| Thanks Antony, I guess you'd have a quick reply!
My fear was having less restriction in the exhaust might make the engine run to lean. I think the full DP Termi kit includes a blanking-off bolt for where the lambda sensor goes on the standard down pipes (open loop DP ECU doesn't require a lambda sensor?).
I don't think I have a cat unless it is inside those huge standard drainpipe silencers.
I also read somewhere that the lean running of the standard engine can cause it to vibrate more than it would if the fueling was a little richer? | 
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