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GEN 1 (2010-2014) Ford SVT Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
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<blockquote data-quote="Jordan@Apollo-Optics" data-source="post: 515901" data-attributes="member: 9648"><p>Correct me if I'm wrong, but I was under the impression the stock MAF can read more than what it reads stock for safety reasons. If you peg a MAF, you then have unmetered air going into the engine which is never a good thing (lean conditions). </p><p></p><p>Reason I think that is because on the 99-04 Lightnings, you could do a 4# pulley swap and tune and the stock MAF was fine. Going to a 6+# lower pulley needed an upgraded MAF sensor to account for the extra air going into the motor.</p><p></p><p>In theory, a CAI frees up the restriction of the stock air intake and allows a small amount more of air into the motor which helps it breathe/make more power. I've always been under the impression that if you mess with the intake or exhaust side of the motor (not talking a cat-back but something like headers) you'll need a tune.</p></blockquote><p></p>
[QUOTE="Jordan@Apollo-Optics, post: 515901, member: 9648"] Correct me if I'm wrong, but I was under the impression the stock MAF can read more than what it reads stock for safety reasons. If you peg a MAF, you then have unmetered air going into the engine which is never a good thing (lean conditions). Reason I think that is because on the 99-04 Lightnings, you could do a 4# pulley swap and tune and the stock MAF was fine. Going to a 6+# lower pulley needed an upgraded MAF sensor to account for the extra air going into the motor. In theory, a CAI frees up the restriction of the stock air intake and allows a small amount more of air into the motor which helps it breathe/make more power. I've always been under the impression that if you mess with the intake or exhaust side of the motor (not talking a cat-back but something like headers) you'll need a tune. [/QUOTE]
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