DT Header O2 extension needed?

[SICARIO]

i took advantage of the 15% eBay discount and ordered a set of DT headers. I’m gathering parts I need (Oem gaskets, new studs&nuts).

I read on one review that a front O2 sensor extension was needed. Can anyone confirm that this is the case?

 

[MongooseGA]

I can confirm that on my 2000 LC there was nothing required for the install other than a good set of OEM gaskets from Mr. T.

My tech did suggest rocking the engine back or lifting it up a little on one side to get the part into place. He also went out and bought a huge double-flex head ratcheting gear wrench set after he finished installing mine, and advised me that he would never install another set of headers on 100 series ever again.

 

[maxse01]

Nothing needed for my install, I reused everything because it was still good. Approx 40,000 miles with them in and I love the added power.

 

[pdxlc]

I also purchased my DT headers from ebay, I needed an O2 wiring extension on the driver-side header. Not sure if the O2 bung was located differently than most headers or if my factory wiring was shorter than most. I used Caspers Electronics 10920 extension.

 

[MongooseGA]

Nothing needed for my install, I reused everything because it was still good. Approx 40,000 miles with them in and I love the added power.

How dramatic was your power increase? I was very disappointed to notice almost no discernable improvement.

 

[maxse01]

How dramatic was your power increase? I was very disappointed to notice almost no discernable improvement.

I had the DT catback first, that was mostly noise. But adding the headers there was a noticeable increase from 3500-5000rpms. My wife has a stock 100, so when I drive hers it feels much more restrained.

 

[MongooseGA]

I have to wonder if they both need to be on in order to get the full improvement. I did notice a slight increase in mileage but that truck met an untimely demise before I could put a cat-back on it.

 

[ZetheGSD]

After doing the DT Cat Back as well as the headers I really noticed a nice change in the bottom end to mid range. Gas mileage was not improved that I cold tell. To answer the questions about an extension for the O2 sensor, I did have to re-rout the drivers side pigtail around a shield to make it work. I was even able to remove the drivers side manifold without disconnecting the steering shaft! I only lost most of the skin around my hands but overall this repair I swear to never do again...

At 160K Parts needed:
Most of the studs came out of the heads
All 16 nuts and studs
Mr T gaskets
Crap ton of PB blaster

 

[Dparo]

I just did the headers on my 07 and didn’t need the extension.

 

[MallX4]

I didn't need the extension either. I have brand new studs if anyone needs them for their install.

 

[Six7One]

No extensions required. Per the manual, you need only undo the first clip per side.