Low boost after delete ?
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Elder User
Joined: Dec 2012
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From: Magnolia, TX
Low boost after delete ?
Just deleted my truck. SCT X4 with custom tunes from Rudy’s diesel. No limit block off plates and race pipe. Only had it done for a couple days. Noticed more smoke than I thought should be normal after a delete. Btw, I’m running tow tune.
Called Rudy’s for advice, and they say you’ve probably got a boost leak. So, I take it out and romp on the pedal and only get about 21 psi boost.
Used to get 30 pre delete. I’ve checked my block off plate and the cold side CAC tube (which I replaced a couple months ago with metal tube from Rudy’s) and all seem fine. Any ideas? I should still be getting at least 28-30 pounds of boost, shouldn’t I? Thanks for any help.
Called Rudy’s for advice, and they say you’ve probably got a boost leak. So, I take it out and romp on the pedal and only get about 21 psi boost.
Used to get 30 pre delete. I’ve checked my block off plate and the cold side CAC tube (which I replaced a couple months ago with metal tube from Rudy’s) and all seem fine. Any ideas? I should still be getting at least 28-30 pounds of boost, shouldn’t I? Thanks for any help.
Postmaster
Joined: Nov 2003
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From: Utah County, UT
Running their tow tune I see 27psi still. I have a 16 with blocked off egr, just removed single tube and replaced with blank on egr and egt probe for manifold. I have only seen visible smoke once on a right turn. This was very minor, significantly less than my 7.3 would. Either plate on manifold is leaking, may try new gasket, or EGR valve doesn't seal could be a possible cause as well. Just thinking out loud. Perhaps pic of your install?
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Elder User
Joined: Dec 2012
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From: Magnolia, TX
Thanks for the info. I’ll double check (again) all the plates and gaskets. I’m starting to think maybe it’s the EGT plate? The adapter fitting for the pyro didn’t go in very far.
Lead Driver
Joined: Sep 2006
Posts: 5,665
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From: Cartersville, Ga
Did you stay with the factory air intake? Is the MAF sensor fully seated and connected back proerply?
Just running through the things I've seen.
Did you install a temp sensor in the block off plate? If so, which one?
Just running through the things I've seen.
Did you install a temp sensor in the block off plate? If so, which one?
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Elder User
Joined: Dec 2012
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From: Magnolia, TX
Originally Posted by UGA33
Did you stay with the factory air intake? Is the MAF sensor fully seated and connected back proerply?
Just running through the things I've seen.
Did you install a temp sensor in the block off plate? If so, which one?
Just running through the things I've seen.
Did you install a temp sensor in the block off plate? If so, which one?
I’m thinking my cold side CAC tube connector (Rudy’s upgrade) may be the problem. It’s got some wiggle to it as well. I think I’m going to try a new o ring and ring clamp.
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Lead Driver
Joined: Sep 2006
Posts: 5,665
Likes: 164
From: Cartersville, Ga
A leak at the IAT2 sensor would cause your issue. I've also heard of that sensor being backwards causing issues like yours.
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Elder User
Joined: Dec 2012
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From: Magnolia, TX
Originally Posted by UGA33
A leak at the IAT2 sensor would cause your issue. I've also heard of that sensor being backwards causing issues like yours.
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