550 cat delete/high flow options? - Ferrari Life
 
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post #1 of 16 Old 09-17-2014, 01:00 PM Thread Starter
 
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550 cat delete/high flow options?

Hi all, what are you all doing as far as the cats go on these cars. 2000 550, he wants to either do high flows or deletes (FL car no inspections). Recommend brands?

I read just today on the "other" forum, that some ROW 550's had no cats due to some counties leaded gas? Not sure if this means all (4?) cats, or if this is false. But if it is true, he may want the OEM cat delete parts. Any help?

Thanks, Tom.
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post #2 of 16 Old 09-18-2014, 08:10 AM
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Hi all, what are you all doing as far as the cats go on these cars. 2000 550, he wants to either do high flows or deletes (FL car no inspections). Recommend brands?

I read just today on the "other" forum, that some ROW 550's had no cats due to some counties leaded gas? Not sure if this means all (4?) cats, or if this is false. But if it is true, he may want the OEM cat delete parts. Any help?

Thanks, Tom.
Tom,
550 have two cats, if you remove those, you must do upgrade of the ECU otherwise the slow-down lamp will be always on and the ECU don't work in a normal way but in a "recovery mode", that is a mode of the ECU that use a fixed mapping that not introduce a correct fuel quantity in the engine, but lean ....
My ferrari dealer did this on some 550 with good results.
The 2000 550 is your car?

Fabio

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post #3 of 16 Old 09-18-2014, 08:52 AM
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Tom,
550 have two cats, if you remove those, you must do upgrade of the ECU otherwise the slow-down lamp will be always on and the ECU don't work in a normal way but in a "recovery mode", that is a mode of the ECU that use a fixed mapping that not introduce a correct fuel quantity in the engine, but lean ....
My ferrari dealer did this on some 550 with good results.
The 2000 550 is your car?


No, it will show a check engine light and record an error for "Low cat efficiency". It will run fine. The engine and the Motronic system have no knowledge about the presence or lack thereof of the cats nor does it need to. The only function of the downstream O2 sensor is to monitor cat efficiency and is a legal requirement, not a mechanical one. The upstream O2 sensor monitors fuel mixture and a malfunction there can cause all nature of problems but the cats have no effect on the operation up the up stream sensors.



The "Slow Down" lights can only come on if a cat is overheating. The cat cannot overheat laying on the garage floor.

The Motronics COULD be recalibrated to optimize running in the absence of the cats but it is not a necessity.
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post #4 of 16 Old 09-18-2014, 11:26 AM
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No, it will show a check engine light and record an error for "Low cat efficiency". It will run fine. The engine and the Motronic system have no knowledge about the presence or lack thereof of the cats nor does it need to. The only function of the downstream O2 sensor is to monitor cat efficiency and is a legal requirement, not a mechanical one. The upstream O2 sensor monitors fuel mixture and a malfunction there can cause all nature of problems but the cats have no effect on the operation up the up stream sensors.



The "Slow Down" lights can only come on if a cat is overheating. The cat cannot overheat laying on the garage floor.

The Motronics COULD be recalibrated to optimize running in the absence of the cats but it is not a necessity.



Sorry .. my information was wrong, better like this....

Fabio

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post #5 of 16 Old 09-18-2014, 11:45 AM Thread Starter
 
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Thanks for the responses.

The reason I am confused is this states that the 550 Maranello has it's main cats in the headers, and secondary cats after? Ferrari 550 : Ferrari 550 Cat Delete Pipes

I thought the 550 Maranello did not have any cats in the headers, just the two in the mid pipes that can easily be replaced with pipes with high flow cats, or delete pipes?

The 550 is my Fathers, I own a 328...

Thanks.
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post #6 of 16 Old 09-18-2014, 11:56 AM
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Thanks for the responses.

The reason I am confused is this states that the 550 Maranello has it's main cats in the headers, and secondary cats after? Ferrari 550 : Ferrari 550 Cat Delete Pipes

I thought the 550 Maranello did not have any cats in the headers, just the two in the mid pipes that can easily be replaced with pipes with high flow cats, or delete pipes?

The 550 is my Fathers, I own a 328...

Thanks.




They are wrong. I do not find that a big surprise.
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post #7 of 16 Old 09-18-2014, 11:59 AM Thread Starter
 
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Also, I saw this on the other forum. It states (from who seems to be a very knowledgeable member) that some 550s left the factory with no cats due to some countries leaded fuel? Seems odd that some counties would have leaded fuel in the 90's and 00's, not to mention then there should be a Ferrari OEM part for the mid pipes with no cats, and I have yet to be able to find such an item.

Can anyone confirm or deny this happened? Image of post attached...
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post #8 of 16 Old 09-18-2014, 12:01 PM
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Thanks for the responses.

The reason I am confused is this states that the 550 Maranello has it's main cats in the headers, and secondary cats after? Ferrari 550 : Ferrari 550 Cat Delete Pipes

I thought the 550 Maranello did not have any cats in the headers, just the two in the mid pipes that can easily be replaced with pipes with high flow cats, or delete pipes?

The 550 is my Fathers, I own a 328...

Thanks.
I have read the capristo link, for me is wrong, 550 not have first cat in the head and secondary cat, the 575 have first and secondary cat!
550 have only one cat every 6 piston.

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post #9 of 16 Old 09-18-2014, 12:03 PM Thread Starter
 
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So Capristo is wrong huh...even late 550's did not have the cats in the headers, just the other two down stream?
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post #10 of 16 Old 09-18-2014, 12:43 PM
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So Capristo is wrong huh...even late 550's did not have the cats in the headers, just the other two down stream?
If you read the description of the test pipes for the 575, the text is the same, except for the references to 575 instead of 550. My guess is that Antonio's ad writer did a cut & paste of the 575 description to the 550 page, but forgot to check the technical specs to see if the description was actually accurate.

'99 550, Rosso Corsa / Nero, S/N:114654, Assy: 31836, Engine: 52084

High mileage, low compression, and missing on a few cylinders.....just like my cars.

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post #11 of 16 Old 09-18-2014, 01:10 PM
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If you look at the parts catalog page I referenced, it shows parts for catalyst and non-catalyst exhausts.

It is illegal to remove the cats, even if there is no testing in Florida. High flow cats will give about the same results as removing the OEM cats and will have provisions for all the sensors to work as designed.

Taz
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post #12 of 16 Old 09-18-2014, 02:45 PM Thread Starter
 
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If you look at the parts catalog page I referenced, it shows parts for catalyst and non-catalyst exhausts.

It is illegal to remove the cats, even if there is no testing in Florida. High flow cats will give about the same results as removing the OEM cats and will have provisions for all the sensors to work as designed.
Oh, yes I see that now, sorry. So going by the link you posted, only cars in the USA, Canada, and Australia had cats? Meaning all of the Euro, etc cars did not have cats?

If that is the case, I am surprised that the cars with cats, weren't rated any lower horsepower wise. Like my 328, is rated at 10 less horsepower than the non cat cars. I guess by this time with the 550, the cats were just much better quality?
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post #13 of 16 Old 09-18-2014, 02:53 PM
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Oh, yes I see that now, sorry. So going by the link you posted, only cars in the USA, Canada, and Australia had cats? Meaning all of the Euro, etc cars did not have cats?

If that is the case, I am surprised that the cars with cats, weren't rated any lower horsepower wise. Like my 328, is rated at 10 less horsepower than the non cat cars. I guess by this time with the 550, the cats were just much better quality?




The cat didn't cost your 328 one single horsepower. The different cam timing, different ignition timing and lower compression cost you 10 horsepower.




This reminds me of the days when people took off PCV valves and plugged the hose because it was an evil government mandated emission control device. Had no idea what they did or how they did it.
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post #14 of 16 Old 09-18-2014, 03:16 PM Thread Starter
 
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The cat didn't cost your 328 one single horsepower. The different cam timing, different ignition timing and lower compression cost you 10 horsepower.




This reminds me of the days when people took off PCV valves and plugged the hose because it was an evil government mandated emission control device. Had no idea what they did or how they did it.
Maybe because that car only has 260/270 hp. But on higher hp cars gains can be had with cat deletes. Hence why I asked, as the 550 has much more power.

I also own a '10 Z06, I gained over 14 rwhp when I deleted the cats on that car.
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post #15 of 16 Old 09-18-2014, 11:59 PM
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No, catalysts were mandated in several other countries, including most of western Europe. Do not have a list of which countries had cats and which did not originally. Not sure when they went to all catalyst equipped, either.

Taz
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post #16 of 16 Old 10-05-2014, 11:31 AM
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I have only heard about a Maserati from 1992 (model 2.24v.)that was delivered without catalyzers. Except from that, I believe 99% of all cars in Europe after 1990 has catalyzers. I have never heard about a 550 without cats.. I may be wrong but it just sounds very unlikely. I really don't see a big problem either to have catalyzers, but the original ones are a bit restrictive. In any case, these cars can go 199 mph. with a completely stock exhaust system and that is fast enough for most people.
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