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Ford Raptor Engine Discussion and Performance Mods
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<blockquote data-quote="Airborne Roush" data-source="post: 1230385" data-attributes="member: 25799"><p>This might be a long one so hang in there. If I start over explaining and you know all this skip to the end. </p><p></p><p>I have a Roush not Whipple but maybe I could clear some things up. Firstly I off road quite a bit and...</p><p></p><p><strong>Off-road mode absolutely works with a SC and tune. </strong></p><p></p><p>I have tuned vehicles in the past using HP Tuners and I can hopefully shed some light on the “tune”. So basically what people talk about when tuning is the adjustment of the air to fuel ratio (AFR/fuel trim), spark timing advance, rev limiters, shift points (meaning-throttle position vs speed vs load), torque modulation and other aspects that aren’t important for this right now. </p><p></p><p>The off-road button does not turn this off. Or on. The only thing it affects with the above mentioned aspects of tuning are the shift points. </p><p></p><p>In fact I went up into the mountains today with the raptor and used off road mode. The truck didn't blow up because it all of the sudden changed the AFR back to stock parameters. I also put it into 4 HI and locked the rear. Again none of this changes the PCM command of the fuel trims or spark timing advance etc. which is extra important with the addition of forced induction. </p><p>In off-road mode and WOT my AFR dropped just like it should today. </p><p></p><p></p><p>You will not lose any of the off-road mode functions with the addition of the SC and corresponding tune. Conversely you will not lose any of the added performance of the SC and tune when you go into off-road mode. </p><p></p><p>If you are looking to tune the off road mode functions another member posted that HP Tuners has just recently decoded this part in the programming so that is available now too. Which means you could change the shift points in off-road mode to what you want etc. This btw is a huge game changer and I can't wait to adjust mine for off-road mode. I believe that is what the other member was referring to about off-road not being tuned. </p><p></p><p>I hope this clears this up for the OP and others. Long winded I know but I just wanted to be clear on what was what and why it mattered. </p><p></p><p>I say definitely get a SC and you will have an off road monster on your hands. I absolutely love mine. I love it even more off roading it.</p></blockquote><p></p>
[QUOTE="Airborne Roush, post: 1230385, member: 25799"] This might be a long one so hang in there. If I start over explaining and you know all this skip to the end. I have a Roush not Whipple but maybe I could clear some things up. Firstly I off road quite a bit and... [B]Off-road mode absolutely works with a SC and tune. [/B] I have tuned vehicles in the past using HP Tuners and I can hopefully shed some light on the “tune”. So basically what people talk about when tuning is the adjustment of the air to fuel ratio (AFR/fuel trim), spark timing advance, rev limiters, shift points (meaning-throttle position vs speed vs load), torque modulation and other aspects that aren’t important for this right now. The off-road button does not turn this off. Or on. The only thing it affects with the above mentioned aspects of tuning are the shift points. In fact I went up into the mountains today with the raptor and used off road mode. The truck didn't blow up because it all of the sudden changed the AFR back to stock parameters. I also put it into 4 HI and locked the rear. Again none of this changes the PCM command of the fuel trims or spark timing advance etc. which is extra important with the addition of forced induction. In off-road mode and WOT my AFR dropped just like it should today. You will not lose any of the off-road mode functions with the addition of the SC and corresponding tune. Conversely you will not lose any of the added performance of the SC and tune when you go into off-road mode. If you are looking to tune the off road mode functions another member posted that HP Tuners has just recently decoded this part in the programming so that is available now too. Which means you could change the shift points in off-road mode to what you want etc. This btw is a huge game changer and I can't wait to adjust mine for off-road mode. I believe that is what the other member was referring to about off-road not being tuned. I hope this clears this up for the OP and others. Long winded I know but I just wanted to be clear on what was what and why it mattered. I say definitely get a SC and you will have an off road monster on your hands. I absolutely love mine. I love it even more off roading it. [/QUOTE]
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GEN 1 (2010-2014) Ford SVT Raptor Forums
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