Bespoke S4 [AAN] downpipe & jig - [Ver 01!]

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Feb 16, 2004 | 03:17 PM

unicomS4

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Bespoke S4 [AAN] downpipe & jig - [Ver 01!]

<center><img src="http://www.unicomsystems.co.uk/images01/A_S4_Jig10.jpg"></center><p>1st attempt at my bespoke downpipe.

2.5", 304 grade stainless steel, new flanges and a de-cat pipe. [looks better on the inside at this stage!]

Anyone else want to play with the jig?

Feb 16, 2004 | 05:25 PM

sligh93

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Re: Bespoke S4 [AAN] downpipe & jig - [Ver 01!]

Mandrel bend that ****!! That crimp looks restrict-o-rific.

Feb 16, 2004 | 07:40 PM

UrS4boy

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Geez. I wanted to say that but I didn't want to hurt Gary's feelings. Agree Mandrel bend = must

Feb 16, 2004 | 08:55 PM

quattropat

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Good way to go, I had to use my car as a jig !!

Feb 17, 2004 | 10:27 AM

unicomS4

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Re: Hey .... I'm always willing to learn! ..... but

<center><img src="http://www.unicomsystems.co.uk/images01/A_S4_Jig11.jpg"></center><p>... maybe the other pic didn't do it justice. Internally it's true to form .... ie, as near damm it a 2.5" diameter, circular profile throughout the bend. [Remember it has a larger diameter de-cat pipe incorporated along the 'down straight' and a half round, forward facing 'stone guard' protecting the bottom bend]

It's hard to believe it could be much better as the torque increase is fantastic just as it is!

Any suggestions welcome though .... there's always a MkII version!

Feb 17, 2004 | 10:31 AM

Rich L.

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Looks Great!

Nice looking part! I had a custom downpipe done for my 20v urq yesterday at a shop up here in the Seattle area. They did nice work too. Mine's also 2.5" and starts with the stock 3b flange.

Rich

Feb 17, 2004 | 11:29 AM

TripleBlackS6

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One thing I still can't live with is the lack of...

torque in low rpm's. Every car I've owned so far could be rushed out of U-turns in 2nd gear. Try that in my S6 and what happens is... nothing! It takes 10 seconds to regain speed. I know I should chip it, de-cat it and perhaps get some bazooka downpipe like that, but until my wallet recovers from new wheels, tires, samco's and a lot of other little mods, I'll just have to practice downshifting to 1st gear!