Just wondering how much difference it makes.
Just wondering how much difference it makes.
0000000
I modified mine a long time ago, but now so when this manifold You won't see or feel the difference, but the restriction is so obvious that it just makes sense...
Kennedy Diesel-owner
More than just a salesman-I use and test the products that I sell on a daily basis!
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Thanks John, I am getting ready to order some gauges from you, I guess I'll get the manifold also. I won't have to drill the other one that way. I would think that the EGT's coming from the left side should be lower. Or at least read the same as the right side.
0000000
I would appreciate your assessment of the BD manifold after you install it (e.g. quiet and noticable difference).
1) '03 GMC 2500HD Dmax/Ali Ext/Short 4x4; 4" exhaust, egt and boost gauges; exhaust brake; Bilsteins; BD exhaust manifold; Oil Guard bypass; Lubrication pre oem fuel filter; Tekonsha Prodigy; Mag-Hytec differential cover; Suncoast V transmission w/deep oil sump
2) '07 Classic GMC 2500HD Dmax/Ali Ext/Short 4x4'; Bilsteins, Silastic shackles, BD exhaust manifold; Oil Guard bypass; Lubrication pre oem fuel filter; Tekonsha Prodigy; Federico sway bars; Dipricol boost and egt gauges; Transgo Jr,, Mag-Hytec differential and transmission pan
Hi Conway, I will let you know. It will be after Christmas before I get R Done.
Then I hope the new tunes are ready also.
0000000
R&R is easy. It has a port in it so no more worry about cracking the drilled manifold. I didn't see or feel a difference, but like John said, take a look and you will see the benefit. It is a cheap, easy, worthwhile mod. I bought all new gaskets, but some get away with reusing them.
Twin Turbo LLY
EFI Live Tuned by Me
11.8 @ 118+ 1/4 on #2 only
Thanks, I would really like to hear if anyone is running one with egt gauges in both manifolds. I had gauges on both manifolds of our 02, and the left side ran a little hotter, about 100 degrees more under load and climbed faster under load. If I was cruising and not pulling hard they would read the same.
I figured the higher reading was due to the restriction on the left.
0000000
Bobo:
Any increase in sound?
1) '03 GMC 2500HD Dmax/Ali Ext/Short 4x4; 4" exhaust, egt and boost gauges; exhaust brake; Bilsteins; BD exhaust manifold; Oil Guard bypass; Lubrication pre oem fuel filter; Tekonsha Prodigy; Mag-Hytec differential cover; Suncoast V transmission w/deep oil sump
2) '07 Classic GMC 2500HD Dmax/Ali Ext/Short 4x4'; Bilsteins, Silastic shackles, BD exhaust manifold; Oil Guard bypass; Lubrication pre oem fuel filter; Tekonsha Prodigy; Federico sway bars; Dipricol boost and egt gauges; Transgo Jr,, Mag-Hytec differential and transmission pan
No increase in sound on my LLY.
Twin Turbo LLY
EFI Live Tuned by Me
11.8 @ 118+ 1/4 on #2 only