will i need 02 sensor wiring extensions?

[RedRocketZ28]

Tune is not necessary, but will maximize power gains as headers tend to make you run rich. Front o2s need extensions with long tube headers, without cats you do not need rear extensions. Front o2s mix fuel, rear check cat function. You will need to trick the rear o2, tune it out or get sims. I highly recommend tuning them out, and tricking them until you get them tuned out. Sims are about $70 or more, and can fail or not work on some cars. There are threads across the LS1 forums about failed sims.

I would like to eventually get them tuned out but is that required right away? Wont it just throw the SES light on and that's it? If I don't "trick" them will it hurt my car in anyway? Thanks for your help.

[blue02Z]

i got sims. no problems yet

[Silver Streak]

I ran mine with no rears or sims for a couple months before I could get it tuned...

[Wheeler99WS6]

I'm not far South of you. Henderson, KY. Right across the Ohio from Evansville, IN.

I believe I have drove through Henderson on my way to Gulf Shores, AL. I think Henderson is only around 3 hours away but cant remember for sure.

[9t8z28]

IMO, you need two 12" o2 extensions. I re-routed my drivers side primary wire to get it away from the header so I had extra wire to begin with, so the 24" was just too long.