BIG Daddies Garage Mini Cat O2 Sensor - LotusTalk - The Lotus Cars Community
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post #1 of 12 (permalink) Old 12-09-2017, 05:27 AM Thread Starter
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BIG Daddies Garage Mini Cat O2 Sensor

Has anyone used this Big Daddies Garage Mini Cat O2 Sensor CEL fix when using a decat? Does it work on a SC car?

<title>O2 Simulator Mini Cat Cel Fix best oxygen sensor simulator made.

Installing DMC header and decat on my Exige with REV400, and would appreciate any info about experiences using the Mini Cat.


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2005 Starlite black Elise SOLD
1970 TVR Vixen S2
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post #2 of 12 (permalink) Old 12-09-2017, 05:52 AM
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An angle shaped one worked for me - no cells at all - 2007 Exige
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post #3 of 12 (permalink) Old 12-09-2017, 06:34 AM
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Had mine since 2013 and no CELs ever. Angled one here too.
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post #4 of 12 (permalink) Old 12-09-2017, 09:18 AM
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1st I tried the spark plug defoiler trick..CEL after 50 or so miles. Then I tried Big Daddies straight CEL fix which was the cheapest bit they offered. Several hundred miles later no CEL. I'm happy with it so far.

"In general, the Elise will be kept in best operating condition by regular use."
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post #5 of 12 (permalink) Old 12-09-2017, 09:25 AM
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I have the big daddies one and I'm throwing a code....but I can still pass inspection by getting the other monitors ready while the catalyst monitor stays as not ready. dmc header and decat.

Not sure, but you may want to reach out to BOE about this, I think they can help out.

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post #6 of 12 (permalink) Old 12-09-2017, 09:47 AM
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Assuming you don't have an emissions test to pass, I would think BOE would be the answer here. They can give you a tune that will ignore the o2 sensor post when you aren't running a cat. It will not set the catalyst readiness state in the ECU, so if you have electronic emissions testing, it might not be the fix you are looking for.

"Give a man a match, and he'll be warm for a minute, but set him on fire, and he'll be warm for the rest of his life."
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post #7 of 12 (permalink) Old 12-09-2017, 03:35 PM
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The Big Daddies angled mini cel eliminated my codes for 2 years on a Vision Function Tune. Last year I went with the BOE tune and decat where the second o2 sensor is ignored in the ECU. No problems and no codes. No inspection of any kind where I'm at.
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post #8 of 12 (permalink) Old 12-10-2017, 02:54 AM
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Iíve used both the mini cat and the right angled adapter from Big Daddies, and I had the occasional CEL with the mini cat, but no CELís with the angled adapter.

-Ed
'08 Arctic Silver Exige S240
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post #9 of 12 (permalink) Old 12-10-2017, 03:37 AM Thread Starter
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Quote:
Originally Posted by AustinP View Post
Iíve used both the mini cat and the right angled adapter from Big Daddies, and I had the occasional CEL with the mini cat, but no CELís with the angled adapter.
Thanks, you just saved me about $50.

2006 Laser blue Exige
2005 Starlite black Elise SOLD
1970 TVR Vixen S2
Enjoyed and sold many other British sports cars.
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post #10 of 12 (permalink) Old 08-05-2018, 07:57 AM
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Old thread, but I would like to report that Big Daddies right angled spacer eliminated my CEL.
Rev limiter light works as intended now.
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post #11 of 12 (permalink) Old 08-05-2018, 10:07 PM
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Cool! I bought this a few months back in prep for my smog this December. I am hoping the monitors will set using this. A regular O2 spacer with a sport cat worked, but I want to try mini cat with decat. Will save me a lot of time and pain.

Quote:
Originally Posted by AustinP View Post
I’ve used both the mini cat and the right angled adapter from Big Daddies, and I had the occasional CEL with the mini cat, but no CEL’s with the angled adapter.
Quote:
Originally Posted by 17sd View Post
Old thread, but I would like to report that Big Daddies right angled spacer eliminated my CEL.
Rev limiter light works as intended now.

Where did you guys get the angled spacer?

** save ~10 lbs gain 1 hp ** EQ: Y=(190*X) / (1984-X) where Y is (HP) and X is (lbs)

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post #12 of 12 (permalink) Old 08-09-2018, 06:39 AM
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I bought the angled spacer from Big Daddies Garage ("Angled CEL fix"). Plenty of others out there as well, but the one from BD is a quality piece, I can't speak for any others.
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-Ed
'08 Arctic Silver Exige S240
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