GT Performance Mods2005+ Mustang GT Performance and Technical Information
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From what I have read on these forums a person can disconnect the battery on their stang for 15 minutes and this will erase the computer and make it readjust to the conditions it sees when the car starts back up.
Has anyone tried this to see if the A/F ratio is fixed by the computer after installing any go fast parts, especially a CAI?
I would think this would work but it still would not provide the horsepower of a tune, but that it would keep the engine out of a lean condition.
James - I tried to install my CAI with only making adjustments to the Predator (i.e adjusting Fuel). This was a bad idea and I'm glad I did not drive around with it like that. The CAI make the engine way too lean (or was it rich?). Anyways the computer would not adjust for the amount need so that is why a custom tune is necesary.
I know one thing, if you disconnect the battery with the key in the ignition, you'll clear out the computer. Doing so, you might be lucky to reinstall the tune if you have an SCT or DTP. Most likely though, you'll have to take the car to the dealership to have them load a stock program back in the car.
I dont think so - adding a CAI may require a new set of parameters flashed into the computer, which is why for example C&L offers a tune. Reseting the computer just means it will use its stock program and try to adjust to the changes immediately instead of over a period of driving the car.... too much change, like a CAI and it will probably have problems, although it may not be apparent immediately. Such as using a CAI tune from another products set up. It may be close and seem to run fine but without checking there is no way to know if its adjusted correctly without having some kind of diagnosis tools available, like during a dyno session.
__________________ 2005 Black Ford Mustang GT Premium, 5 Speed Manual, ABS, Dark Charcoal Leather Interior, Interior Sport Apperance Package, Rear Spoiler, Shaker 1000, Active Anti-Theft, 17? Bright Machined-Aluminum Wheels, Wheel Lock Kit Mods: Saleen S/C , w/Saleen CAI,90mm Lightning MAF, 39# cobra inj, JDM xcal2 tune-92oct, 3.4" 9.5psi,Gates Belt, Prothane Bullet motor mounts, Autometer Cobalt Gauges:Boost&A/F, Autometer Pillar Gauge Pod , FR blk valve covers. SLP LM, FR 4.10 gears, FR Susp, Midwest Mirror inserts, BFG KDWS 255-50-ZR17. Upcoming mods: RIM and 275/45 R17 tires