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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Whipple Performance Upgrade Kit and Tune
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<blockquote data-quote="OPT PRIME" data-source="post: 1209543" data-attributes="member: 24166"><p>When I had a custom LS7 tuned for track work the tuner asked me whether I wanted the engine to last 12 hours or several seasons. One of the other questions he asked me about was catalytic converter overheat protection. Apparently some engines calculate a point in time when the cat is at risk of overheating and failure, the AFR gets very rich to cool the temps, lots power is lost and more fuel is burned. He disabled this on a ZR1 (blown) and the cats failed within 20 minutes of track work, they never did on my NA application. That being said, do any of these tunes use similar methods to prevent damage to cats under extended runs, like towing many miles up a 6% grade? I also understand there is a world of difference between running flat out on a track and what can be achieved on the street. Are turbo exhaust temperatures something we have to watch at sea level, flooring it at 8,000 feet, maybe up Pikes Peak?</p></blockquote><p></p>
[QUOTE="OPT PRIME, post: 1209543, member: 24166"] When I had a custom LS7 tuned for track work the tuner asked me whether I wanted the engine to last 12 hours or several seasons. One of the other questions he asked me about was catalytic converter overheat protection. Apparently some engines calculate a point in time when the cat is at risk of overheating and failure, the AFR gets very rich to cool the temps, lots power is lost and more fuel is burned. He disabled this on a ZR1 (blown) and the cats failed within 20 minutes of track work, they never did on my NA application. That being said, do any of these tunes use similar methods to prevent damage to cats under extended runs, like towing many miles up a 6% grade? I also understand there is a world of difference between running flat out on a track and what can be achieved on the street. Are turbo exhaust temperatures something we have to watch at sea level, flooring it at 8,000 feet, maybe up Pikes Peak? [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
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Whipple Performance Upgrade Kit and Tune
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