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SVTPerformance's Chain of Restaurants
Tuning À la carte
2003 cobra tuning with sct handheld 3015
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<blockquote data-quote="smashedheadcat" data-source="post: 15278818" data-attributes="member: 7756"><p>The MAC straight show CAI uses a 95mm maf housing. The oem sensor and tune in the larger housing will certainly make things "different". First, the maf will see less air than what is going into the engine. When that happens, your car will be "leaner" under open loop fueling. Also, since your maf xfer function will be off (slightly) for the same reasons the fueling will be off, LOAD will be lower. This will bring in more ignition timing.</p><p></p><p>With that said, this is exactly what a "custom" tune is do for you. The difference, one will be done in a controlled environment with datalogging and air to fuel monitoring. At the very least, get yourself a wideband or hit the dyno for an air to fuel check and datalog the pull. </p><p></p><p>I ran the MAC straight shot CAI, MAC prochamber, and borla stingers without a tune for about two years and I flogged the dog with it. After that, I went the twin turbo route (Dec 2005) and I am still on the stock longblock.</p></blockquote><p></p>
[QUOTE="smashedheadcat, post: 15278818, member: 7756"] The MAC straight show CAI uses a 95mm maf housing. The oem sensor and tune in the larger housing will certainly make things "different". First, the maf will see less air than what is going into the engine. When that happens, your car will be "leaner" under open loop fueling. Also, since your maf xfer function will be off (slightly) for the same reasons the fueling will be off, LOAD will be lower. This will bring in more ignition timing. With that said, this is exactly what a "custom" tune is do for you. The difference, one will be done in a controlled environment with datalogging and air to fuel monitoring. At the very least, get yourself a wideband or hit the dyno for an air to fuel check and datalog the pull. I ran the MAC straight shot CAI, MAC prochamber, and borla stingers without a tune for about two years and I flogged the dog with it. After that, I went the twin turbo route (Dec 2005) and I am still on the stock longblock. [/QUOTE]
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SVTPerformance's Chain of Restaurants
Tuning À la carte
2003 cobra tuning with sct handheld 3015
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