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oldcorollas Forums Junkie Location: Kita-Ku, Sapporo, Japan Registered: January 2003	Re: 40c DIY FCD for 1JZ Sun, 02 May 2004 13:17 just readin the thread, and this is not exactly a 40c mod but.... is the JZ MAP a relative or absolute pressure sensor?? what voltage is it at atmospheric pressure?? i think a relatively simple way to fool the ECU is: if stock MAP goes to 5V at 1BAR get MAP sensor that has same volts at atmospheric, and goes to 5V at 1.5 BAR (the MPX4250 goes to 1.5BAR boost and is about AUD$30 from www.digikey.com) this way the EXU sees 2/3rds of actual boost, as determined by MAP sensor. (ie boost is 50% more than it thinks) then, raise fuel pressure by 50%. this way fuel delivered for same PWM is 50% more than the ECU thinks... for vacuum? i assume that the stock MAP goes to near 0V at 1bar vac. so does MPX4250. even for vacuum, the ECU will see 2/3rds actual boost and the increased fuel pressure will still work. you still want the fuel pressure reg to be vac referenced, with 1:1 ratio, but base pressure be 50% more (ie 50% higher pressure everywhere. doable? Cya, Stewart [Report message to a moderator]

	Subject	Poster	Date
	40c DIY FCD for 1JZ	BigWorm	Thu, 22 April 2004 02:48
	Re: 40c DIY FCD for 1JZ	lumpy	Thu, 22 April 2004 03:48
	Re: 40c DIY FCD for 1JZ	BigWorm	Thu, 22 April 2004 03:54
	Re: 40c DIY FCD for 1JZ	lumpy	Thu, 22 April 2004 03:56
	Re: 40c DIY FCD for 1JZ	7M-Brisbane	Thu, 22 April 2004 07:03
	Re: 40c DIY FCD for 1JZ	THE WITZL	Thu, 22 April 2004 07:57
	Re: 40c DIY FCD for 1JZ	Special Ed	Thu, 22 April 2004 14:49
	Re: 40c DIY FCD for 1JZ	E30-323ti	Thu, 22 April 2004 21:48
	Re: 40c DIY FCD for 1JZ	Grant	Thu, 22 April 2004 22:11
	Re: 40c DIY FCD for 1JZ	ogip	Sun, 25 April 2004 15:25
	Re: 40c DIY FCD for 1JZ	THE WITZL	Fri, 23 April 2004 03:12
	Re: 40c DIY FCD for 1JZ	BigWorm	Fri, 23 April 2004 16:37
	Re: 40c DIY FCD for 1JZ	BigWorm	Mon, 26 April 2004 01:40
	Re: 40c DIY FCD for 1JZ	Looonie	Fri, 23 April 2004 20:18
	Re: 40c DIY FCD for 1JZ	BigWorm	Sat, 24 April 2004 17:00
	Re: 40c DIY FCD for 1JZ	mrshin	Sat, 24 April 2004 22:54
	Re: 40c DIY FCD for 1JZ	BigWorm	Sun, 25 April 2004 15:43
	Re: 40c DIY FCD for 1JZ	HedgehogSandwich	Sun, 25 April 2004 16:27
	Re: 40c DIY FCD for 1JZ	BigWorm	Mon, 26 April 2004 07:25
	Re: 40c DIY FCD for 1JZ	HedgehogSandwich	Mon, 26 April 2004 17:29
	Re: 40c DIY FCD for 1JZ	Soarer	Tue, 27 April 2004 02:15
	Re: 40c DIY FCD for 1JZ	BigWorm	Tue, 27 April 2004 10:05
	Re: 40c DIY FCD for 1JZ	ogip	Tue, 27 April 2004 10:51
	Re: 40c DIY FCD for 1JZ	Jag7799	Tue, 27 April 2004 11:50
	Re: 40c DIY FCD for 1JZ	BigWorm	Tue, 27 April 2004 12:44
	Re: 40c DIY FCD for 1JZ	spans	Tue, 27 April 2004 15:14
	Re: 40c DIY FCD for 1JZ	BigWorm	Wed, 28 April 2004 07:50
	Re: 40c DIY FCD for 1JZ	Chris Davey	Thu, 29 April 2004 01:56
	Re: 40c DIY FCD for 1JZ	Special Ed	Thu, 29 April 2004 02:06
	Re: 40c DIY FCD for 1JZ	Chris Davey	Thu, 29 April 2004 07:37
	Re: 40c DIY FCD for 1JZ	CrAiGzEE	Thu, 29 April 2004 11:37
	Re: 40c DIY FCD for 1JZ	Jag7799	Thu, 29 April 2004 11:49
	Re: 40c DIY FCD for 1JZ	BigWorm	Fri, 30 April 2004 05:26
	Re: 40c DIY FCD for 1JZ	celicamad	Sat, 01 May 2004 12:09
	Re: 40c DIY FCD for 1JZ	mx83toy	Sun, 02 May 2004 02:48
	Re: 40c DIY FCD for 1JZ	Chris Davey	Sun, 02 May 2004 01:27
	Re: 40c DIY FCD for 1JZ	Jag7799	Sun, 02 May 2004 11:22
	Re: 40c DIY FCD for 1JZ	celicamad	Sun, 02 May 2004 12:51
	Re: 40c DIY FCD for 1JZ	oldcorollas	Sun, 02 May 2004 13:17
	Re: 40c DIY FCD for 1JZ	Jag7799	Sun, 02 May 2004 14:00
	Re: 40c DIY FCD for 1JZ	Chris Davey	Mon, 03 May 2004 05:11
	Re: 40c DIY FCD for 1JZ	Jag7799	Mon, 03 May 2004 11:22
	Re: 40c DIY FCD for 1JZ	celicamad	Mon, 03 May 2004 11:37
	Re: 40c DIY FCD for 1JZ	indian	Tue, 04 May 2004 00:31
	Re: 40c DIY FCD for 1JZ	celicamad	Tue, 04 May 2004 08:47
	Re: 40c DIY FCD for 1JZ	indian	Tue, 04 May 2004 22:46
	Re: 40c DIY FCD for 1JZ	Chris Davey	Mon, 03 May 2004 22:25
	Re: 40c DIY FCD for 1JZ	Chris Davey	Tue, 04 May 2004 09:09
	Re: 40c DIY FCD for 1JZ	Jag7799	Wed, 05 May 2004 08:15
	Re: 40c DIY FCD for 1JZ	Bugman	Tue, 04 May 2004 12:41
	Re: 40c DIY FCD for 1JZ	celicamad	Tue, 04 May 2004 13:05
	Re: 40c DIY FCD for 1JZ	Special Ed	Wed, 05 May 2004 00:19

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