fcd (fuel cut defencer) necesary for upgrade?

fantasma87 · 10-13-2010, 06:18 PM

this item is necesary when you are upgrading the engine for at least 11-15 psi? i whant to know because i will upgrade mine and need to know if i need it or it will be un-necessary. thank you . Q

btwilson86 · 10-13-2010, 08:01 PM

IIRC, FCD is an outdated piece of electronics that isn't necessary with the proper support mods. I've read that it is still potentially damaging to your engine and therefore should not be used.

I'm pretty sure the lexus AFM, 550's, and upgraded fuel pump should allow you to safely boost to those pressures, but I would wait for someone else to confirm what I typed here

fantasma87 · 10-13-2010, 09:37 PM

thanks 86 , i just bought the hks afr , is it good for the upgrade?

89ST · 10-14-2010, 03:15 PM

Yeah,

That can be a really smart upgrade to have when altering stock boost levels. To accompany it you will want an afr gauge though, this will tell you when you're running lean or rich... or hopefully Stoich! therefore telling you in which direction you need to adjust your afr regulator.

Again you'll also want the upgrades listed above. Those will allow 11-15 psi.

kamikazemkiii · 10-14-2010, 06:01 PM

To make power you need more fuel and more air, your fuel controller will allow you to change the mixture to a certain but you'll need a wideband to see what your doing, or have it tuned

I have a wideband for 300 shipped

fantasma87 · 10-14-2010, 08:28 PM

thanks kamikaze but i will stay with this setting for now. I have to wait until I get home and start working on fantasma and then see what else I need.

kamikazemkiii · 10-15-2010, 01:17 AM

Quote:

Originally Posted by fantasma87

thanks kamikaze but i will stay with this setting for now. I have to wait until I get home and start working on fantasma and then see what else I need.

Just be careful what you do, HG doesnt play

10-13-2010, 06:18 PM	#1
fantasma87 3" Exhaust Join Date: Oct 2010 Location: kansas Posts: 166	fcd (fuel cut defencer) necesary for upgrade? this item is necesary when you are upgrading the engine for at least 11-15 psi? i whant to know because i will upgrade mine and need to know if i need it or it will be un-necessary. thank you . Q __________________ Nice 87 Supra, Pearl white, targa top, 5 spd, 7mgte ARMY STRONG !! La fiebre Boricua Puerto Rico!!!

10-13-2010, 08:01 PM	#2
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	IIRC, FCD is an outdated piece of electronics that isn't necessary with the proper support mods. I've read that it is still potentially damaging to your engine and therefore should not be used. I'm pretty sure the lexus AFM, 550's, and upgraded fuel pump should allow you to safely boost to those pressures, but I would wait for someone else to confirm what I typed here __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

10-13-2010, 09:37 PM	#3
fantasma87 3" Exhaust Join Date: Oct 2010 Location: kansas Posts: 166	thanks 86 , i just bought the hks afr , is it good for the upgrade? __________________ Nice 87 Supra, Pearl white, targa top, 5 spd, 7mgte ARMY STRONG !! La fiebre Boricua Puerto Rico!!!

10-14-2010, 08:28 PM	#6
fantasma87 3" Exhaust Join Date: Oct 2010 Location: kansas Posts: 166	thanks kamikaze but i will stay with this setting for now. I have to wait until I get home and start working on fantasma and then see what else I need. __________________ Nice 87 Supra, Pearl white, targa top, 5 spd, 7mgte ARMY STRONG !! La fiebre Boricua Puerto Rico!!!

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10-14-2010, 03:15 PM	#4
89ST Intake Join Date: Sep 2010 Location: Hamilton Ontario Posts: 40	Yeah, That can be a really smart upgrade to have when altering stock boost levels. To accompany it you will want an afr gauge though, this will tell you when you're running lean or rich... or hopefully Stoich! therefore telling you in which direction you need to adjust your afr regulator. Again you'll also want the upgrades listed above. Those will allow 11-15 psi.

10-14-2010, 06:01 PM	#5
kamikazemkiii 3" Exhaust Join Date: Mar 2009 Location: raleigh Posts: 138	To make power you need more fuel and more air, your fuel controller will allow you to change the mixture to a certain but you'll need a wideband to see what your doing, or have it tuned I have a wideband for 300 shipped