New video posted below

I have finally finished the true duals project for my 1995 Z28. The entire system is stainless steel and was made from Magnaflow mandrel bent pipes.

Here are the specs:
Flowmaster 3" to 2.5" reducer cones
Magnaflow stainless (5) J-bends, (4) L bends and (1) 45 degree bend
Woolf aircraft (2) 2.5" ultra tight radius L bends
Magnaflow dual in/out (internal X) muffler
Magnaflow X-pipe
Magnaflow stainless dual oval tips
Dynomax stainless cutouts
QTP electric cutouts
Lots of stainless Accu-seal clamps

I designed the cutout pipes to be easily removed and replaced with catalytic converters should the want or need ever arise. Takes about 30 minutes to do this. Also the whole thing can be easily removed rather easily just like a catback.

All pipes are stainless MIG welded and ground smooth for a seamless look. I polished the rear pipes exiting the muffler to a very shiny finish as well.

The exhaust sound is deep with absolutely no signs of rasp, popping or machine gun sounds in the 2K RPM range like what I had with the old Borla catback and ORY pipe. The sound volume at idle, as well as WOT, is similar to any other catback. Definitely not overly loud unless you open the cutouts. Maybe this is due to the Magnaflow X-pipe up front and the internal X-pipe in the muffler. The exhaust waves should certainly be balanced with this setup.

Ground clearance is outstanding with the lowest point being ~5" off the ground. This is on the pipes just before they go over the axle. I have yet to bang a pipe.

I also managed to reuse all the factory exhaust hanger points to secure the new system. I only had to custom make one new hanger, just in front of the axle as well as the pair at the tips. There are also stainless O2 bungs welded into each reducer for easy hookup to the wideband O2 at the dyno.

Thanks to everybody who offered help and advice with this project. I could not be happier with the final results.:chug:

Here are the pics of the system uninstalled:






Here are some installed pics:








Here is a shot from behind:


Click below for video:

 

Very nicely done!

 

That looks like some quality work and it sound great.

 

thats beautiful, what headers? I was thinking about doing something like that with my midlegths, but one of these days I will step up to some kooks LTs

 

Those are the LPP LT headers. They are near identical to the Kooks.

 

Sounds great....Looks great.... Nicely done!

 

Hot darn, son.

 

Awesome job! You should build more of these and sell them!

 

If I find myself out of a job any time soon. I am sure I will do this.

 

Holy crap on a cracker! I guess money and effort gives awesome results! Too friggin' cool!

 

very clean job....sounds good too

 

Fortunately, I got all the Magnaflow materials at cost. The Dynomax cutout pipes, the QTP e-cutouts and the Woolf tight radius L bends were regular mail order price price. This all added up to about $650.00 IIRC.

The cutouts and pipes were another $450.00 IIRC. Of course these are considered optional.

I managed to sell my Borla adjustable catback for $500 and two LPP ORY pipes for another $250. So you can see that went a long way in covering some of the expense of the TD's.

 

Wow, amazing job man. That's beautiful, love the sound.

 

Man that sounds great! Nicely done

 

I hate to bring up an old thread... but... Wow! Thats how it should have come from the factory! You should create a jig and sell those.