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HedgehogSandwich Regular Location: UK Registered: May 2002	Re: 1JZ-GTE Fri, 30 January 2004 16:43 yep supraman i meant the non-vvti 1JZ differences, not the vvti version. aloso, apologies.. i didnt explain properly about the 440's and the fuel cut. What i mean is that when you install 440's to compensate for the higher boost *and* you keep the stock map sensor, you have no safety cutoff.. because you need an FCD to beat the 14.7psi fuel cut. Once you fit an FCD to the 1JZ then you lose the safety cutoff completely, as there is no headroom left on the stock map sensor to increase the fuel cut trigger (as s possible with other map based engines). So.. if you accidentally hit a boost spike or have a wastegate failure then its bye bye engine. Yours is fine as it is, but you have no safety cutoff. The only way round this is to fit a j-spec 2JZ map sensor, which measures the boost all the way up to 18psi... hence you can increase the fuel cut up to that level. BUT when you fit a 2JZ map sensor you reduce the map voltage going to the ECU by 25% (meaning you also lose 25% worth of fuel). Because of this you need at least 550's to replace the lost fuel and cope with the increased boost. Sorry if this isnt explained very well.. its quite complicated and i'm not the best at explainging things. [Updated on: Fri, 30 January 2004 16:48] [Report message to a moderator]

	Subject	Poster	Date
	1JZ-GTE	1G-GTEFreAk	Wed, 28 January 2004 01:52
	Re: 1JZ-GTE	robs	Wed, 28 January 2004 02:11
	Re: 1JZ-GTE	draven	Wed, 28 January 2004 02:34
	Re: 1JZ-GTE	Danish	Wed, 28 January 2004 02:35
	Re: 1JZ-GTE	1G-GTEFreAk	Wed, 28 January 2004 05:15
	Re: 1JZ-GTE	Norbie	Wed, 28 January 2004 05:49
	Re: 1JZ-GTE	HedgehogSandwich	Wed, 28 January 2004 13:25
	Re: 1JZ-GTE	ed_ma61	Wed, 28 January 2004 13:38
	Re: 1JZ-GTE	1G-GTEFreAk	Thu, 29 January 2004 04:02
	Re: 1JZ-GTE	E30-323ti	Thu, 29 January 2004 20:38
	Re: 1JZ-GTE	HedgehogSandwich	Fri, 30 January 2004 00:07
	Re: 1JZ-GTE	SUPRA MAN	Fri, 30 January 2004 04:03
	Re: 1JZ-GTE	HedgehogSandwich	Fri, 30 January 2004 12:02
	Re: 1JZ-GTE	SUPRA MAN	Fri, 30 January 2004 13:38
	Re: 1JZ-GTE	SUPRA MAN	Fri, 30 January 2004 13:41
	Re: 1JZ-GTE	draven	Fri, 30 January 2004 13:46
	Re: 1JZ-GTE	SUPRA MAN	Fri, 30 January 2004 13:48
	Re: 1JZ-GTE	draven	Fri, 30 January 2004 13:58
	Re: 1JZ-GTE	SUPRA MAN	Fri, 30 January 2004 14:07
	Re: 1JZ-GTE	HedgehogSandwich	Fri, 30 January 2004 16:43
	Re: 1JZ-GTE	robs	Sat, 31 January 2004 04:33
	Re: 1JZ-GTE	SUPRA MAN	Fri, 30 January 2004 13:39
	Re: 1JZ-GTE	HedgehogSandwich	Sat, 31 January 2004 12:38
	Re: 1JZ-GTE	7M-Brisbane	Sat, 31 January 2004 13:09
	Re: 1JZ-GTE	Norbie	Sat, 31 January 2004 15:33
	Re: 1JZ-GTE	wastegate	Sat, 31 January 2004 17:08
	Re: 1JZ-GTE	justcallmefrank	Sat, 31 January 2004 22:49
	Re: 1JZ-GTE	robs	Sun, 01 February 2004 05:09
	Re: 1JZ-GTE	HedgehogSandwich	Sun, 01 February 2004 11:03
	Re: 1JZ-GTE	robs	Sun, 01 February 2004 23:20
	Re: 1JZ-GTE	speakafreaka	Tue, 03 February 2004 09:12
	Re: 1JZ-GTE	Bugman	Tue, 03 February 2004 11:12
	Re: 1JZ-GTE	speakafreaka	Tue, 03 February 2004 11:20
	Re: 1JZ-GTE	7M-Brisbane	Tue, 03 February 2004 13:52
	Re: 1JZ-GTE	robs	Wed, 04 February 2004 04:38

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