Has anyone used the "diode" trick instead of relocating o2 bungs for piggies?

[KryptoniK01]

Has anyone tried this trick on an S4 with any success?

AW Tech Article

I bought a spare set of DP's so I have loads of time to prep and get them ready prior to install, but if I can use this trick instead of relocating the bungs that would be great. Only problem is that the tech article does not state what model the mod was being done on. I know the o2 wire harness clip colors match up (green and brown) so I would imagine it should work, but I'd like to know for sure before I go hacking into my 02 wires.

Has anyone tried it out? comments?

TIA,

[mholme]

I wouldn't even waste my time. I read into it, but I don't see anyone with an S4 that got it to work. You already have a spare set of pipes, just relocate them and be done. Even antifoulers aren't 100% guaranteed, so you really have a good oppurtuntiyhere with the spare pipes. Interested in selling yours once they are off?

[KryptoniK01]

I wouldn't even waste my time. I read into it, but I don't see anyone with an S4 that got it to work. You already have a spare set of pipes, just relocate them and be done. Even antifoulers aren't 100% guaranteed, so you really have a good oppurtuntiyhere with the spare pipes. Interested in selling yours once they are off?

If the trick does indeed work then it would be a heck of a lot easier splicing in two diodes than having to buy bungs, drill new holes, weld-in the new bungs, plug up the old ones and then extend the wire harness. There must be someone that's used this method or at least attempted it considering the tech article has been around since 2004.

As for my DP's, they are off a tip so they wont work for you if you're a 6spd - otherwise I'm not sure how soon I can install them so it may be a month or two before I have them swapped out.

[The_Jerbel]

I've never tried this, but I'm sure if it did work, then major tuners would sell diodes and let you install them, instead of having to code-out the rear O2's in the software.

[mholme]

If the trick does indeed work then it would be a heck of a lot easier splicing in two diodes than having to buy bungs, drill new holes, weld-in the new bungs, plug up the old ones and then extend the wire harness. There must be someone that's used this method or at least attempted it considering the tech article has been around since 2004.

As for my DP's, they are off a tip so they wont work for you if you're a 6spd - otherwise I'm not sure how soon I can install them so it may be a month or two before I have them swapped out.

Relocating O2's is not that hard at all, especially in your case with spare pipes. Yes, you have to buy bungs and worse case scenario, pay someone to weld them if you can't. But a tried and true method it is. You can buy 18mm caps at autozone to plug the old O2 locations. Like you said, you searched four years of archives and haven't found a success story yet..

[KryptoniK01]

My guess is that coding the o2's out rather than selling the diodes is to eliminate the risk of having to deal with customer phone calls after sloppy wiring jobs etc. Or possibly because it gives them a reason to sell you some new software It would be hard to tell customers they are required to splice into the wire harness after they just dropped $1000+ for DP's... or it could absolutely be because this "trick" does not work at all. Someone must know!

I can definitely do the welding\relocating etc on my own so its not a problem if that is the route I need to take - its just that splicing in 2 diodes would take 10 min and costs $2 and the whole relocating process would be at least $30 (not a big deal), but also a few hours of labour.

[The_Jerbel]

Try it, find out, and let us know

[Overboostin]

I'm going to be trying this this weekend. I'll let you know how it goes.

[sCeRaXn]

If you dont mind the work then try it out and let us know. Im sure plenty of people would prefer this method. It only took me 15-20min to weld in new bungs so id rather do it that way, but for the people who cant weld this would be another route for them to take. Just remember that if it doesnt work youll have to take the dp's out again to weld some bungs in...or just get the celiminators from vast.

[KryptoniK01]

I'm going to be trying this this weekend. I'll let you know how it goes.

perfect, thanks!

Just remember that if it doesnt work youll have to take the dp's out again to weld some bungs in...

This is exactly why I was hoping to find someone who's already given it a shot. I don't want to have to do the install twice, esp on a tip.

[mcjim]

I have it done to mine. Did not work at all. sorry

[KryptoniK01]

I have it done to mine. Did not work at all. sorry

Thanks for the heads up.

Looks like I have some welding to do!

[Overboostin]

Not to threadjack, but I'm running the ssautochrome downpipes and catback with no cats. Am I fine for now with no defoulers and no diode mod? I don't want to be running rich.

[mcjim]

the secondary o2s have nothing to do with changing your a/f, they will however trip your cel.