Wastegate Disabling
Senior User
Joined: Sep 2003
Posts: 275
Likes: 0
From: Anderson, SC
Boss300,
You can easily kill the check engine light. Tap the middle wire on the MAP sensor using a T-tap. Run a wire from the T-tap to the ground strap on the firewall. This will ground out the signal before it reaches the MAP sensor.
You can easily kill the check engine light. Tap the middle wire on the MAP sensor using a T-tap. Run a wire from the T-tap to the ground strap on the firewall. This will ground out the signal before it reaches the MAP sensor.
Junior User
Joined: Dec 2002
Posts: 50
Likes: 0
From: Fernandina Beach
Any Help
Originally posted by Strjock81
If there are no drawbacks to doing this why is it wastegated in the first place....Thats what I can't seem to figure out.
If there are no drawbacks to doing this why is it wastegated in the first place....Thats what I can't seem to figure out.
Can I do this mod with the Diablo Predator chip in?
Or does the Chip do this for me?
Elder User
Joined: Aug 2003
Posts: 727
Likes: 0
From: Texas, just south of NY c
OK , let me see if I understand the situation correctly.....after reading ALL of the Posts. I disconnect the red vacuum line and remount it on a bolt approximately the same size. Next , since the the wastegate ....Doesn't open I going to get a "check engine lite" which will stay On....ALL the Time. Is that correct?? But, it really doesn't mean anything cause I know what caused it to come on in the first place. BUT...What happens if it stays on and ANOTHER problem develops which would trigger the lite ....with an ACTUAL Problem , but I won't KNOW that cause that lite is on continously because of the vacuum being unhooked.....Is, that going to be a problem or am i just worrying abount nothing here..???I'm all ears........s.kuteman
Senior User
Joined: Aug 2002
Posts: 274
Likes: 0
From: Taunton, MA
Yes and No
That is the correct way to disconnect the wastegate.
Your check engine light will not come on and stay on due to this.
Now if you have a chip or programmer, which makes more boost you might get the check engine to come on or flash when on it hard.This is because the MAP sensor sees more than 24psi.
That is the correct way to disconnect the wastegate.
Your check engine light will not come on and stay on due to this.
Now if you have a chip or programmer, which makes more boost you might get the check engine to come on or flash when on it hard.This is because the MAP sensor sees more than 24psi.
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
On mine, the check engine light comes on for a few minutes after a hard run, and then goes out again. I am assuming it is due to the boost
Next , since the the wastegate ....Doesn't open
Senior User
Joined: Nov 2003
Posts: 228
Likes: 0
From: Spring, TX
Originally posted by cookie88
There is also a possibility of excessive backpressure issues in the undersized exhaust housing, but that is a non-issue without much greater than stock fuel flow, or an exhaust brake.
There is also a possibility of excessive backpressure issues in the undersized exhaust housing, but that is a non-issue without much greater than stock fuel flow, or an exhaust brake.
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Senior User
Joined: Nov 2003
Posts: 165
Likes: 0
From: Illinois
FOr anyone concerned about your ses light coming on and your PCM defueling, there is a really neat little deal at this site that will take care of it cheaply and quickly--tricks sensor into believing that boost is staying down low where Ford wants it to be:
http://www.dieselsitetoo.com/subcat.asp?0=203
Actually this site has quite a few neat little deals....
http://www.dieselsitetoo.com/subcat.asp?0=203
Actually this site has quite a few neat little deals....
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
Strjock81
I had that valve for a while on my truck, it didn't react quickly enough alot of the time, and rarely worked at all in cold weather. Both the 4.7v Zener diode and the mini regulator work better.
HerbertKornfeld
No, you won't.
I had that valve for a while on my truck, it didn't react quickly enough alot of the time, and rarely worked at all in cold weather. Both the 4.7v Zener diode and the mini regulator work better.
HerbertKornfeld
No, you won't.
Senior User
Joined: Aug 2002
Posts: 274
Likes: 0
From: Taunton, MA
I also had that little valve on my truck for a while, and it rarely worked. Instead I got a mini regulator (for air compressors) at home depot, set to about 18psi, and threw it in. Never had a problem with the SES light since.
Nelson
Nelson
Elder User
Joined: Aug 2003
Posts: 727
Likes: 0
From: Texas, just south of NY c
I'd like to bring this issue too closure by making some kind of definitive statement to reassure those of us that would like to operate our trucks withOUT the w.gate interfering with normal operation of the Turbo.
Such as.......If the vacuum line is removed..(from the wastegate)... and the engine is completely stock , that the operation should not create any problems for the engine due to over-boost as the PCM has a upper limit preset of 20 psi at which time it will automatically start retarding the fuel supply which will also prevent an excess psi problem from developing with the factory exhaust system due to its limited diameter design from the factory.
Cookie 88 will you please evaluate my statement and edit and\or simplify where you feel it is necessary. Or rewrite to suit your own understanding of what I'm trying to say, thanks, s.kuteman
Such as.......If the vacuum line is removed..(from the wastegate)... and the engine is completely stock , that the operation should not create any problems for the engine due to over-boost as the PCM has a upper limit preset of 20 psi at which time it will automatically start retarding the fuel supply which will also prevent an excess psi problem from developing with the factory exhaust system due to its limited diameter design from the factory.
Cookie 88 will you please evaluate my statement and edit and\or simplify where you feel it is necessary. Or rewrite to suit your own understanding of what I'm trying to say, thanks, s.kuteman
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
Just a couple of small corrections.
1. It's a pressure line that controls the wastegate, not vacuum.
2. The SES light/defuel mode is set to 24 psi.
Rest easy, there is no danger involved with running the wastegate disconnected on an otherwise stock engine.
1. It's a pressure line that controls the wastegate, not vacuum.
2. The SES light/defuel mode is set to 24 psi.
Rest easy, there is no danger involved with running the wastegate disconnected on an otherwise stock engine.
New User
Joined: Jun 2003
Posts: 7
Likes: 0
From: Motor City
Great stuff, I have a couple of additional questions???
I put my boost gauge feed in the line that goes to the MAP, if you put the press relief in that line where are you reading boost?
I have Hypermax 330 chip and the full exhaust, current boost shows 20 PSI. Does the Hypermax chip change the waste gate set point?
I have 2002 7.3 PSD.
thanks for help
Brad
I put my boost gauge feed in the line that goes to the MAP, if you put the press relief in that line where are you reading boost?
I have Hypermax 330 chip and the full exhaust, current boost shows 20 PSI. Does the Hypermax chip change the waste gate set point?
I have 2002 7.3 PSD.
thanks for help
Brad
Senior User
Joined: Nov 2003
Posts: 228
Likes: 0
From: Spring, TX
I did this mod a couple of days ago. My wife says if I blow up my engine, I can't play with you guys anymore. So, I hope its ok.
I'm not sure I noticed much difference, although I don't really race around that much.
Any reason my engine would sound louder though?
I'm not sure I noticed much difference, although I don't really race around that much.
Any reason my engine would sound louder though?