OK, 2014 4.0 6SP 4WD DC. TRD Super Charger going in Tues. 18" Magnaflow w/ dump after axle. Are these what I need/want with the new SC? http://urdusa.com/Exhaust-&-Headers-...duct_info.html
If so, I would want the $100 O2 "fooler" as right now we have no vehicle inspection. Will they require any additional exhaust work during install (the stock "y" pipe looks rather restrictive so WHy would I put a SC and Headers just to choke them at the Y? Just spitballing. Help me out guys in making the most logical decision.
Also, if there is no modification (i.e. welding/new pipe) is this a "driveway install" or just pay a buddy w/ and exhaust shop?
Thanks you Taco junkies
You certainly do want the rear O2 simulators as well. When installing these you are removing the front set of catalytic converters and so the rear O2 sensors will throw a P0420/0430 code. If you are okay with having a CEL on all of the time it isn't necessary I suppose (those codes aren't limp mode codes). I highly recommend it though.
It makes sense that the Y pipe now becomes the choke point (which it does), but our engines even boosted are not overly high compression. You'll still reap benefits by having just the new headers, although they are pretty raspy unfortunately. You will benefit from building a new Y Pipe and some people have gotten upwards of 15 horse out of just the Y pipe on a boosted application. I wouldn't go any larger than 2.5" as you will lose too much backpressure down line which will in turn affect your exhaust scavenging.
The headers are a driveway install if you have a lot of tools at your disposal. You will say a lot of swear words and waste way too much time, but it certainly can be done. You will want an extra set of hands with you to help. I did my DTLT headers in the garage in a few hours time.