Mac midlengths install
08-24-2004, 10:14 AM
#2
On my '98, the passenger side reached fine. (the front o2 that is)
The driver's side was short. (it comes to the front and goes down). I pulled the 4 wires out of the harness and went down the back. I've heard others say they had no problem, maybe later years are different.
The rears are deleted in my pcm. I have some screwed in there to fill the holes though. I think the wires would reach, but the sensors were out of a v6 and the connectors were different.
My headers and y-pipe had bungs already. It's a used set, so I don't know what you're starting with on a new set...
The driver's side was short. (it comes to the front and goes down). I pulled the 4 wires out of the harness and went down the back. I've heard others say they had no problem, maybe later years are different.
The rears are deleted in my pcm. I have some screwed in there to fill the holes though. I think the wires would reach, but the sensors were out of a v6 and the connectors were different.
My headers and y-pipe had bungs already. It's a used set, so I don't know what you're starting with on a new set...
08-24-2004, 11:18 AM
#4
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ok well I'm getting the MAC's used, so i dont really know how it's setup. I read somewhere that Mac's have 4 O2 bungs. The y-pipe I'm getting with it has gutted cats I guess, or either straight pipe with cats welded around it. I'm not sure. So do I need front or rear O2 sims? I've read enough that i think I'd be fine without extensions. I guess I'm gonna reuse my old bolts and gaskets too.
08-24-2004, 12:14 PM
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thanks alot, at this point I think the only thing that could be a problem for me if that the Y-pipe I'm getting has been cut to fit his catback. I'm running stock piping until a bullet muffler. if my setup ends up being too loud with Mids and an ORY then I'll add another bullet to the I-pipe. I'm wondering if I'll get flutter with my AIR setup and have to do the restrictor plate mod? Is that common, I mean, my engine makes alot of noise and ticking now, but i dont know
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08-24-2004, 04:08 PM
#8
I went ahead and did it 6-8 months after headers were on. MAn I should have doen the restitrictor mod earlier. The egr flapper valves were shot! You can also if you think your gonna need o2 ext use your rear o2 sensors to replace the front ones.
