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-   -   Supersprint installing question... (http://forum.e46fanatics.com/showthread.php?t=630980)

vlad089 12-08-2008 01:09 AM

Supersprint installing question...
I have bought the full exhaust for BMW 330ci M54.
During the installation of it I got the problem.
The Superspint exhaust has 6 plases for lambda oxygen sensors - 4 at the manifold (787401) and 2 at the front exhaust (787402). But in the OEM exhaust I have only 4 lambda oxygen sensors.
Could you please tell me, how I must install my lambda oxygen sensors in SS and in which places?

bernstem 12-08-2008 08:30 AM

You only need 4 of the bungs. The other two are just extras. Most people use them for EGT or aftermarket wide band O2 sensors.

Pre-cat O2 sensors go at the bottom of the headers. most people install them in the first set of bungs. Make sure you keep banks 1 and 2 sorted out correctly or the car will have serious performance issues.

Post-cat O2 sensors go after your cats. With the supersprint exhaust (assuming you bought cats), you will need to extend your post-cat O2 sensor wires. If you don't have cats, you can plug them in wherever you want or leave them unplugged. Either way you will have a CEL.

vlad089 12-08-2008 10:24 AM

Thank you for your answer. Now I understand the decision of my problems.

So, now I need to extend the wires. I don't have the additional wires with my exhaust package. Could it be there or no?

And if I extend with the wire like the OEM, but not very same, will I have any problems because it will be different strength of materials?

bernstem 12-08-2008 02:16 PM

The exhaust does not come with wires. You will need to source your own wires to extend the sensors. I don't know what wires or where to buy them - my shop took care of it for me.

vlad089 12-08-2008 11:43 PM

You are lucky man! And your shop is great! =)
That is the problem for me with wires.....

330i ZHP 12-09-2008 01:15 AM

if you dont have them - you will need to bung plugs (sounds funny) but they are large (about 1in or 2to3cm) bolts with brass ring gaskets - those will need to be screwed TIGHTLY into the two unused holes.

If you use 16 gauge wire and solder it on each end - you will be sufficient in wire size - also try to use shrink tubing at connection points and then further protect with electrical tape. make certain to run the wires AWAY from the headers and exhaust so you dont get burns or damage to the wiring

bernstem 12-10-2008 09:44 AM


Originally Posted by vlad089 (Post 9036945)
You are lucky man! And your shop is great! =)
That is the problem for me with wires.....

They are good to me. I think they had some extra o2 wires from another e46 they were working on so they just used those and spliced them in. It seems to work fine and they didn't charge me for the parts since they didn't have to buy anything.

vlad089 12-11-2008 04:31 AM

Yes, we did it!!
We extended the wires, than made the diagnostics, and now everything is okay. Thank you guys for your opinion!

tinkwithanr 02-16-2009 08:48 AM

So what do the o2 wires consist of, just two leads? If it just means soddering in a two wire extension for each that's not as bad as I thought it would be.

dpgrand 02-25-2009 09:45 AM

There is no need to extend the stock wires, you simply just need to unclip the extra wire that is tied up under the plastic engine cover.

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