Duster, I agree with John, you are very helpful in the DS forum but you need to stop trolling through Johns posts/threads. ,,,,,,,,,,,,,,You do have a point, its probably not worth paying much for.
Trust me, I don't go looking to correct all of John's misinformation. Sometimes he posts first sometimes I post first. Since we both post alot it happens.
I've done plenty of testing on different ways to raise MPG and the best way that gives consistant results involves manipulating the O2 feedback above stoich.
1) I garantee you 100% that killing the "Boost" through your Predator would give you similiar results as PTP bs "MPG tune".
2) I garantee you 100% that killing the "Boost" by disconnecting your WGA will give you similiar results as PTP bs "MPG tune".
3) I garantee you 100% that PTP bs "MPG tune" will NOT make any measureable improvemnt to MPG if you highway drive 90% or more of the time.
To all,
I don't make one cent off of Srt owners and have no motivation other than to protect others by exposing this snake oil scam for what it is.
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"Just because someone goes fast doesn't mean you should do whatever you think they did.
This path assumes they knew what they were doing, which isn't necessarily the case"..........RB Racing
Forcing the stock PCM to 15 or 16 AFR's causes all sorts of crap to go wrong with the tune. Keep it at the target 14.7 and mess with the other areas like timing and boost pressure.
We even tried to lower the TQ tables a bit and that worked really well, car is just slow as a turd.
maybe the DSP (stock ECU) is different but 15-16 A/F in low load is fine and wont reduce the power the ONLY reason stock dosnt do it is for emissions i wouldnt suggest anything higher than 60 KPA but for highway cruise W/ full on power @ WOT this is the only way to have your cake and eat it
G/L with the detune and reassigning MBT to the timing tables I would think that would hurt fuel economy remember at low load/low throttle blade there is so much EGR detonation is almost impossible, the lower A/F also slows the flame propagation so timing adjustments are unnecessary
just wanted to add, that if anything the MPG you gain will be minimal maybe 1-3mpg in cruise the best way to add mpg is to clean out the car get rid of any weight and fill the tires up to max psi for less rolling resistance, or go on a diet
the car is what it is there are some very technical ways to gain fuel economy but unfortunately our cars are a performance beast not an econo car and suck fuel as your right foot dictates :hint:
Trust me, I don't go looking to correct all of John's misinformation. Sometimes he posts first sometimes I post first. Since we both post alot it happens.
I've done plenty of testing on different ways to raise MPG and the best way that gives consistant results involves manipulating the O2 feedback above stoich.
1) I garantee you 100% that killing the "Boost" through your Predator would give you similiar results as PTP bs "MPG tune".
2) I garantee you 100% that killing the "Boost" by disconnecting your WGA will give you similiar results as PTP bs "MPG tune".
3) I garantee you 100% that PTP bs "MPG tune" will NOT make any measureable improvemnt to MPG if you highway drive 90% or more of the time.
To all,
I don't make one cent off of Srt owners and have no motivation other than to protect others by exposing this snake oil scam for what it is.
I guarantee if you spell it 6 more times you will still spell it wrong.
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Quote: Originally Posted by srt4moster
he is doing good, i make sure to play with him everytime im there.
Trust me, I don't go looking to correct all of John's misinformation. Sometimes he posts first sometimes I post first. Since we both post alot it happens.
I've done plenty of testing on different ways to raise MPG and the best way that gives consistant results involves manipulating the O2 feedback above stoich.
To all,
I don't make one cent off of Srt owners and have no motivation other than to protect others by exposing this snake oil scam for what it is.
My misinformation? Wow, how big is that horse you ride on everywhere you go?
Have you tried killing the WGDC, rasing the PT timing to match that of the WOT timing, then move the WOT inrichment volts up. Have you tried that? The magic of this whole thing is the WOT volts getting moved, this way you never move out of the 14.7 stoich, no matter how far you push your car, your going to consistantly run at 14.7 AFR's. That is where we get the gains in MPG from, I hope you have tried this.
Snake oil scam? Where??? I don't see anyone selling anything, I don't see anyone pushing a product, tune or other. What I do see is a member hell bent on making this something that its not and resorting to name calling of a reputable vendor. Duster, you have only exposed your negitive views about me and PTPerformance, to bad.... I think a lot of people figured you to be a better person than this, to bad for those people.
maybe the DSP (stock ECU) is different but 15-16 A/F in low load is fine and wont reduce the power the ONLY reason stock dosnt do it is for emissions i wouldnt suggest anything higher than 60 KPA but for highway cruise W/ full on power @ WOT this is the only way to have your cake and eat it
G/L with the detune and reassigning MBT to the timing tables I would think that would hurt fuel economy remember at low load/low throttle blade there is so much EGR detonation is almost impossible, the lower A/F also slows the flame propagation so timing adjustments are unnecessary
There is more than just the MBT you have to mess with, there are several timing adjustments that you have to make. EGR? Our cars don't have an EGR system on them, or are you talking about the EGR switch points for NOX emissions?
Quote: Originally Posted by nutz
just wanted to add, that if anything the MPG you gain will be minimal maybe 1-3mpg in cruise the best way to add mpg is to clean out the car get rid of any weight and fill the tires up to max psi for less rolling resistance, or go on a diet
the car is what it is there are some very technical ways to gain fuel economy but unfortunately our cars are a performance beast not an econo car and suck fuel as your right foot dictates :hint:
We have seen 4 to 5 MPH gains from messing with the tune. I have to agree with you on the weight, tire pressure, ect. There are other ways to get the MPG raised on your car. You can hide that fuel or throttle input from the PCM, this is what I have been trying to point out for the last few posts.... its not what we do, its what the PCM thinks we want it to do that rasies the MPG.
There is more than just the MBT you have to mess with, there are several timing adjustments that you have to make. EGR? Our cars don't have an EGR system on them, or are you talking about the EGR switch points for NOX emissions?
your cam and PCV is EGR works for me 15.5 A/F is the best for economy, but I understand you guys dont have the W/B closed loop (that sux)
We have seen 4 to 5 MPH gains from messing with the tune. I have to agree with you on the weight, tire pressure, ect. There are other ways to get the MPG raised on your car. You can hide that fuel or throttle input from the PCM, this is what I have been trying to point out for the last few posts.... its not what we do, its what the PCM thinks we want it to do that rasies the MPG.
yea I dont know enough about the DSP in general to comment on tune stratigy, just what has been good to me I am sure the more you play with it the closer you will come I hope in the future you can figure out a way to "have it all" with the DSP
I am going to give this an unobjective try/test and will post up the #'s when it's done. I am having fun using the DSP and learning what it can do. I have a friend that got a tuner for a truck that came with 3 tunes on it. ( fuel, towing, and performance) no reason why we can't do the same. - the towing tune lol
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maybe the DSP (stock ECU) is different but 15-16 A/F in low load is fine and wont reduce the power 
i wouldnt suggest anything higher than 60 KPA 
but for highway cruise W/ full on power @ WOT this is the only way to have your cake and eat it 
I am sure the more you play with it the closer you will come 
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