Moving to SE LT Headers and True Duel; misc. questions
Thread Starter
Teching In
Joined: Dec 2019
Posts: 44
Likes: 2
Moving to SE LT Headers and True Duel; misc. questions Hi all,
I've been trying to take in as much data as possible on this.
Going to install:
Questions:
I've been trying to take in as much data as possible on this.
Going to install:
- LT Headers: https://www.speed-engineering.com/sh...e-version.html
- True Duel: https://www.speed-engineering.com/sh...rear-exit.html
Questions:
- O2 sensors - it appears there's 4; 2 before the CAT and 2 after. My understanding is that since I'll be running catless (no emissions state) I only need the front two. I'll need extensions for these.
- Do I need to purchase new front sensors? If so, what's the standing recommendation?
- Do I need to plug the rear two? It appears the front two are on the collector part of the header; I'm not sure where the rear two are.
- Spark Plugs - the standing recommendation is to change these and the plug wires. Are there any standard recommendations based on the changes I'm making?
You'll have to get a tune to shut off the rear O2's or install non-fouler/simulators for the rear O2's. You can reuse existing O2 sensors with extensions or purchase O2's with longer harnesses. Some use the 13111's. You dont have to change plugs/wires, but many will change to a TR55 or TR6 depending on mods.
Thread Starter
Teching In
Joined: Dec 2019
Posts: 44
Likes: 2
You'll have to get a tune to shut off the rear O2's or install non-fouler/simulators for the rear O2's. You can reuse existing O2 sensors with extensions or purchase O2's with longer harnesses. Some use the 13111's. You dont have to change plugs/wires, but many will change to a TR55 or TR6 depending on mods.
I'm going to get a tune by Frost. Still need to figure everything out there (EGR, AIR, shift firmness, etc.).
Am I right to assume the front O2 sensors are the one on the collector and the rear O2 sensors at the ones in the first foot or so here before it comes together to form an X? https://www.speed-engineering.com/sh...rear-exit.html
Assuming these are the rear O2s, do I need to plug them? Do I just zip-tie the old O2 sensors/wires together and attach them to the body for safekeeping?
Last edited by Howling_Mad; Jan 18, 2021 at 02:24 PM.
Thread Starter
Teching In
Joined: Dec 2019
Posts: 44
Likes: 2
Now I just need to pick-up a set of MSD plug wires and NGK plugs and I'm set.
I appreciate the help!
