Just installed a new air intake. I followed instructions all through out. I disconnected the battery for about 45 min. The truck turns on but after about a second it shuts off. can anyone help

Others have installed the Mass Air Flow Sensor upside down. The symptoms are as you described. Try that.

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2007 Tundra 5.7, Double Cab, SR5, Blue Streak

TRD (stickers removed), de-badged, Volant Intake, Zoomers exhaust , Doug Thorley headers, Leer 100R, Bedrug, Curt front mounted hitch, Sirius interface kit, Tekonsha Prodigy brake controller, OEM alarm activation, Wet Okole seat covers, Stubby Antenna, Folding Rear Seat Mod for Double Cab, Unichip

Yup, I concur...that's where I'd start

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Nice truck!...Sorry about your penis.
2007 DC Tundra, 5.7L, Limited, Factory NAV, TRD, TRD Duals, TRD CAI
Truxxx 3" + 1" lift, Rear Supersprings, BFG TA/KO 305/65R18

MAF sensor would be my guess as well.

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2007 SR5 Crewmax 5.7L 4x4
Mods: nerf bars, Truxedo tonneau, radar detector power, fog lights, black billet grille, rear differential breather, parking sensors, Line-X, power tailgate lock, hood safety latch mod, one off driving lights behind grille, Pioneer NAV w/ OEM camera, Flowmaster 50 SUV dual/dual, blue LED dash lights, Volant CAI
All mod descriptions and pictures © 2007,2008 by Toxarch. They may be copied only for personal use and the mods may be done for non-profit only.

I know it was a minor error, thanks for the help. My truck turned on with a meaner growl. I flipped over the sensor and up it went. thanks again

Your welcome. By the way welcome to TTz. Any other mods? What truck do you have?

I have a 2007 5.7L double cab TRD. After i installed the intake and now that it is running my check engine is on along with the vsc off light. Did I forget something. Oh by the way I was looking into replacing the factory speakers any suggestions. I had an audio guy tell me that the front door speakers that are 6X9, aftermarket speaker will not fit, he said i have to go with a 6 1/2. Any thoughts.

I'm betting the computer is still showing a MAF sensor malfunction from it being installed backwards. Unplug the battery again for 5-10 minutes and press the brake pedal for a few seconds (to use up any remaining juice in any capacitors). That should clear the computer. Then connect it back, start the engine and see if you still have the lights on.

As for the speakers, you can put a 6x9 in the front doors if you use a speaker adapter. Some cut the old speaker out and use the factory surround, others buy the plastic piece online (ebay should have them), and some make their own.

as for an exhaust system. What would be the best bang for my buck exhaust.