Thread: Speed Daddy Headers

Question for you guys. I'm looking at getting SD headers installed and I know I need an extension for the O2 sensor. Looks like ZZP sells two different kinds and when I asked ZZP which one I needed they wouldn't tell me because they don't sell SD headers. Can anyone tell me which one I need and do I only need one for that matter?

You need the front. 16"

Keep in mind that you are going to have to adjust the tunnel edge/firewall where the o2 will hit it.

Originally Posted by BillBoost37

You need the front. 16"

Keep in mind that you are going to have to adjust the tunnel edge/firewall where the o2 will hit it.

or you will get tons of false knock like me...

Originally Posted by BillBoost37

You need the front. 16"

Awesome. Thank you!

Originally Posted by BillBoost37

Keep in mind that you are going to have to adjust the tunnel edge/firewall where the o2 will hit it.

I see. Is that hard to do? How do you do that exactly?

get fancy with a hammer

Hammer time! not that hard, but make sure you have plenty of clearance. When I did my speed daddys, I left what I thought was 1/4" clearance. Not enough apparently when I put the front mounts back in place.

Now I have a false knockin' machine! Gotta get back under there with a ball peen and take my frustrations out on that firewall. Good thing it's not my DD

One thing I did for the O2 extention was wrap it in that metal duct tape you normally use for dryer vents.

By the way, leave the O2 for the end so you know exactly where you need to hammer.

Or...get a rear o2 sensor for a C5 Corvette and splice the the wires...its a very tiny sensor.

Originally Posted by bluegtp91

Or...get a rear o2 sensor for a C5 Corvette and splice the the wires...its a very tiny sensor.

will your tiny sensor fit in my bung hole?

Originally Posted by SilvaMan61

will your tiny sensor fit in my bung hole?

I didnt hammer mine out, It is a really close fit tho, wires might might be just barely touching the firewall, maybe thats why I have been seeing some knock and im on my stock pulley

i finally just got my sh!t fixed on friday. midas bent my hooks up for me bc i snapped about 6 exhaust donuts bc the hangers were too damn low. midas was awesome and did it fo freeeeezies. props to those doodz. three of the guys there have grand prixs and they were lovin talking to me about it. lol. win! just gotta scan and make sure it was false knock...

lol, seriously though will the c5 sensor fit?

the down stream sensor for c5 has the same hookup for our up stream it looks like

Originally Posted by redlinepontiac

the down stream sensor for c5 has the same hookup for our up stream it looks like

are you saying that it is a direct connect then, or does it still need to be spliced, because i'm interested in this...

i went into autozone and had them compare, the connections the same but i dont know if they work the same

From what I could find, for both sensors, the PCM supplies 450mV, the O2 returns 1,000mV for a rich condition. The only difference is that the C5 O2 returns 10mV for lean vs 100mV lean in ours. I'm not sure if that matters much at all.

sounds like it would...but i can't comment or speculate. that sounds like a big difference to me...

^someone with smarts and time confirm