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gold28 Forums Junkie Location: Madrid - Spain Registered: August 2002	Re: larger injectors with factory ECU? Mon, 03 March 2003 05:24 You don't want to just wire up another single injector against an existing one. The normal fuel injectors are designed to pulse the fuel, thats why you have one per cylinder. Some cars (even toyota's) use a cold start injector in a similar manner to a choke. There is a means of idle-up and a temp switch to fire up the additional injector. This injector squirts continuously at a fairly low flow rate. I think most of the older multi point injected toyotas use this method and it is rigged up to a timer. Newer models just increase the firing time on the main injectors to richen it up. You will need to tap off the fuel before the regulator so you don't stuff up the pressure to the existing injectors. Then just wire it up to an adjustable fressure switch and dial in the pressure you want it to start at. The additional injector needs to be fitted before the plenum so that each of the inlet runners get a share. Have a hunt on the net, I came across this one a while back that looks OK http://www.xmission.com/~dempsey/perform/injector. htm Have fun [Report message to a moderator]

	Subject	Poster	Date
	larger injectors with factory ECU?	TWSTD	Sun, 02 March 2003 22:26
	Re: larger injectors with factory ECU?	Norbie	Mon, 03 March 2003 00:01
	Re: larger injectors with factory ECU?	TWSTD	Mon, 03 March 2003 00:12
	Re: larger injectors with factory ECU?	Norbie	Mon, 03 March 2003 00:19
	Re: larger injectors with factory ECU?	TWSTD	Mon, 03 March 2003 00:24
	Re: larger injectors with factory ECU?	E30-323ti	Mon, 03 March 2003 00:38
	Re: larger injectors with factory ECU?	TWSTD	Mon, 03 March 2003 00:46
	Re: larger injectors with factory ECU?	ed_ma61	Mon, 03 March 2003 01:39
	Re: larger injectors with factory ECU?	gold28	Mon, 03 March 2003 02:29
	Re: larger injectors with factory ECU?	E30-323ti	Mon, 03 March 2003 02:51
	Re: larger injectors with factory ECU?	TWSTD	Mon, 03 March 2003 03:44
	Re: larger injectors with factory ECU?	TWSTD	Mon, 03 March 2003 03:52
	Re: larger injectors with factory ECU?	gold28	Mon, 03 March 2003 05:24
	Re: larger injectors with factory ECU?	E30-323ti	Mon, 03 March 2003 20:54
	Re: larger injectors with factory ECU?	TWSTD	Mon, 03 March 2003 21:36
	Re: larger injectors with factory ECU?	E30-323ti	Mon, 03 March 2003 21:55
	Re: larger injectors with factory ECU?	TWSTD	Mon, 03 March 2003 22:18
	Re: larger injectors with factory ECU?	E30-323ti	Mon, 03 March 2003 23:15
	Re: larger injectors with factory ECU?	sideshow	Tue, 04 March 2003 10:43
	Re: larger injectors with factory ECU?	TWSTD	Mon, 10 March 2003 03:56
	Re: larger injectors with factory ECU?	gold28	Mon, 10 March 2003 05:52
	Re: larger injectors with factory ECU?	sideshow	Mon, 10 March 2003 10:59

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