IP tuning
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Elder User
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From: South Dakota
IP tuning
I currently have my 1991 Ford F250 7.3IDI running all stock. I did install the "soup bowl" mod. I have yet to hear back about the Banks Sidewinder Turbo that I am interested in but I would like to know if I could turn up the injection pump a little even without the turbo? Probably not a good idea but my second question is how much should I turn it up if I do get the Banks system installed?
Post Fiend
Joined: Nov 2003
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From: Nutter Fort, WV
If you are seeing any black smoke at wide open throttle now, turning the pump up more will just waste fuel. Black smoke is the point that all available air in the cylinder is not enough for complete combustion. Also more fuel does introduce the possibility of excessive temps in the cylinders without a pyrometer to monitor them.
Turbos usually start at two flats more fuel than NA, but that also depends on how well the turbo is working. The true limit is either black smoke or excessive EGT that will cause engine damage.
A pyrometers is required to keep the EGT at reasonable levels to prevent meltdown.
A boost gauge is also a fine diagnostic tool for engine trouble and changes from the norm on a turbo motor.
Turbos usually start at two flats more fuel than NA, but that also depends on how well the turbo is working. The true limit is either black smoke or excessive EGT that will cause engine damage.
A pyrometers is required to keep the EGT at reasonable levels to prevent meltdown.
A boost gauge is also a fine diagnostic tool for engine trouble and changes from the norm on a turbo motor.
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Elder User
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From: South Dakota
I don't see any sort of smoke at wide open. Does this mean it is burning efficiently even when I put it to the floor?
If the Banks system I am looking into has a "fractured turbine" I am just gonna swipe the banks exhaust system and possibly the guages...even after those upgrades would it be possible to give the IP a little more? (I'm thinkin 1/2 a flat or less, maybe up to 1 flat)
If the Banks system I am looking into has a "fractured turbine" I am just gonna swipe the banks exhaust system and possibly the guages...even after those upgrades would it be possible to give the IP a little more? (I'm thinkin 1/2 a flat or less, maybe up to 1 flat)
Post Fiend
Joined: Nov 2003
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From: Nutter Fort, WV
You should be able to see a "LIGHT" trail of black smoke when you are at wide open throttle pulling a hill or load.
If you see no smoke at all, you could probably give it a 1/2 flat more fuel.
A little turn of the fuel screw makes a big difference in the amount of fuel injected.
Most people think well, he recommended 1 flat, so I am going for 2.
Then they have so much fuel that the black smoke looks like a tire factory is on fire.
ATS recommends 2 flats when installing their turbo.
AT 10 PSI boost the engine is getting almost twice the air that it gets as a NA motor at sea level. (14 PSI would be double)
I say this just for your information to consider as you adjust the fuel screw.
Also do not forget more fuel means more heat is produced in the cylinders.
If you see no smoke at all, you could probably give it a 1/2 flat more fuel.
A little turn of the fuel screw makes a big difference in the amount of fuel injected.
Most people think well, he recommended 1 flat, so I am going for 2.
Then they have so much fuel that the black smoke looks like a tire factory is on fire.
ATS recommends 2 flats when installing their turbo.
AT 10 PSI boost the engine is getting almost twice the air that it gets as a NA motor at sea level. (14 PSI would be double)
I say this just for your information to consider as you adjust the fuel screw.
Also do not forget more fuel means more heat is produced in the cylinders.
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Elder User
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From: South Dakota
I don't even see a light trail when I lay it down even with my small exhaust.Again, thanks for the tip Dave, I'm a little more cautious when it comes to my rig just for the fact that something can easily go wrong if you jump in head first. Thats why I continue to give you almost daily questions 
. You know the motto, "measure twice, cut once".
. You know the motto, "measure twice, cut once".
Last edited by Dave7.3; Jun 23, 2006 at 06:34 PM.
Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
Just make sure your next statement is not measured three times, cut twice and the board is still to short.
LMAO
I would give it a bit more fuel, but that is how I am.
Plus we do not have "Air Police" (emissions testers) here in WV.
When I shift gears the Macks are all jealous of my smoke.
LMAO
I would give it a bit more fuel, but that is how I am.
Plus we do not have "Air Police" (emissions testers) here in WV.
When I shift gears the Macks are all jealous of my smoke.
Last edited by Dave Sponaugle; Jun 23, 2006 at 07:30 PM.
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Elder User
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From: South Dakota
Its South Dakota over here...if they cared about emissions I sure would be surprized.
I can just imagine those Mack drivers cussin at ya now LOL
I can just imagine those Mack drivers cussin at ya now LOL
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Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 16
From: Nutter Fort, WV
I ate Mack smoke for years as they pulled off from a light, turn about is fair play.
Nicest thing about having the fuel cranked, when some jerk with high beams rides my rear bumper I just floor it. In a matter of seconds the high beams look like park lights in my west coast mirrors. When the smoke clears enough for them to see, I am not there any more.
They play games, I know even better games than they do.
Nicest thing about having the fuel cranked, when some jerk with high beams rides my rear bumper I just floor it. In a matter of seconds the high beams look like park lights in my west coast mirrors. When the smoke clears enough for them to see, I am not there any more.
They play games, I know even better games than they do.
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