exhaust leaks and tuning problems

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Jul 6, 2004 | 08:58 AM

CHRISPY

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exhaust leaks and tuning problems

Hi guys,

What effect (generally) do exhaust leaks have prior to the O2 sensors?

I am getting a header leak by the flange and also a leak on both header collectors where the reducers are attached to the merge collectors.

Would this cause a huge tuning change requirement after I fix/weld these leaks?

Do exhaust leaks typically lead to idle problems?

thanks again,
Chris

Jul 6, 2004 | 09:21 AM

HumpinSS

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From: Waldorf, MD

I would assume so. The o2 will be seeing a super rich (IIRC) condition and start compensating for the extra oxygen in the exhaust. This will be reflected in your TRIMS extremly -

Jul 6, 2004 | 11:58 AM

Ragtop 99

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From: Bethesda, MD

Chris:

The exhaust leak can lead to idle problems. Depending on where the leak is, the scavenging can suck air into the collector and cause the A/F to be off.

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