It reduces noise somewhat for sure, but wear goes up since temps are
much higher. Also with higher EGTs mufflers behave slightly
differently since the hotter gases also behave/flow differently. For
most absorption style mufflers it's not a big deal, but for resonators
it can shift the range where they cancel.

On Sun, Feb 9, 2014 at 3:39 PM, Neil N <musomuso@gmail.com> wrote:
> Good points. And that's interesting re bolted flanges. I always
> assumed they were there *only* to help with servicing the exhaust.
>
> So with the TD, the obvious purpose aside (turbo boost), if I were to
> assume that the turbo dampens exhaust pulses, does this dampening
> reduce wear and tear on the exhaust system or just reduce exhaust
> noise?
>
> Neil.
>
> On 2/9/14, SDF ( Scott Daniel Foss ) <scottdaniel@turbovans.com> wrote:
>
>
>> About the I4 diesel set up ...
>> for turbo diesel conversions mounted ala stock Diesel Vanagon ( which I
>> strongly recommend ..doing it the way VW did ..engine tilted to the left
>> at 50 degrees )
>> all I have ever done is reproduce the stock DV system *exactly* ..
>> just in bigger pipes and with a glass pack, and I can't think of a case
>> where that did not last just 'forever' ..
>> and ..
>> one would think an inline 4 gas would have less vibration than an inline
>> 4 diesel.
>>
>> I've never even put  a flex section in any exhaust system , just never
>> needed to.
>
>> in my world, all pipe to muffler and pipe-to-cat junctions are bolted
>> flanges, per stock arrangement and never welded ...the junctions likely
>> allow expansion and slight movement, further reducing tendencies to crack.
>>
>> Readers may recall one of my engine conversion mottos ..
>> "Do what the manufacturers do."
>>
>> When they've been doing something the same way for decades ..you know it
>> works.
>> Why reinvent the wheel, aye ?
>
>
>
>
> --
> Neil n
>
> Blog: tubaneil.blogspot.ca
>
> '88 Westy http://tinyurl.com/c8rlw6p
>
> '81 VanaJetta 2.0 "Jaco"  http://tubaneil.googlepages.com/
>
> Vanagon VAG *Gas* inline-VR Engine Swap Group:
>
> http://tinyurl.com/d7gd5ej