Quote:
Originally Posted by larrybuck
The main thing I'd be concerned about, is; does this setup cause the eng. to run too lean?
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I would worry more about it running to rich, the reason that broken exhaust can bend valves is from the stall in exhaust flow from the lack of exhaust pipe, a cold draft of fresh air hitting the exhaust valves then cause them to warp and bend, if that draft of fresh air hits the o2 sensor it will see that fresh air as unburned and call for more gasoline to be used.
This is of course easy to check for by pulling the spark plugs and seeing if you are running rich or lean, so it might be an issue and it might not but either way you can check for your self and it will not cost you anything other then a few minutes of time.