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oldcorollas Forums Junkie Location: Kita-Ku, Sapporo, Japan Registered: January 2003	Re: 4AGE and carbies Sun, 29 February 2004 04:24 mrshin wrote on Sun, 29 February 2004 12:30 Next point: multi throttles and just a MAP sensor don't often go so blindingly well together Also, air flow meters aren't always as bad as most people suggest, plus nearly all the 16v 4ag's that people play with in Australia are MAP ones anyway just t blow this opinion out of the water forever yesterday i spent some time tuning an Alfa 2L twin cam (in a hot rod) using Megasquirt. it has suzuki GSX individual throttle bodies, and i think 250cc injectors? cams are around 230-240 @50 thou (ie around 270-290 advertised duration, bigger than most 4AG's) the 8 RPM bins were evenly spaced from 1000rpm to 7000rpm. the 8 MAP bins... well. the car idles at 75kpa (absolute pressure, ie 1atm is 100kpa), it cruises at 80-85kpa. and WOT was 95kpa. the MAP bins were set up as 60, 80, 83, 86, 89, 92, 95, 98. the O2 sensor correction was set to work up to 50% throttle (which gave about 90kpa manifold pressure), and had a range of +-20% correction with 1% correction per 16 ignition events, and 75%-100% throttle was at 92-95kpa. even with such a small MAP range on the table, the thing starts cruises and accelerates/decelerates as good or better than OEM cars. there's no hesitations, flat spots, bucking or popping. the guy had the cruise table worked out ok, and it took us about 10-15 minutes to get the 50% to 100% throttle part of the table worked out. damn it goes hard now everyone said the motor would not run on speed-density, and he would have to use alpha-N. speed density works fantastically, even tho the normal MAP range is only 75-100kpa (or 75%-100% load on a Wolf setup). there is no reason why a 4AG would not also work with almost exactly the same setup. and yes, AFM's arent really that bad, they don't have that much effect on the air going thru (ask anyone who bitches about them if they have measured the pressure drop across the AFM ) Cya, Stewart ps, his yellow rod is in the current issue of "Australian Street rodding" pages 22-25. [Updated on: Sun, 29 February 2004 04:27] [Report message to a moderator]

	Subject	Poster	Date
	4AGE and carbies	whatcrazyguy	Thu, 22 January 2004 07:30
	Re: 4AGE and carbies	draven	Thu, 22 January 2004 07:33
	Re: 4AGE and carbies	whatcrazyguy	Thu, 22 January 2004 09:11
	Re: 4AGE and carbies	mrshin	Thu, 22 January 2004 10:53
	Re: 4AGE and carbies	Grega	Fri, 23 January 2004 05:56
	Re: 4AGE and carbies	c2888	Sat, 24 January 2004 02:24
	Re: 4AGE and carbies	Sam_Q	Fri, 27 February 2004 14:33
	Re: 4AGE and carbies	RWDboy	Sat, 28 February 2004 00:17
	Re: 4AGE and carbies	Sam_Q	Sat, 28 February 2004 00:49
	Re: 4AGE and carbies	mrshin	Sat, 28 February 2004 04:56
	Re: 4AGE and carbies	Sam_Q	Sat, 28 February 2004 05:07
	Re: 4AGE and carbies	mrshin	Sat, 28 February 2004 05:13
	Re: 4AGE and carbies	Sam_Q	Sat, 28 February 2004 05:19
	Re: 4AGE and carbies	RWDboy	Sat, 28 February 2004 11:47
	Re: 4AGE and carbies	Sam_Q	Sat, 28 February 2004 13:58
	Re: 4AGE and carbies	mrshin	Sun, 29 February 2004 01:30
	Re: 4AGE and carbies	oldcorollas	Sun, 29 February 2004 04:24
	Re: 4AGE and carbies	Sam_Q	Sun, 29 February 2004 02:30
	Re: 4AGE and carbies	RWDboy	Sun, 29 February 2004 03:20

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