Tune after intake and catback installed??

[Exploded_In_AZ]

Hello all, I just picked up a 97 Explorer 4X4 4.0 SOCH with 208K on it. I am in the process of doing a lot of repairs to get her where i want her,but also want to do some quick bolt on mods. i don't think a 2.5in catback will really affect anything, but will an intake affect my drivability or A/F without getting a tune?? After i installed a 3in intake on my WRX it ran like **** and threw system too lean codes until i got a tune. I'm new to Explorers so any info helps. Thanks in advance

 

[ramren16]

you shouldnt have a problem the computer will adjust for it you should always disconnect the negetive side of the battery to reset the computer it will help aid in a faster learn process

 

[Exploded_In_AZ]

Thanks, i didnt think the pcm on this would adjust it itself. i figured the technology wasn't that advanced in 97 lol

 

[lowerjon]

air intakes

Cold air intake is mainly a device which brings comparatively cooler air, to the car’s internal combustion engine, and thus, increases the engine power and efficiency. Air intake systems contribute to a substantial increase in the horsepower. This is an inexpensive way to increase the efficiency of your car engine.

Cold air systems have four parts. They include two mandrel-bent aluminum piping, one billet-aluminum MAF adaptor and one high flow filter. These systems generally tend to add 3-5 horse power, to the engine. The sound wave generated by an intake system and its frequency varies greatly, depending upon the length of the system; the longer the system, the lower the frequency. With all the usual intake systems, as the RPM increases, the inlet valve opening also increases accordingly; but the length of the inlet tract remains constant throughout.

I like K&N

 

[2000StreetRod]

closed loop only

The "learning" or "adjustment" is the result of O2 sensor feedback and the PCM compensating for a lean or rich air/fuel mixture. The long and short term fuel trims are stored in keep alive memory"KAM" to be used during the next driving cycle. At engine start and moderate to wide open throttle the PCM is in open loop and utilizes stored parameters set by the factory or custom tune. If the intake or exhaust flow is significantly changed the optimum A/F ratio will not be used when in open loop.