Extractor questions

[Foozrcool]

Thanks Fooz.

I'll wait and see what Alan J reckons, but it sounds like I might go ahead with extractors.

I'll need to find a decent exhaust shop in Adelaide who'll fit them and undertake other 'adjustments' without charging like a wounded bull. So far all I have found is second rate places that don't want to know about the issues involved (such as O2 sensors), or other joints that want to charge me an arm and a leg.

I'll probably come back to you with lots of questions, but just a couple about the O2 sensors for now.

1/ How did you get around the O2 sensor problems?

2/ Did you get all four reconnected somehow, or did you 'lose' two or three of them?

3/ If you lost two or three of them, what difference did it make to how the engine runs? No rough idle I trust?

Or does the piggyback ECU (I'm thinking maybe Unichip Q) sort out any such problems?

4/I suppose the real question is can a 380 motor run 'perfectly' with only one O2 sensor and the stock ECU?


KJ.

** QUESTION MOVED FROM TECH TORQUE (NEXT STEP) THREAD **

Answers follow -

1/ With the two rear O2 sensors which are relocated to behind the main underbody cat, I have inserted spacers with a restrictor hole at the exhaust pipe end to space them away from the exhaust flow. This basically reduces the amount of exhaust gas metered so the O2 sensors still think the cats are all in place & working fine. (I can take some pics when I get my car back from the dyno)

2/ No all four are connected. The front two are placed into the extractor pipes in the provided locations, these meter the exhaust the same as they would normally with the factory engine pipes. The rear two which are after the precats are relocated as above & will need the spacers to avoid the CEL.

3/ All four sensors are retained. Even if the CEL on because the rear ones aren't spaced like I have advised, the car drives normally & you just have the annoying CEL on all the time.

4/ I doubt the engine would be happy running one sensor, because the factory ECU can't be retuned I'd say the CEL would be on permanantly & possibly run in limp mode.