Predator-Like performing an engine swap!
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Joined: Aug 2002
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From: Salem USA
Predator-Like performing an engine swap!
Finally hooked up my Predator tuned 5.4, F-250 to my 10xxx lb. 5er camper. Could not believe the performance!!! I have the five spd. manual and it had enough power that I felt like I was always in one gear lower than it actually was. After I installed the tune, I could tell some improvement but when I hooked to the trailer is when it really came into it's own. Thanks for all the great help selecting the Predator.
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New User
Joined: Aug 2002
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From: Salem USA
I initially went 93 octane and that's what I plan to tow with but I recently was getting ready to "performance tune" for 87 octane and put some 89 in and I'm not spark knocking at all. I may try 87 as per your experience but around here, I can buy 89 octane for the same price as 87. Thanks for the info...
Lead Driver
Joined: May 2003
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From: Lyndonville, Vermont
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Post Fiend
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From: Enjoying the real world.
Originally Posted by 99f350sd
Did you go to prem gas?? I hooked mine up tp my 99 and no pinging on reg gas..Truck feels good though.
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Post Fiend
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From: Enjoying the real world.
Timing is advanced an average of 3-8 degrees depending on a variety of driving conditions and factors (there are several items that are factored and calculated from various tables and scalers during driving).
Lead Driver
Joined: May 2003
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From: Lyndonville, Vermont
I know what you are saying Ken. I've been listening to pinging engines for 35 years. This one isn't and I'm wondering if I can use the predator to see if its working or not.
If I went into modify tune and adv the timing until I heard something that would be one way I suppose. What should I see when I go into Modify tune in the timing area's should it be in the center?
If I went into modify tune and adv the timing until I heard something that would be one way I suppose. What should I see when I go into Modify tune in the timing area's should it be in the center?
Post Fiend
Joined: Jan 1997
Posts: 23,165
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From: Enjoying the real world.
Okay. The Predator will not give codes for pinging per se, but you can use it to bump up the timing more. Take the timing up a notch at a time until it starts to ping (especially under load) on premium and then back it off one notch. That will be the setting for optimal power.
Lead Driver
Joined: May 2003
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From: Lyndonville, Vermont
I'm sure Diablo didn't do the programing tests on my date engine 3-3-98, they prob chose a 2000 or 2001 mine is 30 hp less than all the others maybe has less compression and less timing adv than the others so in the perf tune it won't ping on reg gas..Just a thought. I have been hauling heavy loads and it runs real good. I might increase the timing but on 87 and see if it will start to ping to see where i'm at.
Dick
Dick
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Joined: Oct 2004
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From: Seminole, FL
I have been modifying the Diablo Tune after talking with Brian at Diablosports. He pretty much agreed to bump it up until you hear a ping then back it off. I advanced it 2 deg at a time and drove it for at least a day. Today I went to 10 deg. advanced and still no pinging. I hooked up my trailer at about 3500# and still no pinging.
I don't understand spark advance very well. I thought my gas mileage had increased but just checked it today on a 3/4 tank fill up and mileage was down to 13.4 from about 14.5 on 87 octane and regular gas. I have been driving it hard playing with the shift and other parameters so this is part of it.
Will I get the best towing mileage with the spark advanced just below pinging? If that is the case will power suffer? I'm going to tow my trailer at about 5000# from FL to upper WV the week of Thanksgiving and would like to have it tuned for economy unless it costs mountain climbing power. Also, should I lean it a bit in the 2000-4000 foot mountains or will the computer still monitor and do it automatically?
Thanks
I don't understand spark advance very well. I thought my gas mileage had increased but just checked it today on a 3/4 tank fill up and mileage was down to 13.4 from about 14.5 on 87 octane and regular gas. I have been driving it hard playing with the shift and other parameters so this is part of it.
Will I get the best towing mileage with the spark advanced just below pinging? If that is the case will power suffer? I'm going to tow my trailer at about 5000# from FL to upper WV the week of Thanksgiving and would like to have it tuned for economy unless it costs mountain climbing power. Also, should I lean it a bit in the 2000-4000 foot mountains or will the computer still monitor and do it automatically?
Thanks