Well I think it's safe to say my Cam...

Stroked777

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Do you know the cam specs or did Matt have the specs? Also what was the RPM range it was rated for? Might just need to have Matt tweak the tune.

The came specs are in my sig, I remember telling him the specs on the cam(basically copy and pasted my sig to him) but ill talk to him about it again
 

madman1234509

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This hissing is normal. Both my trucks have done it. Its got to to with the VGT set up, and my 08 didnt have an egr pipe to leak from.
 

Gearhead

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I would guess with stock turbos the boost to bp ratio may be getting skewed. Anytime you improve the volumetric efficiency of the engine it creates different requirements for the turbo system. Just a Wag, but the small chargers may be out of their efficiency ranges. Just like a motor with more cubic inches, it requires more airflow for the same basic rpm range. When i designed my 7.3 cams i made sure to look at the valve events and not just the duration numbers. My cams don't add overlap over stock to prevent chamber contamination when both valves are open and drive pressure is higher than boost pressure.
 

Fast-6.0

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I didn't read the whole post just the first page but here is my story. I bought a cam from a diesel company when I was having my engine rebuilt. The people rebuilding it profiled the cam, had it checked out to make sure it would work with my diesel engine, and the results were not good. The camshaft was made like a camshaft for a high revving gasoline engine. It was no good at making power in the range that diesels make their power. I think this is a problem a lot of companies are having. They are getting people to manufacture their camshafts that are used to doing cams for gas engines and don't understand the way diesels work and where their powerband is an such. I don't think its the companies fault that's having them made it just the lack of knowledge of the camshaft manufactures that are making them. Anyways I did not use that camshaft and had a custom camshaft made from a company that understands diesel engines and made me one that would work in my rpm range. Just my story.

So that's why you sent it back. LOL The EDE stage 1 cam is almost identical to the Colt Cam. Each is barely larger than stock. The cam Bigr has had excellent luck with was the same grind as the cam you returned.
 

Stroked777

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I would guess with stock turbos the boost to bp ratio may be getting skewed. Anytime you improve the volumetric efficiency of the engine it creates different requirements for the turbo system. Just a Wag, but the small chargers may be out of their efficiency ranges. Just like a motor with more cubic inches, it requires more airflow for the same basic rpm range. When i designed my 7.3 cams i made sure to look at the valve events and not just the duration numbers. My cams don't add overlap over stock to prevent chamber contamination when both valves are open and drive pressure is higher than boost pressure.

So what would have to be changed with the tuning in your opinion? I'll have to do some highway runs later and see what boost and bp valves are
 

LovinPSDs

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Is there a cam that would drive the low end stronger?? I'm not a big peak power, higher rpm kinda guy as much as I want my truck to pull from a dig, and be useable hp.
 

Gearhead

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So what would have to be changed with the tuning in your opinion? I'll have to do some highway runs later and see what boost and bp valves are

get some turbo and make another 100hp would be the best way to fix it.
 

madman1234509

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I honestly dont think there is much tuning that is going to make a difference with a stock re grind cam. Maybe something agressive with valve reliefs and what not
 

Stroked777

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well going down the highway in 5th tc locked i got into it and i hit a max psi of 45psi and ebp maxed out at 53psi if that means anything, that was on hot setting with econ shift strategy
 

bigrpowr

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well going down the highway in 5th tc locked i got into it and i hit a max psi of 45psi and ebp maxed out at 53psi if that means anything, that was on hot setting with econ shift strategy

deducting barometric that puts your bp at 39 ... thats crazy low for 45 psi . if its true either

A.) its making awesome power or,
B.) dont trust reading. maybe EBP sensor is trash ?
 

gman1

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deducting barometric that puts your bp at 39 ... thats crazy low for 45 psi . if its true either

A.) its making awesome power or,
B.) dont trust reading. maybe EBP sensor is trash ?

Looks like hes using a mini max. So what he is reading is what he is getting for EBP.
 

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