Istalled Glasspack

bhysjulien · **Posted:** Wed Apr 12, 2006 11:32 pm

I had a glasspack installed yesterday. The turbo spools quicker and you can hear the turbo whoosh. The truck is still on its first tank of fuel so I'm not able to comment on mileage. If you're sitting on the fence when it comes to this mod, don't.

TDI4BY · **Joined:** Sun Apr 02, 2006 11:56 pm **Posts:** 644

Don't do it or don't hesitate?

bhysjulien · **Posted:** Wed Apr 12, 2006 11:38 pm

Clear as mud! Do the mod, it's worth it.

TDI4BY · **Joined:** Sun Apr 02, 2006 11:56 pm **Posts:** 644

I plan on stopping at the exhaust shop in the morning, would a Flowmaster be better or???? I think I might go 3" from the converter back.

TDI4BY · **Joined:** Sun Apr 02, 2006 11:56 pm **Posts:** 644

here's what I did...
I have since added a straight through Magnaflow to tune the sound output, basically the same as a Glasspack....

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CATCRD · **Posted:** Fri Apr 14, 2006 3:28 pm

I just got a glasspack installed this morning. After hearing it, I wouldn't pay more for a flowmaster. The sound difference just didn't blow me away. That's good though, I wasn't looking for a loud exhaust. I'm entirely pleased with mine. Standing behind the vehicle at idle, there is just a slight new low rumble to it. Nothing loud or attention getting, just a deeper tone. Turbo spool is more noticeable with the windows down, and there's a more agressive rumble when you goose it past a close by wall or building. I love it. I can't comment yet on highway drone as I haven't had it out on the interstate, but cruising in town at 40mph there is NO drone. I promise you my girlfriend will never notice the difference

Get one!

Ripple · **Posted:** Fri Apr 14, 2006 4:57 pm

I too have a glass-pack, a stainless magnaflow unit. $60 shipped on ebay. mileage went up .5MPG. it's a pretty good mod.

TDI4BY · **Joined:** Sun Apr 02, 2006 11:56 pm **Posts:** 644

it is really not loud at all, I notice it the most while at an idle. It is weird actually, I may add a muffler but this was the cheapest way for me to get rid of the stock muffler for now.

longarm · **Posted:** Mon Apr 17, 2006 12:47 am

..........

Katmandu · **Posted:** Mon Apr 17, 2006 11:41 pm

longarm wrote:

Can you provide me with an addy please? I'm interested in this mod.

Just go to your local autoparts store or local muffler shop. Glasspaks can be had for under $25. Us old timers call them Cherry Bombs.

oldnavy · **Posted:** Tue Apr 18, 2006 9:24 am

Katmandu wrote:

longarm wrote:

Can you provide me with an addy please? I'm interested in this mod.

Just go to your local autoparts store or local muffler shop. Glasspaks can be had for under $25. Us old timers call them Cherry Bombs.

Oh my God you have let the Dog of War loose with that Cherry Bomb info.

mOlson · **Posted:** Tue Apr 18, 2006 10:51 am

With the glasspacks I would be worried about them chocking up with the larger diesel particulates. Glasspacks are just that; a tube full of packed glass fibre to trap the noise. I would go with an open chamber design like a flowmaster which, I would think, is less likely to clog.

Anyone know how these http://www.flowmastermufflers.com/outlaw.html are constructed. They don't have cut-away detail like the other mufflers on the site but notice they say "Suitable for some turbo diesel applications". May have to give flowmaster a call.

oldnavy · **Posted:** Tue Apr 18, 2006 11:42 am

Try here Flowmaster and then click on the standard Flowmaster 40 (that is what I have and it will show the insides) thumbnail. The 40 standard is as quite as OEM muffler and without all the back pressure.

n3qik · **Posted:** Tue Apr 18, 2006 2:42 pm

mOlson wrote:

With the glasspacks I would be worried about them chocking up with the larger diesel particulates. Glasspacks are just that; a tube full of packed glass fibre to trap the noise. I would go with an open chamber design like a flowmaster which, I would think, is less likely to clog.

I had a glasspack on my old 6.5L diesel for 40K miles. Did notice it was getteing slightly louder as time when on. As in clogging, it will not. It is a stright thru with the glass fiber around the circumferance.

mOlson · **Posted:** Tue Apr 18, 2006 3:08 pm

n3qik wrote:

mOlson wrote:

With the glasspacks I would be worried about them chocking up with the larger diesel particulates. Glasspacks are just that; a tube full of packed glass fibre to trap the noise. I would go with an open chamber design like a flowmaster which, I would think, is less likely to clog.

I had a glasspack on my old 6.5L diesel for 40K miles. Did notice it was getteing slightly louder as time when on. As in clogging, it will not. It is a stright thru with the glass fiber around the circumferance.

Thanks for the insight. That does make perfect sense how the sound would degrade but the performance would not then.

n3qik · **Posted:** Tue Apr 18, 2006 3:17 pm

I would not call it degrading, I would call it tuning on the fly.

n3qik · **Posted:** Sun Apr 23, 2006 1:49 pm

Joint the glasspack club. $30.00 and about a hour of my time. Initail thoughts are a little more noise, maybe a little more power. But the one thing I do notice is the shift points are higher. I might disconnect the battery to reset the adaptive lerning of the trans.

TDI4BY · **Joined:** Sun Apr 02, 2006 11:56 pm **Posts:** 644

I had a straightpipe for a tankful but have since added a straight through Magnaflow to tune the sound output, basically the same as a Glasspack....

GMsKJ · **Posted:** Mon Apr 24, 2006 6:30 am

TDI4BY wrote:

I plan on stopping at the exhaust shop in the morning, would a Flowmaster be better or???? I think I might go 3" from the converter back.

Any update on the 3" idea? Sound, performance (I would imagine it isn't really that different than 2.5"), Cost of making/buying a 3" flange? Pics?

Istalled Glasspack

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