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Minotaur Automotive Tuning Software
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  #1  
Old Fri, April 16th, 2010, 11:37 AM
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Well my issue is that I am running injectors that are roughly 3 times as big as stock injectors, and can deliver this fuel in about half the time. Because of the faster delivery rate I do not want to add any more timing to reduce smoke. The other part of the problem lies in the injector nozzles being so large, I loose atomization, and the only way to get this back is to increase ICP. I am not sure how to add any more ICP without any negative side affects, like I am experiencing now.
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Old Fri, April 16th, 2010, 01:49 PM
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Damn it.........I think I finally realized what I did wrong.

If I quit thinking about it then all of a sudden it pops into my head.
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Old Fri, April 16th, 2010, 05:35 PM
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Quote:
Originally Posted by 907dave View Post
Damn it.........I think I finally realized what I did wrong.

If I quit thinking about it then all of a sudden it pops into my head.

It's funny you mentioned that. I was going to give you a "pop quiz" based on the questions you asked in the previous post.

ALL RIGHT!!!
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
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Old Fri, April 16th, 2010, 05:37 PM
thedieselguru thedieselguru is offline
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Well don't keep us in suspence, man?
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Old Fri, April 16th, 2010, 10:16 PM
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Actually I realized that in that particular program I was a little more aggressive with the Base SOI map in the light throttle ranges.

I switched back to a program with the same PW map with the easier timing curve and the slow speed issue went away but.............I still have the rolling idle.


Sooooo quiz away..........pleeeaaassseee.
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Old Fri, April 16th, 2010, 11:13 PM
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What is your minimum IPR duty cycle parameter? What is commanded in the base IPR map? What effect does the ICP have on your PW?
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
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Last edited by cleatus12r; Sat, April 17th, 2010 at 12:48 AM. Reason: I got my maps backwards.....
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Old Fri, April 16th, 2010, 11:29 PM
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Min IPR Duty% Parameter is 4.98%

Duty Cycle Maps says should be around 4.5% @ level 20 on the Regulator Flow (which I am not sure what that really is).

As PW drops ICP goes up.........right?
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Old Fri, April 16th, 2010, 11:34 PM
thedieselguru thedieselguru is offline
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Just to be curious, what's the fuel pressure in heads under load? Those injectors have got to tax a lift pump pretty hard.
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Old Fri, April 16th, 2010, 11:35 PM
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Fuel pressure is not an issue as I am pushing close to 140 gph @ 60 psi through the heads at all times.
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