HPTuner arrived. Question
01-25-2005, 02:49 PM
#51
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The 15-105 thing... Thats "dynamic cylinder air"........or how much air the motor is pulling in in grams per cylinder...
I don't know what those values are in the IFR table. 0 vac through 80 vac. I guess you'd look at what your MAP is reading and correlate between the two?
I don't know what those values are in the IFR table. 0 vac through 80 vac. I guess you'd look at what your MAP is reading and correlate between the two?
01-25-2005, 02:54 PM
#52
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Originally Posted by Flyer
Lower the injector flow rate a little. Make little steps, about .5 if your using the Standard measurements, or .10 if your using imperial units.
Do I adjust all of the 17 different numbers by .5 then log, or do them 1 at a time
24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8
01-25-2005, 03:42 PM
#54
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Actually, by .5 would be a HUGE change. It would make your PCM thing you were running 12lb/hr injectors...
(EDIT - Sorry, I thought you were going to MULTIPLY by .5!! Just subtracting .5 would not be a problem at all.)
Mine are similar injectors (24.something), I had them scaled down by like 94.6%... so I had them multiplied by something like .946.... which had the system thinking they were about 23.8lb/hr.
My fuel system is different from yours (returnless or something like that), so I'm running a "non linear" IFR table, but here is my data:
22.57 22.69 22.88 22.94 23.07 23.25 23.44 23.56 23.62 23.81 24 24.12 24.18 24.55 24.68 24.93 25.05
(EDIT - Sorry, I thought you were going to MULTIPLY by .5!! Just subtracting .5 would not be a problem at all.)
Mine are similar injectors (24.something), I had them scaled down by like 94.6%... so I had them multiplied by something like .946.... which had the system thinking they were about 23.8lb/hr.
My fuel system is different from yours (returnless or something like that), so I'm running a "non linear" IFR table, but here is my data:
22.57 22.69 22.88 22.94 23.07 23.25 23.44 23.56 23.62 23.81 24 24.12 24.18 24.55 24.68 24.93 25.05
01-25-2005, 05:06 PM
#55
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Originally Posted by gamedawgx53
speaking of the IFR table
whats "verticle" along the left side 15 thru 105 in the histogram (LTFT)
...is that the #s that correlate with the 0 thru 80VAC found in editor?
and if so anything above 80VAC is dealt with here correct?
Engine>Fuel>Power Enrich>PE Enrichment>V8 Mult vs. RPM
whats "verticle" along the left side 15 thru 105 in the histogram (LTFT)
...is that the #s that correlate with the 0 thru 80VAC found in editor?
and if so anything above 80VAC is dealt with here correct?
Engine>Fuel>Power Enrich>PE Enrichment>V8 Mult vs. RPM
The g/cyl is for timing/retard histograms (still on the left column).
The LTFT histo correlates to the VE table.
01-25-2005, 05:07 PM
#56
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Originally Posted by 900Z1
Do I adjust all of the 17 different numbers by .5 then log, or do them 1 at a time
24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8
24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8 24.8
01-25-2005, 05:31 PM
#57
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I made 2 more logs..Did the subtract .5 on each log. Last log had some in the
red (+9 ) so it came down some, I noticed 7* KR while logging the last time
the time before that it had 4*KR.
Ate a bowl of soup all day yesterday and 1 sandwitch today. If it takes me
very long to tune I'll be a skinny little bastard.
Might take a day or two off so my eyes can uncross.
red (+9 ) so it came down some, I noticed 7* KR while logging the last time
the time before that it had 4*KR.
Ate a bowl of soup all day yesterday and 1 sandwitch today. If it takes me
very long to tune I'll be a skinny little bastard.
Might take a day or two off so my eyes can uncross.
01-26-2005, 08:37 AM
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You could just change the fuel and timing advance tables ABOVE 2400rpms.
In the fuel part add .75(since you've already taken away .5) and up the timing to 30* max starting at 3200rpms. This will give you pretty much stock tables for low part throttle, but when you hammer it it'll jump to the next higher part of the table and run like crazy. If your KR increases when you pull fuel, try keeping that timing first and add fuel to match it. If that doesnt work you may have to pull some timing.
In the fuel part add .75(since you've already taken away .5) and up the timing to 30* max starting at 3200rpms. This will give you pretty much stock tables for low part throttle, but when you hammer it it'll jump to the next higher part of the table and run like crazy. If your KR increases when you pull fuel, try keeping that timing first and add fuel to match it. If that doesnt work you may have to pull some timing.
01-27-2005, 06:03 AM
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Slowly learning. Finding out there is more fuel at the TQ curve and less at the HP curve.
I knew there was a curve back in my mind, but never thought about it when I
started with HPTuners
There is light at the end of the tunnel, but It's a long ways off. At least I can see the light. Much better than it was 2 days ago.
Figure in a week or so I will have a tune that works good.
Just can't spend all day on it. Got to get ready for son's homecoming party.
Thanks to marc_w,FLYER, Chris and all others that helped.
John
I knew there was a curve back in my mind, but never thought about it when I
started with HPTuners
There is light at the end of the tunnel, but It's a long ways off. At least I can see the light. Much better than it was 2 days ago.
Figure in a week or so I will have a tune that works good.
Just can't spend all day on it. Got to get ready for son's homecoming party.
Thanks to marc_w,FLYER, Chris and all others that helped.
John