eurotall

Has anyone used a diode or resistor (whichever is needed) to trick the ECU from throwing CEL after gutting both DP's intoPiggiePipes ?
...instead of relocating the O2 sensors with drilling and welding bungs after the Cat.

I did STFA but nothing....cant find any posts on taking this route versus Relocating O2 sensors after the Cat....((several posts on Relocation))

TIA

kiNGMak.:.OEM

buy some spark plug non foulers.. do a search...

B5QShip

as kiNGMak said, spark plug non-foulers. Also search for LanceEagle's post on O2 Simulator Solution

eurotall

Found Keman's o2 Simulator mod not Lance Eagle's...Non-foulers seem to all be in the A4 forum not S4

B5QShip

look in Edy Jun's S4 directory, and you should find the 02 simulator post catalogued there.

LanceEagle

If your interested, see sig

mbox

sadly, it's probably the only mod I've done that's worked flawlessly.

B5QShip

I'll more than likely be using the same fueling setup as you, so I'm curious what kind of luck you have with it...

mbox

The Delphi's throw too much fuel for my taste. I could never get my part throttle fuel trims < 10% even if I pulled 25% primary.

Honestly, this is not an area you want to go against the grain with. Go with a modded airbox and greentops like most the homebrewers. You will be a lot happier if you run into any problems that need working out. I'm learning this issue the hardway.

The tweakin' and tunin' is coming along very slowly. I recently just pressure tested my car and found 3 small boost leaks and think my cat may be bad but b/c of my own 02 mod, I won't throw a cat code so the only way to tell is a visual. I'll get through this eventually goddammit.