MAGNAFLOW Exhaust Systems Have Arrived !!!

[Keyspider]

Fiddling about on my computer today, I found a pretty good comparison video which shows a back-to-back Dyno run on my Blue Spider.
The car was sick when these were done, due to a bad electrical connection on the starter solenoid causing the Fuel pump to slow and the resulting low fuel pressure.
Its a pretty valid sound bite, as its the same car, same camera, and same place.

Run One is with a stock system with a Aftermarket replacement single Ansa Tailpipe.

Run Two is with the Magnaflow System fitted. The misfire was worse here, but the difference in sound is clear!.

Note he stopped at about 4500rpm... it gets a WHOLE lot nicer at 5k+

I will be posting a better video soon, now I know how to do it, but until then I hope this helps!

[67GTV]

Quote:

Originally Posted by green 69 gtv Although IAP is waiting to see how I work things out, it is likely that they sold me a set-up for a Berlina since I had to shorten it by about 8". Now all the hangers line up reasonably well but the first hanger on the exhaust (the main one that bolts to the horizontal, 2-bushing plate hanging off the transmission) rests about 1" higher than the mounting plate on the tranny. I can get the 2 pieces to mate but only with considerable torture to those rubber bushings which are new. New motor mounts so that isn't the problem. Are these 2 mating surfaces supposed to line up better without much force? I was thinking of disconnecting all hangers and applying downward pressure on the tail pipe, perhaps with the system hot from running to operating temp first, to try to line things up better. Is this a really stupid idea? High likelihood of cracking header? Since I only have 1 place where there is a pipe clamp, I have very few options for making simple corrections by loosening/retightening different exhaust segments. John

[green 69 gtv]

Quote:

Originally Posted by smestas John, Are you referring to the Magnaflow system that is the topic of this thread?

[Keyspider]

I posted the videos of the sound bites.... and nobody has commented!
Just kinda concerned.. can anyone/everyone hear and see them... or did I do something wrong?

[green 69 gtv]

The audio is good enough to hear a clear difference although it is hard to know what the sound would be like when not in a garage. Overall the magnaflow was obviously louder and I liked it a lot. However, on the ansa clip, beginning around 34 seconds into the recording , the higher revs sounded more "classic" alfa to me. Just my personal bias.
John

[Keyspider]

Thanks John, I was concerned that the way I posted it was not right somehow.
Your comment about the Ansa clip is a valid one. I would say that when I swapped from the original style rear muffler to the Ansa, it actually was quieter, deeper and more mellow. I liked it.
I will say that the Magnaflow is much deeper sounding, and in the confined space of the Dyno seemed a little louder.
On the road it is awesome!
It has a deep note missing from the Stock system, and dare I say it sounds a lot more "manly" than before at low and mid revs. At high reves the mechanical noise is still there, but the exhaust not makes your hair stand up!

As I posted above the car was very sick that day and it actually broke down on the way home, and I had to get it flatbedded!
Here is the thread on what happened.
Complete electrical failure... solved!

Anyway, please note that in clip 1 the car was ran to the redline and in clip 2 the Tech killed it at about 4500rpm because he was concerned.
This weekend I will try to do a better clip from inside and outside the car.

[Bill77]

Great soundclips, Keyspider! Definitely looking forward to any new sound/video clips so I can "desk drive" an Alfa.

[Biba69]

Smestas, I know what a pain it is when someone wants only a part of a unit, but...

Could/would you sell just the front resonator? And if so, will stainless weld to just play old exhaust tubing? I have a vintage Euro exhaust on my '75 Alfetta GT and have managed to keep it alive except for the resonator. It is roughly 4" diameter x 9" long. When having a new muffler installed or parts welded up, I always ask the muffler shop if they can replace the resonator. The answer is always no.

If so, how much?

Biba

[Don Suklis]

Where can I find the recording? I'm curious to hear the music before I write the check. My '74 GTV sounds anemic, even with the last muffler removed, a straight pipe to the rear and a resonator tip. Yuk.

Thanks!

Don

[smestas]

Don,

You can get a slight idea of sound from this clip although the test car was not running 100% hence the hesitation and popping.

[smestas]

I'll be going to Monterey for the Historics weekend coming up. If anyone is interested in a system I have space to bring a few up to save on shipping.

[pathung]

The boxes are quite big (i.e. expensive to ship), so Simon's doing everyone up here a nice favor bringing them up!

[iachella]

Can one just purchase the front stainless steel pipe with the fitting to the exhuast manifold? I acquired some time ago two magnaflow mufflers that appear to be the exact ones in this set. With the front piece, I can essentially get a shop to install it.

Thanks,

[smestas]

Stefano,

I only have complete sets for sale. Sorry.

I do however know that Anthony (italcarguy) did an install and has a extra front section he might part with. They didn't use it because the car had headers. Id call him at their shop and ask him if its for sale.

Here is their shop information