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Offline tparker

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Doug's headers with what exhaust?
« on: April 24, 2021, 11:54:22 AM »
I have been walffling between Doug's and TTI headers. Dougs are about $200 cheaper and I can get free shipping, TTI would be an extra $60 or so. But it looks like it's gonna be another month before I can get them plus another which is almost a 2 month delay before the can be installed. Argh.

Has anyone installed Doug headers with TTI exhaust? I am currious if they mate up or if some fabrication is needed? I believe TTI sells an adapter kit for $45-90. I'm assuming that will be needed but just verifying.


Linkback: https://forum.e-bodies.org/exhaust/17/dougs-headers-with-what-exhaust/21187/

Offline Scooter

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Re: Doug's headers with what exhaust?
« Reply #1 on: April 24, 2021, 12:24:06 PM »
I have been walffling between Doug's and TTI headers. Dougs are about $200 cheaper and I can get free shipping, TTI would be an extra $60 or so. But it looks like it's gonna be another month before I can get them plus another which is almost a 2 month delay before the can be installed. Argh.

Has anyone installed Doug headers with TTI exhaust? I am currious if they mate up or if some fabrication is needed? I believe TTI sells an adapter kit for $45-90. I'm assuming that will be needed but just verifying.

I believe all you would need is the adapter from the collector to the X pipe. Probably cut to fit and clamp.. no fab necessary.

Offline JonH

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Re: Doug's headers with what exhaust?
« Reply #2 on: April 24, 2021, 12:26:57 PM »
Chances are you will have to modify. I have TTI exhaust with older headers (don't know make) and had to modify the connectors. TTI headers have a slight bend or angle toward the center of the car. I don't think other makes are made that way...

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Re: Doug's headers with what exhaust?
« Reply #2 on: April 24, 2021, 12:26:57 PM »

Offline shawge

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Re: Doug's headers with what exhaust?
« Reply #3 on: April 24, 2021, 01:28:40 PM »
JonH is right, the Dougs do go straight back whereas the TTIs point towards the two exhaust clearways in the frame.
I've got a set of Dougs for a 383/400 connected to TTI 3" H exhaust. I got their header back system and the universal adapter (2x straight flanges, 2x 90deg elbows, bolts, etc)
The adapter instructions were easy to follow to make an S curve to tie them together.


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Offline tparker

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Re: Doug's headers with what exhaust?
« Reply #4 on: April 24, 2021, 08:59:03 PM »
Awesome thanks. That makes sense.

Offline 1972V21Cuda

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Re: Doug's headers with what exhaust?
« Reply #5 on: April 25, 2021, 12:47:40 AM »
If I was going to buy headers for a Mopar, I’d only use a TTi....

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Re: Doug's headers with what exhaust?
« Reply #6 on: April 25, 2021, 09:31:49 AM »
@1972V21Cuda Any thing wrong with Doug's headers or just that happy with TTI? They would be my first choice but between the expense and the the extra wait I'm leaning towards Dougs. I have heard only good things with them and they seem to be as well designed as TTI and well recommend. I would be interested in hearing any reasons to avoid them

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Re: Doug's headers with what exhaust?
« Reply #6 on: April 25, 2021, 09:31:49 AM »

Offline 1972V21Cuda

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Re: Doug's headers with what exhaust?
« Reply #7 on: April 25, 2021, 02:25:57 PM »
@1972V21Cuda Any thing wrong with Doug's headers or just that happy with TTI? They would be my first choice but between the expense and the the extra wait I'm leaning towards Dougs. I have heard only good things with them and they seem to be as well designed as TTI and well recommend. I would be interested in hearing any reasons to avoid them

There are very few aftermarket companies that devote themselves entirely to Mopar-only products. Compared to Chevy & Ford guys, our aftermarket options are relatively small. So, since TTi makes a great product & they’re loyal to Mopar people, my vote goes to them.

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Re: Doug's headers with what exhaust?
« Reply #7 on: April 25, 2021, 02:25:57 PM »

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