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 Headers or downpipe?

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Name : Aaron
Age : 40
Location : C-bus, Ohio
Joined : 2007-01-13
Post Count : 18310
Merit : 239

PostSubject: Re: Headers or downpipe?   Tue Feb 10, 2015 6:43 pm

How did you disconnect the exhaust or fit the back primaries from the top side?

Here's a write-up, working from the bottom. It was nice having a friend to help from the top side.


'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch

'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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Sir Psycho Sexy

Name : Tyler
Age : 23
Location : Temperance, Michigan
Joined : 2012-06-22
Post Count : 948
Merit : 19

PostSubject: Re: Headers or downpipe?   Tue Feb 10, 2015 7:10 pm

I left the downpipe attached to the exhaust system and just reached in and bolted it back up to the rear header. I'm not sure... It worked lol maybe don't listen to me because I may not be thinking straight though.
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Name : Matt
Age : 21
Location : Frederick, MD
Joined : 2012-01-15
Post Count : 2677
Merit : 49

PostSubject: Re: Headers or downpipe?   Tue Feb 10, 2015 9:07 pm

The original downpipe design is easiest to do from the top and bottom. The passenger side bolt is easiest from up top, while the drivers side was easiest from the bottom (at least for me anyways).
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