Where's the boost??
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Bandaid dude
Joined: Apr 2004
Posts: 95
Likes: 0
From: Lincoln, CA
Where's the boost??
OK after searching here I'm lost.
I just got into a late 99' 7.3. It has a Bank's 6 gun stacked with a level 3 Banks chip. New BD turbo with wheel and WG, BD turbo back exhaust, Bank's Trans Commander, and Bank's CAI..I would think this should be developing no less than 25 psi of boost if not more..The max I get is 15 psi.
I've adjusted the WG..nothing..dis connected the WG nothing..tighten all IC hoses..nothing...looked at exhaust cross over..tight, no soot. still 15 PSI..It runs great, pulls strong..not a hint of black smoke so I know I'm not getting the boost I should be.
Where should I look next?? If I had the cash..I would dump the Banks and get hooked up with DP but that's not in the cards yet..This set up should produce..So, "Where's the boost"??
Thanks in advance
I just got into a late 99' 7.3. It has a Bank's 6 gun stacked with a level 3 Banks chip. New BD turbo with wheel and WG, BD turbo back exhaust, Bank's Trans Commander, and Bank's CAI..I would think this should be developing no less than 25 psi of boost if not more..The max I get is 15 psi.
I've adjusted the WG..nothing..dis connected the WG nothing..tighten all IC hoses..nothing...looked at exhaust cross over..tight, no soot. still 15 PSI..It runs great, pulls strong..not a hint of black smoke so I know I'm not getting the boost I should be.
Where should I look next?? If I had the cash..I would dump the Banks and get hooked up with DP but that's not in the cards yet..This set up should produce..So, "Where's the boost"??
Thanks in advance
Butt-Head
Joined: Apr 2004
Posts: 9,414
Likes: 2,910
From: Reed Point, MT
Originally Posted by RallyMedik
Where should I look next?? If I had the cash..I would dump the Banks and get hooked up with DP but that's not in the cards yet..This set up should produce..So, "Where's the boost"??
Thanks in advance
Thanks in advance
Changing tuning IS NOT going to increase your boost substantially regardless of who you decide to use for tuning. Banks products run well and if you like the way the truck runs and drives, why spend needlessly on something that may or may not be better? If you just want smoke and boost, then I cannot (and will not) help you here. Tuning will not fix a mechanical problem.
If you do a search for "low boost" or just "boost", you will find COUNTLESS threads on the subject (and most of them you find will be identical to yours). Some good information (and TONS of not-so-good information) can be found if you just search a little bit.
Thread Starter
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Bandaid dude
Joined: Apr 2004
Posts: 95
Likes: 0
From: Lincoln, CA
I hear ya on the boost level..I'm just trying to figure why I have low boost..and from what I have read..the BD turbo I have is not stock..I have instant power, no lag at all. I'm wondering if I just have a bad sensor sending bad info to the Boost gauge (The boost gauge is incorporated into the 6 gun tuner so it is not a mechanical gauge).
I just want to get it right, to where I can dial it down and have the waste gate working properly which to me seems like its not even seeing the boost to work correctly.
Trust me, I have read and read on here and other sites, and just can't find what's causing this issue.
Thanks for the read
I just want to get it right, to where I can dial it down and have the waste gate working properly which to me seems like its not even seeing the boost to work correctly.
Trust me, I have read and read on here and other sites, and just can't find what's causing this issue.
Thanks for the read
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
I hear ya on the boost level..I'm just trying to figure why I have low boost..and from what I have read..the BD turbo I have is not stock..I have instant power, no lag at all. I'm wondering if I just have a bad sensor sending bad info to the Boost gauge (The boost gauge is incorporated into the 6 gun tuner so it is not a mechanical gauge).
I just want to get it right, to where I can dial it down and have the waste gate working properly which to me seems like its not even seeing the boost to work correctly.
Trust me, I have read and read on here and other sites, and just can't find what's causing this issue.
Thanks for the read
I just want to get it right, to where I can dial it down and have the waste gate working properly which to me seems like its not even seeing the boost to work correctly.
Trust me, I have read and read on here and other sites, and just can't find what's causing this issue.
Thanks for the read
OR... I could be full of prune juice and your sensor is having issues, like you suspect.
Thread Starter
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Bandaid dude
Joined: Apr 2004
Posts: 95
Likes: 0
From: Lincoln, CA
So how are other guys getting readings from there map sensor able to see higher numbers?? If I'm fooling the PCM am I also fooling my wastegate?? It make's sense but doesn't..why would Banks make a tuner that doesn't give you accurate boost readings (it has a built in gauge)??
Butt-Head
Joined: Apr 2004
Posts: 9,414
Likes: 2,910
From: Reed Point, MT
I'm fairly certain that the 6-gun doesn't get it's boost data from the PCM though. My intuition tells me that it's similar to the older Edge Attitude display that has a separate inline wiring harness that plugs into the MAP sensor and the factory harness wiring.
The only TRUE way to get a real boost reading is with a mechanical or electronic analog gauge that is plumbed directly into the positive pressure side of the intake tract.
The only TRUE way to get a real boost reading is with a mechanical or electronic analog gauge that is plumbed directly into the positive pressure side of the intake tract.
New User
Joined: Aug 2010
Posts: 23
Likes: 0
From: Lacombe, Alberta, Canada
So how are other guys getting readings from there map sensor able to see higher numbers?? If I'm fooling the PCM am I also fooling my wastegate?? It make's sense but doesn't..why would Banks make a tuner that doesn't give you accurate boost readings (it has a built in gauge)??
Before you spend a bundle, get another gauge, and verify that your boost pressure gauge is telling you the truth, or not.
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Butt-Head
Joined: Apr 2004
Posts: 9,414
Likes: 2,910
From: Reed Point, MT
After a couple minutes of Google digging:
Page 8...
Yep, inline harness connectors.
http://assets.bankspower.com/manuals...454-v8-web.pdf
Page 8...
Yep, inline harness connectors.
http://assets.bankspower.com/manuals...454-v8-web.pdf
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Thread Starter
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Bandaid dude
Joined: Apr 2004
Posts: 95
Likes: 0
From: Lincoln, CA
After a couple minutes of Google digging:
Page 8...
Yep, inline harness connectors.
http://assets.bankspower.com/manuals...454-v8-web.pdf
Page 8...
Yep, inline harness connectors.
http://assets.bankspower.com/manuals...454-v8-web.pdf
Butt-Head
Joined: Apr 2004
Posts: 9,414
Likes: 2,910
From: Reed Point, MT
Well, the nice thing about the 99-03 trucks is that the MAP sensor is a variable resistance sensor (unlike the pre-99 Ford vehicles that use a frequency-based sensor output) so if you have "mad skillz" in operating a DVOM (set to the volts DC scale), you should be able to test output based on pressure (how you wish to pressurize the system/sensor is up to you).
Remember, the pressure values are absolute:
11 = 1.1 volts
14.7 = 1.5 v
20 = 2.2 v
25 = 2.8 v
30 = 3.6 v
35 = 4.3 v
Remember, the pressure values are absolute:
11 = 1.1 volts
14.7 = 1.5 v
20 = 2.2 v
25 = 2.8 v
30 = 3.6 v
35 = 4.3 v
Thread Starter
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Bandaid dude
Joined: Apr 2004
Posts: 95
Likes: 0
From: Lincoln, CA
Mad skills..Yea right HA!
This is my next approach
1) Pressurize system and check for leaks..The thing is CLEAN no visual leaks noted..but who knows.
2) Check adjustment of Wastegate (anyone know how to do this?)
3) Find someone with same truck and swap Map sensor
This is my next approach
1) Pressurize system and check for leaks..The thing is CLEAN no visual leaks noted..but who knows.
2) Check adjustment of Wastegate (anyone know how to do this?)
3) Find someone with same truck and swap Map sensor
New User
Joined: Aug 2010
Posts: 23
Likes: 0
From: Lacombe, Alberta, Canada
Good thought, echoes what I said earlier
Thread Starter
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Bandaid dude
Joined: Apr 2004
Posts: 95
Likes: 0
From: Lincoln, CA
I wasn't thinking like that earlier..I was thinking of grabbing boost from somewhere else. Make's more sense to T into it!
We will move that to 1st on list. Thanks!!