mapitts

Just wondering if any one has tuned with a stock air box and what did you think of it compared to the tune with a CAI. From what I can dig up, a CAI may be a thing of the past. Any feedback is welcome. Just looking for a little more "punch".

jwog666

on the s550 the stock air box is about as good as it gets, the aftermarket designs offer no gains and are just expensive trimming. ford built a good intake

darkmach1

I do believe that there are dyno sheets that show gains with intakes like the JLT, mostly towards the top of the powerband.

jwog666

when combined with a tune, yes. but those gains are from the tune, they are pretty much selling the intake as snake oil

darkmach1

I dont believe so, we agree to disagree.

scottmach

And you'd be wrong. An aftermarket CAI is useless. The stock one works better since the iat's won't be through the roof.

whatsup62

Well I think everybody is wrong...and right.
The stock airbox is top notch and with very few mods (catback and a tune) it would work fine...no gains from after market CAI. If you are planning on more mods (long tubes, more aggressive tune, cams, nitrous) a after market CAI would be needed and have gains. I went with a Airaid unit because I liked the looks of it and like the OEM it is enclosed. I did all my mods at once and plan on continuing the mod process.

jwog666

low IAT's are the way to go, the restriction is not an issue. if there was any MPG or performance to be gained by adjusting the plastic box ford would do it. an underhood exposed air filter that is not sealed away from the underhood air and radiator wash, ( i dont mean a piece of plastic with a rubber lip), it not only doesnt offer gains, it hurts performance. the thing to look out for with any aftermarket add on especially CAI's is this, when they dyno tested the unit was the hood closed? if not their numbers are not real world numbers. a dyno pull with the hood open vs the hood closed with an exposed air filter will be very different due to the hot air being drawn in from under the hood. this is how the inflated numbers for CAI's are come by. fact yay science

darkmach1

MY IATs are already thru the roof with stock intake. Plus, when do you see high IATs, in traffic? Will you be racing in traffic? No.

Plenty of dyno sheets on M6G showing gains over tune only. An aftermarket tune isn't as conservative as a stock tune in the timing pulled dept due to IATs. Also one good acceleration from a stop at 130* IATs and by the time you pass 60mph your IATs are back to slightly above ambient due to the air velocity. The timing pulled is short felt, if any at all.

darkmach1

No car manufacturer gives you anything maxed out. Its like saying if there was any MPG or performance to be gained by adjusting the tune ford would have done it.