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Tech Area => General Buick Tech => Topic started by: Joel Russo on September 25 2013, 12:08:57 PM

Title: Which Exhaust ?
Post by: Joel Russo on September 25 2013, 12:08:57 PM
Had the car on the lift to install a new set of MT Drag Radials, and I realized my one muffler shit the bed... Exhaust system is aftermarket but has been on the car for the past 20 years. Car only has 14K on the clock.

I did my research and it looks like the Pypes, 2.5" cat back system with the Race Pro mufflers is a good value for the money for a complete bolt on system.

Is there any other system that is cat back, bolt on, 2.5", that I should look at before I pull the trigger on this Pypes system?  I don't want a loud exhaust... 
Title: Re: Which Exhaust ?
Post by: Steve Wood on September 25 2013, 01:02:30 PM
the Pypes is the best bang for the money.  They have about three different mufflers.  You can go to their site and listen.  Turbo cars are always quieter than regular cars
Title: Re: Which Exhaust ?
Post by: Joel Russo on September 25 2013, 01:45:37 PM
Steve~  I talked to the guy at Pypes that designed the system, at least that's what he told me...  He recommended the Race Pro muffler as it's the only "straight through" design of the three.  I don't want a chamber type muffler, on the GN.  Flowmasters are good on the BB Camaro, but not so on the turbo car.  I want to hear the turbo spool.
Title: Re: Which Exhaust ?
Post by: Steve Wood on September 25 2013, 01:52:26 PM
I agree completely

Not sure I agree that completely :D  I hate FloMasters totally and think they are too restrictive for a serious car-of course, take it with a grain of salt because I have Walker Race Bullets on my 440....
Title: Re: Which Exhaust ?
Post by: motorhead on September 25 2013, 02:25:33 PM
Are you looking at the stainless or aluminized system?

I'd suggest stainless as it will out live the car... your 20 year old system was probably made out of mild steel which is why it rotted out.
Title: Re: Which Exhaust ?
Post by: Joel Russo on September 25 2013, 04:04:08 PM
Are you looking at the stainless or aluminized system?

I'd suggest stainless as it will out live the car... your 20 year old system was probably made out of mild steel which is why it rotted out.

I was looking at the 409 stainless system that Kirban sells.  I don't like the stainless tips, but I can always pain them black.
Title: Re: Which Exhaust ?
Post by: Scoobum on September 25 2013, 05:11:54 PM
RJC
Title: Re: Which Exhaust ?
Post by: gnonyx on September 25 2013, 08:49:19 PM
X2 on the RJC, When the funds are available this is the one I will get
http://rjcracing.com/product/exhaust-systems-2/ (http://rjcracing.com/product/exhaust-systems-2/)
Title: Re: Which Exhaust ?
Post by: Joel Russo on September 26 2013, 07:53:40 AM
RJC


I overlooked the RJC because I was after a 2.5"... Now I need to take a closer look.
The 304 is certainly better quality than the 409.  I'll give Jason a ring and pick his brain.
Thanks for the link.
Title: Re: Which Exhaust ?
Post by: Shimy87 on September 26 2013, 03:46:10 PM
Just installed the Pypes system....real ly like it
Title: Re: Which Exhaust ?
Post by: Joel Russo on September 26 2013, 04:10:29 PM
Just installed the Pypes system....real ly like it

Any issues with the install?
Title: Re: Which Exhaust ?
Post by: Shimy87 on September 26 2013, 04:40:19 PM
Not to many. Glad I had a lift. The pipe that goes from the cat back had to be trimmed to fit, had to cut about 2 inches off one side and 1 inch off other. Also the flange is pretty thick at the cat and kinda hard to get nuts started. Also the tail pipes mount solidly to the frame. They dont supply the bolts but they do supply the poly bushings. The holes in the frame you use are just out of finger reach so thats a challenge.
 
I do like the sound but a but "droney" at 60 mph. I know Flowmaster's are no good for performance on these cars but I did like that sound much better.
 
Hope that helps  :cheers:
Title: Re: Which Exhaust ?
Post by: Joel Russo on September 26 2013, 10:00:25 PM
I have a lift, so I'm good there.  So much for a bolt on system if you had to cut the pipes???
In the pictures I've seen of the Pypes installed, it looks like the tailpipes hang down a bit under the body.  My current tailpipes are 1" below the body.  Are your more than that? 
Title: Re: Which Exhaust ?
Post by: earlbrown on September 26 2013, 11:24:26 PM
Did the Pypes system exist 20 years ago?   I was thinking the GN kit was a fairly recent thing from them.
Title: Re: Which Exhaust ?
Post by: Steve Wood on September 26 2013, 11:55:09 PM
last few years...
Title: Re: Which Exhaust ?
Post by: Steve Wood on September 27 2013, 12:18:42 AM
strange your car drones with that straight thru style of muffler...they are usually pretty much drone free.

You prefer flo masters sound?  Worse sounding mufflers I have heard and always associate them with kids that wear their ball caps backwards and hope to grow up to be UPS truck drivers because they like the sound of UPS trucks
Title: Re: Which Exhaust ?
Post by: deathraider6996 on September 27 2013, 12:37:45 AM
I like flowmasters on lifted trucks but I'm also young. I know that I wouldn't want flowmasters on the tt though. I like the comfort of no drone in them.
Title: Re: Which Exhaust ?
Post by: TURBOPOWERED68 on September 27 2013, 07:56:35 AM
strange your car drones with that straight thru style of muffler...they are usually pretty much drone free.

i also have that damn drone on my car.
My set up is 3" DP into a 3" X 2.5 Y into two 2.5  12" or 14" Summit or Dynomax bullets.
On long drives --- To quiet the drone down a bit i put a cap on one of the tail pipes. Looks like crap but in a hour plus drives its worth it.       
Title: Re: Which Exhaust ?
Post by: Steve Wood on September 27 2013, 09:21:12 AM
The larger pipes tend to accentuate the drone. 

I run 2.5" on one car with Hooker Max flows or whatever they are called.  The other one has 2.75" pipes and 2.5" Ultraflos.  Neither one drones.

The three inch systems, or larger, that I have seen all have that hollow sound that I don't like.

In general, the chambered mufflers like Flow Masters are restrictive compared to the good straight thru units and generally start costing hp past about 500 hp.
Title: Re: Which Exhaust ?
Post by: Shimy87 on September 27 2013, 10:03:03 AM
I have a lift, so I'm good there.  So much for a bolt on system if you had to cut the pipes???
In the pictures I've seen of the Pypes installed, it looks like the tailpipes hang down a bit under the body.  My current tailpipes are 1" below the body.  Are your more than that? 

No, they hang down about that, they are up much closer to the body than the flowmaster system was.
 
With the lift cutting was no biggie, I had the first pipe mounted and then you can test fit the rest, mark where you need to cut and bust out the sawsall. I didnt expect to have to cut either but other than that the rest fits very nice
Title: Re: Which Exhaust ?
Post by: Joel Russo on September 27 2013, 10:13:19 AM
Perfect, thanks for the heads up.
Title: Re: Which Exhaust ?
Post by: Steve Wood on September 27 2013, 11:58:26 AM
usually helps to start at the rear and work forward
Title: Re: Which Exhaust ?
Post by: motorhead on September 27 2013, 03:16:49 PM
The larger pipes tend to accentuate the drone. 

I run 2.5" on one car with Hooker Max flows or whatever they are called.  The other one has 2.75" pipes and 2.5" Ultraflos.  Neither one drones.

The three inch systems, or larger, that I have seen all have that hollow sound that I don't like.

In general, the chambered mufflers like Flow Masters are restrictive compared to the good straight thru units and generally start costing hp past about 500 hp.

I can't agree more.  The 4" system on my Buick drones, the 3" dual system on my MCSS drones and the dual 3" system on our TBSS droned a bit before I built a 3" catless y-pipe... now it really drones over 70mph! And that is through a huge Magnaflow with an internal x-pipe.  The Camaro is catless and is dumped before the axle (no muffler)... and it drones too.

The wagon has a 2.25" system on it with Flowmasters, not preferred by any means. But! It might just make for an enjoyable combo for the family car... and if I want drone it came with some electric cutouts that I can open at will.
Title: Re: Which Exhaust ?
Post by: daveismissing on September 27 2013, 03:21:00 PM
On the "stock" style pypes -very quiet, no drone to speak of- drove 800 mile trips.
If anything they seemed a little short tho- not too long at all.

search:
http://ihadav8.com/forum/index.php?topic=2488 (http://ihadav8.com/forum/index.php?topic=2488)
Title: Re: Which Exhaust ?
Post by: gnonyx on September 27 2013, 04:00:38 PM
How about a video with sound on your new system
Title: Re: Which Exhaust ?
Post by: larrym on September 27 2013, 06:15:18 PM
I'm part Scottish I cobbled together my own 3 inch single with a Dynomax Ultra Flow.
Love the way it sounds at Idle and WOT there is a bit of a drone at 2000-2200 but most of the time it sounds pretty good to me.
I'm kind of blind and partially deaf from age but I'm still a kid at heart especially when I drive the Buick! 
Title: Re: Which Exhaust ?
Post by: motorhead on September 27 2013, 06:41:49 PM
I'm part Scottish I cobbled together my own 3 inch single with a Dynomax Ultra Flow.
Love the way it sounds at Idle and WOT there is a bit of a drone at 2000-2200 but most of the time it sounds pretty good to me.
I'm kind of blind and partially deaf from age but I'm still a kid at heart especially when I drive the Buick!

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