Exhaust cutout make a difference on Cammed LT1??
I unbolted the cutout on my cammed lt1 today for the first time since I installed the cam and it made a noticible difference. I nticed more of a difference unbolting it with the cam than without.
BTW, I'm about to buy an electric valve for my cutout. Does anyone know if summit's electric valve is any good?
BTW, I'm about to buy an electric valve for my cutout. Does anyone know if summit's electric valve is any good?
Teching In
Joined: Apr 2006
Posts: 35
Likes: 0
From: North Platte, Nebraska
I gained just shy of 30 rwhp on mine, but I have a high flow cat right before the exhaust goes over the rear axle, was trying to tame the sound of my Borla down and keep the cutout in front of the cat. This is a S.O.T.P difference for sure.
Let's see a dyno graph of this because I'm calling B.S. 
I know a guy that gained a whopping 40hp between closed cutout and open cutout. He has a 6.0 block in his LS1 Trans Am and has a completely stock catback though. He ran 400hp with the cutout closed, 440 with it open.
Teching In
Joined: Apr 2006
Posts: 35
Likes: 0
From: North Platte, Nebraska
You're a douchebag! Same dyno, both runs, electric cutout. Read the post before making stupid comments. single cat before the rearend, I'm sure that slows flow. Not everyone would gain that much typically.
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Launching!
iTrader: (1)
Joined: Feb 2009
Posts: 205
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From: Undisclosed fight club underground
I thought 30 rwh seemed a little on the high side as well. I don't think some of these young kids realize what these "smiles" mean when someone puts them up. Elliott is far from a douchbag..he has been here for a long while and helped a lot of us out.
