[Jackpine]

Originally Posted by rednoved

I believe you would have to get the tunes adjusted. Adding a CAI or Gotts mod can make a difference in the performance. The best way to take advantage of one is to have a tune telling the truck what to do with the extra air. Since your tunes were for the stock intake, you would probably have to get your tunes adjusted. I'm not sure what all has to be changed, but I think the Air to Fuel ratio has to be corrected.

I just bought an AEM intake and I'll be installing it next week. I don't have custom tunes yet, but I'm about to buy them. I know the canned tunes were written for a stock intake, which provides less air flow. By adding the CAI, it increases the amount of air the engine gets, and the fuel amount stays the same, causing a leaner condition. I would think it would be same for a custom tune written for a stock intake.

I'm going to insert a small correction here. Installing the "Gotts" style intake will NOT require a retune. Yes, we think you get extra air with it, but because the environment around the MAF sensor is not disturbed, the sensor will see the extra air properly and the PCM will be able to adjust the A/F ratio accordingly. This is NOT true of a commercial CAI that alters the MAF sensor environment though. That would require a retune, because the sensor does not really "see" the extra air.

Does the "Gotts" intake make that much difference? Not really. I don't seem to be able to "feel" the extra 7-8 HP it's supposed to give me. But, the engine runs very smoothly, and, it's even possible I'm getting slightly better gas mileage.

- Jack