Wastegate Disabling
New User
Joined: Feb 2003
Posts: 12
Likes: 0
Hey Strjock81 ,
Thanks for the reply . I kinda figured that disabling the wastegate would allow the boost levels to go up without producing blowby but do we really need to exceed 22 psi ? How much more power can you expect by disabling the wastegate ?
Thanks for the reply . I kinda figured that disabling the wastegate would allow the boost levels to go up without producing blowby but do we really need to exceed 22 psi ? How much more power can you expect by disabling the wastegate ?
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
do we really need to exceed 22 psi
The primary benefit of disabling the wastegate is it allows the turbo to spool up quicker, so it will feel like you are making more power when in actuality you are not. You are just using what you already have more efficiently.
Senior User
Joined: Jul 2001
Posts: 352
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From: Palatka, FL
What I dont understand about disabling the wastegate is why would it ever be open at all under acceleration in the first place? I've done a few things to my truck and the check engine light comes on because I hit 26 pounds of boost, so I would assume that my wastegate is not opening as I accelerate and only while I decelerate. I also do not have an aftermarket chip or program to keep the wastegate closed.
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
If there are no drawbacks to doing this why is it wastegated in the first place
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.
What I dont understand about disabling the wastegate is why would it ever be open at all under acceleration in the first place?
Junior User
Joined: May 2003
Posts: 72
Likes: 0
SO
On a stock 03 PSD 7.3, what are the benny's of doing it.
What are the Draw backs of doing it.
On a stock 03 PSD 7.3, what are the benny's of doing it.
What are the Draw backs of doing it.
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Senior User
Joined: Feb 2003
Posts: 171
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From: Utah
I just bought a 2000 PSD on Monday, and on the way home from the dealer, the check engine light came on twice, both times under hard acceleration, and at fairly high RPMs. I checked the red line to the wastegate, and although it is hooked up, the rubber tube between what looks like a restrictor and the wastegate is in pretty poor shape. I wonder if high boost is what caused my light to come on? Any ideas?
I won't be able to do a scan till the 26th or so to see what the codes are.
I won't be able to do a scan till the 26th or so to see what the codes are.
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
Yep, that's what is called a "boost tube". It does basically the same thing as just unplugging it. Back in the earlier days of PSD performance several of the chip makers included a boost tube with their chips because they weren't yet aware of all the programming parameters available to them and that was the easiest way to get more boost.
Your truck likely has, or has had a chip in it.
Your truck likely has, or has had a chip in it.
Senior User
Joined: Feb 2003
Posts: 171
Likes: 0
From: Utah
So, if I have the boost tube, do you think I have a performance chip? Where is the ECU and how do I tell if it has a custom chip? I am familiar with the old EEC IV systems, but don't know what they put on the new ones.
Thanks,
Thanks,
Senior User
Joined: Feb 2003
Posts: 171
Likes: 0
From: Utah
OK. So the "chip" is attached to the access port, as opposed to replacing a PROM inside the computer? I have a GM computer on my 73 vette, and have to actually replace the EPROM inside the computer. Sounds like the Ford system is different.