ECU modification question-fuel cut

raddy · 01-26-2006, 07:15 PM

Hi all
Im trying to help my friend who owned supra with 7M-GTE engine.
Problem is that he need to remove fuel cut.
It is some solution for this already done or ECU modification is neccessary for this?
Im experienced with ECU modification in my nissan 200sx, but will need some help with toyota....It is possible to provide me address file for 7M GTE engine for binary modification?

Thank you for your help and all your opinions.

Regards
Raddy

joel w · 01-26-2006, 07:27 PM

uhhhh, hahahha i know some people use the hks fuel cut defender, i do and it works fine, but there is no overboost protection. so keep an eye on the boost gauge.... also ive read about modding the afm, or installing the lexus afm and 550 injectors.. but ive never read about hacking the ecu...let us know ..

raddy · 01-26-2006, 09:54 PM

how you toyota guys install larger AFM and/or injectors withou ECU modification? Are you using just piggiback ecus for corrections?

joel w · 01-26-2006, 10:07 PM

well i think,,, and ppl correct me if im wrong.,, but the lexus afm is larger diameter so it takes much more flow before it tells the ecu to trip fuel cut.. and i think by the time most people get here, they have uprgrade with some sort of fuel management system. but we are beyond my level of smartness now... LOL...

lethalwithasupra · 01-27-2006, 06:29 AM

i met someone with the required level. works on an NZ Parker V8 pit crew ( hehe ! hot lap !! ) ... the lexus v8 afm is calibrated better somehow and its for a bigger engine. think the idea was it could just measure higher values of air flow. he said it actually removed the fuel cut on his friends car

raddy · 01-27-2006, 07:52 AM

So, there is no way I think.....
Bigger AFM have its limit far away from smaller one, but also it have different scale of voltage output to airmass then smaller one, so you need to recalibrate your ECU or piggiback....withou this you will recieve incorrect output values form AFM....
Anyway, thank you for your help, guys.

lintlars · 02-03-2006, 11:02 AM

if you use 550 injectors along with the Lexus AFM they balance each other out no need for piggybacks the rebic lc gets rid of the fuel cut

ddmcse · 02-03-2006, 11:45 AM

http://suprasonic.org/sonictech/techtom/

01-26-2006, 07:15 PM	#1
raddy Stock Join Date: Jan 2006 Posts: 3	ECU modification question-fuel cut Hi all Im trying to help my friend who owned supra with 7M-GTE engine. Problem is that he need to remove fuel cut. It is some solution for this already done or ECU modification is neccessary for this? Im experienced with ECU modification in my nissan 200sx, but will need some help with toyota....It is possible to provide me address file for 7M GTE engine for binary modification? Thank you for your help and all your opinions. Regards Raddy

01-27-2006, 06:29 AM	#5
lethalwithasupra 3" Exhaust Join Date: Sep 2005 Location: south cantebury Posts: 112	i met someone with the required level. works on an NZ Parker V8 pit crew ( hehe ! hot lap !! ) ... the lexus v8 afm is calibrated better somehow and its for a bigger engine. think the idea was it could just measure higher values of air flow. he said it actually removed the fuel cut on his friends car __________________ So I bought this old Honda bike, an NSR250. Bit of a street racer, I guess. I'm told they're fast. Delivering it home with a friend driving the Supra for the first time. I drop gears and make a scream from the twin pipes flowing down this pony's flanks and it takes off like it's tail's on fire. I look back when the Honda gets to its tap-out and the Supra's only two lengths behind. No one I've let ride my bike has told me its slow, they've all loved the thing. That car is a good thing indeed.

02-03-2006, 11:45 AM	#8
ddmcse 500whp yet? Join Date: Jun 2005 Location: CT U.S.A. Posts: 966	http://suprasonic.org/sonictech/techtom/ __________________ 300+ RW HP Dyno run, jdm,mod turbo,3"exh,electfan,greddyboost Blown HeadGasket info My Supra KiXGaS

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01-26-2006, 07:27 PM	#2
joel w Lexus & 550's Join Date: Aug 2005 Location: In the shadows Posts: 506	uhhhh, hahahha i know some people use the hks fuel cut defender, i do and it works fine, but there is no overboost protection. so keep an eye on the boost gauge.... also ive read about modding the afm, or installing the lexus afm and 550 injectors.. but ive never read about hacking the ecu...let us know ..

01-26-2006, 09:54 PM	#3
raddy Stock Join Date: Jan 2006 Posts: 3	how you toyota guys install larger AFM and/or injectors withou ECU modification? Are you using just piggiback ecus for corrections?

01-26-2006, 10:07 PM	#4
joel w Lexus & 550's Join Date: Aug 2005 Location: In the shadows Posts: 506	well i think,,, and ppl correct me if im wrong.,, but the lexus afm is larger diameter so it takes much more flow before it tells the ecu to trip fuel cut.. and i think by the time most people get here, they have uprgrade with some sort of fuel management system. but we are beyond my level of smartness now... LOL...

01-27-2006, 07:52 AM	#6
raddy Stock Join Date: Jan 2006 Posts: 3	So, there is no way I think..... Bigger AFM have its limit far away from smaller one, but also it have different scale of voltage output to airmass then smaller one, so you need to recalibrate your ECU or piggiback....withou this you will recieve incorrect output values form AFM.... Anyway, thank you for your help, guys.

02-03-2006, 11:02 AM	#7
lintlars Stock Join Date: Nov 2005 Posts: 10	if you use 550 injectors along with the Lexus AFM they balance each other out no need for piggybacks the rebic lc gets rid of the fuel cut