Calling all experts
Postmaster
Joined: Sep 2010
Posts: 3,472
Likes: 2
From: Southern Cal
Since you have a Dashboss, here's my numbers for comparison.
Keep in mind that the Dashboss measures Ebp's in psi, not hg's of mercury. The conversion is about 33.5 hg's. They should all 3 be relatively close with koeo.
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Fleet Mechanic
Joined: Jan 2012
Posts: 1,668
Likes: 13
From: Saskatchewan
Ok sounds good. First thing I will do is return to stock then post my numbers. Thanks. Will my SCT tuner show these sensor values? Should right and I will have it plugged in anyways.
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Fleet Mechanic
Joined: Jan 2012
Posts: 1,668
Likes: 13
From: Saskatchewan
So now with the stock tunes it won't break 28psi? Is the overboosting all in my tunes? Can I get a tune just for the EGR delete and tranny shift points? The engine light hasn't come back on yet for the EGR but I'm sure it will.
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Fleet Mechanic
Joined: Jan 2012
Posts: 1,668
Likes: 13
From: Saskatchewan
So it turns out I can run just the trans tune and egr delete but now the boost is back up a little. Like 30-32psi. I'm not sure why it would be. Is this just they way they are? Either have to much boost or your CEL coming on because of the EGR delete. Grrrr.
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Fleet Mechanic
Joined: Jan 2012
Posts: 1,668
Likes: 13
From: Saskatchewan
So when I say it will overboost I don't mean every time I nail the throttle. 1-2-3 and it will sit between 25-28psi if my foot is on the floor it's when I back out and the rpms drop in the higher gears is when it will spike up. Also I did remove the throttle plate and it didn't seem to change anything.
Lead Driver
Joined: May 2014
Posts: 6,545
Likes: 13
From: Virginia Beach VA
VTG should be near 80% at idle. A tune will fool the trucks PCM into thinking it's at 28lbs boost. A real gauge will show you what your seeing, higher boost. Also why they say to be careful unless your studded. Higher HP needs higher boost and more fuel.
An over boost of more than 4lbs for more than 5 seconds will set a code and possibly the wrench.
During the over boost, the vanes could be sticking a little, possibly you need to clean the turbo.
An over boost of more than 4lbs for more than 5 seconds will set a code and possibly the wrench.
During the over boost, the vanes could be sticking a little, possibly you need to clean the turbo.
Thread Starter
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Fleet Mechanic
Joined: Jan 2012
Posts: 1,668
Likes: 13
From: Saskatchewan
VTG should be near 80% at idle. A tune will fool the trucks PCM into thinking it's at 28lbs boost. A real gauge will show you what your seeing, higher boost. Also why they say to be careful unless your studded. Higher HP needs higher boost and more fuel.
An over boost of more than 4lbs for more than 5 seconds will set a code and possibly the wrench.
During the over boost, the vanes could be sticking a little, possibly you need to clean the turbo.
An over boost of more than 4lbs for more than 5 seconds will set a code and possibly the wrench.
During the over boost, the vanes could be sticking a little, possibly you need to clean the turbo.
Thread Starter
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Fleet Mechanic
Joined: Jan 2012
Posts: 1,668
Likes: 13
From: Saskatchewan
Yes in fourth it will get close to 30psi and yes after it locks up that seems to be the worst. It will spike up to just over 30-32psi ish. Hard to tell at that speed without crashing. Lol.