do you need a chip when switching to 24lbs injectors.

StangOnline · 08-08-2003, 09:09 PM

Actually, the computer still thinks you have 19lb injectors, with is normal. The reason for matching the mass-air meter to the injectors is to trick the computer. The mass-air basically tells the computer that its getting a lot less air, making the computer tell the injectors to decrease their pulse width (amount of time the injector is open). Even at the decreased pulse width, the 24lb injectors will shoot close to the same amount of fuel as your stockers, which makes it run correctly at idle and part throttle. This ends up being able to provide more fuel at WOT.

The problem is, its just a guess. Hoping that your mass-air will send the computer information that will allow the injectors to send exactly the right amount of fuel just doesn't work well compared to a custom chip & a little dyno time.

Dont get me wrong, a larger than stock mass-air is definately a plus

Just saying that after you install a mass-air and injectors, you should head out to a dyno and have them tune it with a wideband.

Good luck
Jeff
www.stangonline.com - Mustang Auctions

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Chip Vs. Programmer	xxxBlakexxx	Modular Madness	18	12-30-2004 06:03 PM
Diablo Chip Test	xxxBlakexxx	Modular Madness	17	03-24-2004 05:37 AM
Which Chip is Best?	xxxBlakexxx	Modular Madness	1	12-28-2003 04:04 PM
24lbs injectors and crower 15511 on speed density	Yan88gt	Windsor Power	9	03-19-2002 10:16 AM
proM77 and 24lbs injectors worth 300	DemonGT	Blue Oval Lounge	5	03-07-2002 01:55 AM

08-08-2003, 09:09 PM	#1
StangOnline Registered Member Join Date: Mar 2003 Posts: 12	Actually, the computer still thinks you have 19lb injectors, with is normal. The reason for matching the mass-air meter to the injectors is to trick the computer. The mass-air basically tells the computer that its getting a lot less air, making the computer tell the injectors to decrease their pulse width (amount of time the injector is open). Even at the decreased pulse width, the 24lb injectors will shoot close to the same amount of fuel as your stockers, which makes it run correctly at idle and part throttle. This ends up being able to provide more fuel at WOT. The problem is, its just a guess. Hoping that your mass-air will send the computer information that will allow the injectors to send exactly the right amount of fuel just doesn't work well compared to a custom chip & a little dyno time. Dont get me wrong, a larger than stock mass-air is definately a plus Just saying that after you install a mass-air and injectors, you should head out to a dyno and have them tune it with a wideband. Good luck Jeff www.stangonline.com - Mustang Auctions