This item has been shown 2058 times.
Click HERE for more information about this part.
ARD High Flow Exhaust ManifoldsThings we & others have noticed with these high flowing manifolds was Improved throttle response, improved spoolingcharacteristics, overall power especially in the later part of the rpm range, drastically less engine bay heat do to the thick wall free flowing manifold design.
Constructed just like our GT manifolds but log style using schedule 10 304 Stainless, wall thickness of 1/8th inch, fully Tig welded, back purged & now equipped with EGT ports.Runner ID is 1.50" throughout & the factory 2.7ltr exhaust ports are 1.47".
Test has shown the factory manifolds start to show signs of back pressure well before 1 bar while these have been tested past 60lbs with very little to no signs.
We & others have inspected countless factory manifold failures. You can't notice the factory manifold failure by doing a simple visual inspection because the runners are wrapped around a shell welded over the runners "Very smart Audi" I have several factory broken manifolds sitting here. Just simply shaking them you can hear the broken metal rattling inside them.
We gave Vast Performance this design years ago & they were mostly successful but they did have a couple failures (UNDER 3%) primarily do to they're improper welding techniques & poor flange design.
We've been building these style manifolds with this material for 14 yrs & haven't seen a failure yet.Not to say it can't or won't ever happen as there's several reasons on why amanifold can fail..The end user or the car/build can have a lot to do with amanifold failure.
(sale is for 1 set of Exhaust Manifolds & Exhaust manifold gaskets) Note..... Right now you can buy them direct on & get free shipping in the USA & free gaskets
The last picture in the gallery is there to represent the quality of our work.(Life time warranty on workmanship against cracking)
Similar 1/4 mile timeslips to browse:
1999 Audi S4 B5 5cyl: 9.400 @ 154.000
Ohman Racing, Engine: I5, Turbos: Schwitzer S400 Tires: Hoosier
1998 Audi S4 Killer: 9.458 @ 157.670
Oz, Engine: 2.7, Turbos: Mitsubishi custom Tires: hoosier
1998 Audi S4 Killer: 9.506 @ 154.800
Oz, Engine: 2,7, Turbos: precision turbo Tires: hoosier
1998 Audi S4 Killer: 9.710 @ 150.000
Oz, Engine: 2.7 Biturbo, Supercharger: --------- Turbos: GT28RS Tires: drag slick hoosier
1998 Audi S4 Killer: 9.930 @ 142.000
Oz, Engine: 2.7 biturbo, Turbos: GT28RS Tires: street legal 255/35/18
2000 Audi S4 : 10.512 @ 137.560
GURUMAN, Engine: 3.01L, Turbos: gt28RS x 2 Tires: BF drag radials
2000 Audi S4 : 10.647 @ 134.320
GURUMAN, Engine: 3.01L, Turbos: GT28RS
2000 Audi S4 : 10.677 @ 132.730
10SecS4, Turbos: OEM RS4
2000 Audi S4 Quattro: 10.734 @ 132.760
10SecS4, Engine: Bone Stock, Turbos: OEM RS4 K04s Tires: BFG DRs up front, Hoosier DRs in the back
2000 Audi S4 : 10.900 @ 131.350
GURUMAN, Engine: 3.01L, Turbos: GT28RS
2000 Audi S4 : 11.053 @ 128.150
Marc, Engine: Stock 2.7 DOHC V6 TT, Turbos: Twin K04 Tires: BFG G Force Drag Radial 225/45/17
2001 Audi S4 JHM Stage 3: 11.191 @ 130.723
Jason Harbinson, Engine: 2.7 Twin Turbo V6, Turbos: K04s (unmodified except adjusted waste gates) Tires: 225/40/R18 Kuhmo MX
2000 Audi S4 : 11.206 @ 122.660
that guy, Engine: stock, Turbos: OEM RS4 Tires: 235/40/18 Kumho Ecsta MX
2001 Audi S4 : 11.426 @ 122.055
Jason Harbinson, Engine: 2.7t stock, Turbos: K04s (unmodified)
2001 Audi S4 Single Turbo CEA 6266 T4: 11.436 @ 128.490
Oleg, Engine: 2.9, Turbos: Precission CEA 6266 T4 .68 A/R Tires: 235/45/17
1992 Audi S4 5cyl 20V Turbo: 11.453 @ 121.620
Eirikur B. Runarsson, Engine: 2.6 L, Turbos: Turbonetics GT-K 550 Tires: Toyo Proxes T1-R
2000 Audi S4 : 11.490 @ 126.900
GURUMAN, Engine: 2.8, Turbos: GT28Rs Tires: Pirelli Corsa
2001 Audi S4 JHM Stage 3: 11.510 @ 125.700
Jason Harbinson, Engine: 2.7T, Turbos: K04s (plain) Tires: 225/45R18 Kuhmo MX street tires
2000 Audi S4 : 11.513 @ 120.960
Marc, Engine: 2.7L Twin Turbo V6, Turbos: Stock RS4 K04s Tires: 225/45/17 BFG G Force Drag Radials
2000 Audi S4 R650 kit: 11.556 @ 126.980
Chris Tapp, Engine: stock w/rod upgrade, Turbos: TiAl R650 kit Tires: toyo 4s