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Re map ECU after new Exhaust and cats?


phillipj

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Okay Turbo people... I'm new at this so here is a question. I just added a new exhaust with 200 cell cats to my 997 Turbo. Previously the ECU was upgraded with only GT2 plugs and a BMC filter. Should the ECU get a new map for the addition of the exhaust and cats? Neccessary? Not neccessary?

Any input would be appreciated

Thanks!

:renntech:

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Disconnect the Positive and negative terminals? or just the negative?

These 200 cell cats will pass. If they don't they guy I bought them from will buy them back from me.:rolleyes: 100 cell cats will not pass CA smog.

Fabspeed, Tubi and Techart 200 cell cat exhausts will pass. If they wouldn't pass smog they would have to put a warning of "Track use only". Also if they wouldn't pass they would not ship to California. If for some reason I have a problem I'll just put the stock exhaust back on...

Thanks for the info Loren

Edited by phillipj
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Disconnect the Positive and negative terminals? or just the negative?

These 200 cell cats will pass. If they don't they guy I bought them from will buy them back from me.:rolleyes: 100 cell cats will not pass CA smog.

Fabspeed, Tubi and Techart 200 cell cat exhausts will pass. If they wouldn't pass smog they would have to put a warning of "Track use only". Also if they wouldn't pass they would not ship to California. If for some reason I have a problem I'll just put the stock exhaust back on...

Thanks for the info Loren

Shouldn't the exhaust also have some sticker or indication that it is "CARB approved"?

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Don't know about that JH. All I know is that when you go to order an aftermarket exhaust for the Turbo the "race" version is stated as for "off road use only". The "race" version either has 100 cell cats or no cats at all.

There are too many of these exhausts out there for them not to pass smog. No one wants to deal with that. I found out though that you do have to reprogram the flash to raise the limits on the 02 sensors. If you don't do this you get a CEL...

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