge, but kind of silly for a street car IMHO....

I agree 100%...not done on any of my cars although I know a few that have them.

Glyn M Ruck · 05-27-2012, 07:32 PM

Quote:

Originally Posted by Hammer Down

11.8 @ WOT

That sounds about right. These engines won't run well at stoichiometric.

AK-AMG · 05-27-2012, 07:41 PM

Hey GT-ER

That looks the same as what my car had done on the dyno. These things run crazy rich.

GT-ER · 05-27-2012, 08:00 PM

Quote:

Originally Posted by Glyn M Ruck

That sounds about right. These engines won't run well at stoichiometric.

No engine runs well at wot at stoichiometric...lol

GT-ER · 05-27-2012, 08:02 PM

Quote:

Originally Posted by cij911

GT-ER - Well generally you will see AFRs 0.5+ leaner at the tail pipe than up near the engine, so maybe you were fine....no idea....Glad you have a wideband now

...

Firechaser - Yes EGT in each cylinder is optimal if you are tuning at the ragged edge, but kind of silly for a street car IMHO....

My A/F ratio was fine on the stock injectors...thus why I never blew my engine. But they are 100% maxed out just to get to high 11's/low 12's.

Firechaser · 05-27-2012, 08:02 PM

Quote:

No engine runs well at wot at stoichiometric...lol

They do at idle

GT-ER · 05-27-2012, 08:13 PM

Quote:

Originally Posted by Firechaser

They do at idle

Yup...and part throttle. lol.

tbal · 05-27-2012, 09:08 PM

Quote:

Originally Posted by e55amgrocket

Not sure if you thought it was calibrated because its brand new.

Thats what I was thinking lol

Also maybe trying calibrating again? Took me couple tries to get my LC1 properly calibrated. Just sayin...

What side is the o2 on?

GT-ER · 05-27-2012, 10:37 PM

Quote:

Originally Posted by tbal

Thats what I was thinking lol

Also maybe trying calibrating again? Took me couple tries to get my LC1 properly calibrated. Just sayin...

Why would I want to calibrate it again? I did it once and stoich is reading on spot. Why would it be so hard to believe that the car is running so rich? Especially if it's blowing a little black smoke sometimes ( which I stated earlier ).

Quote:

What side is the o2 on?

Quote:

Originally Posted by GT-ER

Passenger side.

05-27-2012, 05:38 PM	#2
tbal MBWorld Fanatic! Garage is empty, add now Join Date: Sep 2008 Location: BC Posts: 3,546 Drives: Haters crazy	Try calibrating the wideband? __________________ PB 11.65@123.16mph 1.74 60'

05-27-2012, 05:44 PM	#4
e55amgrocket MBWorld Fanatic! Garage is empty, add now Join Date: Aug 2010 Location: Northern Va Posts: 1,849 Drives: Dirt Scooters	Just a question but did you calibrate it when you got it. Brand new or not they need to be calibrated but i'm sure you already know this. __________________ 10.51@132 on motor 1.52 60ft 10.52@135 on spray 1.61 60ft Tuned by Eurocharged. New build starts 11/26

05-27-2012, 05:54 PM	#6
cahiil55k MBWorld Fanatic! Garage is empty, add now Join Date: May 2009 Posts: 1,016 Drives: 211-55	If you do put her on a dyno for tuning, I'd be interested in seeing the difference between the reading from the wideband and the tailpipe sniffer just for shts and giggles. __________________ PC Tune 180mm * 82mm * K&N * *JohnsonCM30 PLM shorties** * X-pipe * Secondary Cats Removed * Resonator Removed * Phen Spacers * -10 deg

05-27-2012, 06:24 PM	#7
_AMG_ MBWorld Fanatic! Garage is empty, add now Join Date: Jul 2009 Location: Los Angeles Posts: 6,674 Drives: C63	That's pretty rich, whats the ideal AFR at WOT for these engines? __________________

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05-27-2012, 06:41 PM	#10
Lelix Member Garage is empty, add now Join Date: Jan 2012 Location: Toronto Posts: 111 Drives: 2003 E55	Looks good in the ashtray. What bank is the sensor reading?

05-27-2012, 06:49 PM	#11
cij911 MBWorld Fanatic! Garage is empty, add now Join Date: Mar 2011 Location: Orange County, CA. Posts: 1,166 Drives: one car at a time	GT-ER - Based upon this, my guess is you would have been fine with stock injectors ...I think you have always been running crazy rich .... Better rich than poor though, right ????

05-27-2012, 07:24 PM	#16
cij911 MBWorld Fanatic! Garage is empty, add now Join Date: Mar 2011 Location: Orange County, CA. Posts: 1,166 Drives: one car at a time	GT-ER - Well generally you will see AFRs 0.5+ leaner at the tail pipe than up near the engine, so maybe you were fine....no idea....Glad you have a wideband now ... Firechaser - Yes EGT in each cylinder is optimal if you are tuning at the ragged edge, but kind of silly for a street car IMHO....

05-27-2012, 07:41 PM	#19
AK-AMG Member Garage is empty, add now Join Date: Feb 2011 Location: Perth, Australia Posts: 217 Drives: E55 AMG	Hey GT-ER That looks the same as what my car had done on the dyno. These things run crazy rich.

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