360 check engine after exhaust upgrade

Removing the cats is probably the culprit. There may be something you can do but I think you may have to live with it.

 

oto, probably not! I had the same problem on a Boxter S. The computer knows its not receiving signals from the lost o-sensors and lights the dash. It seems to have no effect on the engine efficiency or performance, short or long term. If there is a fix I would like to know about it as the light is annoying.

best regards

Gary

 

The “CEL” indicates ecu is responding to the lack of difference in o2 reading from the two sensors (before and after main cats). It is possible that a/f mixture and cam timing could be adversely affected. Since the engine is still running with pre-cats, extended wrong a/f mixture under load can be harmful to those pre-cats. I would definitely at least dyno the car to get a rough idea and/or do something about them pre-cats and all the air pump/plumbing that comes with it.

 

The second set of O2's is only there to confirm the proper operation of the cats. I know of no way to turn that function off .

 

Hi Jim did you get the test pipes from Capristo as well? In my opinion you should replace the test pipes with a set of Hyper-flow HIGH PEFORMANCE CATS. You will have no more ECU problems & other potential problems. I am a Capristo distributor for the Northern USA; I would not have recommended going with the test pipes due to ECU issues in American spec cars. Check out these dyno results on the Hyper-flow cats compared to stock, it’s the way for us Ferrari owners to go here in the USA.
I may be able to help you with your situation, give me a call. If you wish to call Capristo directly, ask for Wolfgang, as Antonio Capristo does not speak English very well. I talk to Antonio at least once a week (in Italian) but I believe the Capristo test pipes were designed for guys who want to run the EURO performance ECU’s. They sell for approx $5000.00 & make approx 30-40 HP.

http://www.nicksforzaferrari.com/fo...ebsite1_057.htm

 

Hi Jim, I believe Meridian is the Capristo distributor for the southwestern United States, they could have maybe qualified you & your needs a little better in my opinion but I do not know the whole story, what I can tell you is this. I spend allot of time with my exhaust customers to try to find out first what they are trying to achieve with replacing their system & give them different options with respect to sound, build quality, HP, emissions & potential ECU issues etc. Sometimes what the customer calls you for may not be the best item or product for his or her Ferrari. That’s where experience & knowledge in certain areas are important. I specialize in Ferrari performance parts & modifications.

Upgrading the ECU is not a big deal; these are actual replacement units so the OEM ones go in a box & get put away. I have seen some really good power improvements from the ECU's, but in my opinion it’s not something I would do to my 360 if it were still under warranty. Call me I will try to help you get more power out of your car & keep your ECU lights happy, no cats at this time with OEM ECU's is a concern in my opinion.

 

As far as Ferrari is concerned it will void the warranty. Even an aftermarket muffler will if they find out you have one installed. In many circumstances it is not legal but you will have to fight them in court for warranty coverage. I am currently the retained expert in a case of that nature.

 

Correct on all counts.

 

Here's a naive question from someone whoe prefers his Ferraris without computers:
Couldn't you simply weld a two bungs into the test pipes, or somewehere else in the exhaust, and keep the second set of O2 sensors?

 

No problem but they still are not testing post cat exhaust gasses that are the only thing that will produce the proper signal.


For the people putting in test pipes (from someone who remembers what air was like in LA in the 60's), do yourself, your kids and the enviornment a favor. Put in high flow cats.