Long Tube Headers - Dodge Challenger Forum: Challenger & SRT8 Forums
Intake & Exhaust This area is for the discussion of everything related to intake and exhaust, from the air intake/CAI to the tail pipe.

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post #1 of 24 (permalink) Old 03-07-2019, 03:37 PM Thread Starter
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Long Tube Headers

I’m looking to Install some BBK Long Tube headers on my 2017 Challenger RT 5.7. I just want to know what’s better suited for me. My Challenger is pretty stock except for a CAI and a Mid Muffler Delete. But I do plan on further modifying it.

1-3/4 in. LT
1-7/8 in LT
2 in LT

Which would better suit me? And give me more bang for my buck. Also any other header suggestions are welcome.
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post #2 of 24 (permalink) Old 03-07-2019, 03:40 PM
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Most have been running 1-7/8, although in the earlier days 1-3/4 was the norm. I am running 2" but I am also running a supercharger.


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post #3 of 24 (permalink) Old 03-07-2019, 03:41 PM Thread Starter
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Most have been running 1-7/8, although in the earlier days 1-3/4 was the norm. I am running 2" but I am also running a supercharger.
Does it throw CEL with the LT?
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post #4 of 24 (permalink) Old 03-07-2019, 03:44 PM
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Does it throw CEL with the LT?
If you go catless...you bet. I have high flow cats and have not had any issues (running stock DTC and downstream O2 settings in the tune...except for transport delay which has been increased by 50%). I also run a set of O2 simulators from Big Daddies.

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post #5 of 24 (permalink) Old 03-07-2019, 04:50 PM
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Which is better suited now is not the question. The question is what are your plans for the future with the car?


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post #6 of 24 (permalink) Old 03-09-2019, 06:27 PM
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Does anyone know how much of the stock exhaust you can use installing long tubes?
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post #7 of 24 (permalink) Old 03-09-2019, 10:39 PM
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Does anyone know how much of the stock exhaust you can use installing long tubes?


Everything after the cat pipes if you pick the right system.


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post #8 of 24 (permalink) Old 03-11-2019, 05:35 PM
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I have 1 3/4 on my 5.7 Challenger and I am pleased. Picked up at the drag strip. I put 1 7/8 on my ram 1500 and it killed the truck, couldn't wait to take them off which I did. 2 inch is way to big for what your doing now. I would go with 1 3/4 personally for what you are doing. My next motor I am building now I am debating 1 7/8 or 2in.

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post #9 of 24 (permalink) Old 04-06-2019, 10:05 PM
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Go with the 1 7/8. Leaves room for plenty of other mods and it's not too much. 2" is more for the boosted cars or fully built strokers.
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post #10 of 24 (permalink) Old 04-10-2019, 06:55 AM
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I'm running 2" long tubes from Stainless Works. I'm N/A and don't have much done. Only reason i'm doing that is because my car was used for R&D and i got them and a full cat back for free. If i had to buy a set, i'd go 1-3/4 or 1-7/8". I picked up decent HP with the 2" but you can defenitly tell that they are to big and the hp and torque curve shifted. In the future i may decide to go with a supercharger but from what i have heard the 2" headers are more for a fully built stroker that is supercharged. I'd like to downsize in the future possibly.
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