mk3 Supra w/ fcd from hks

Supra_87_mk3 · 03-17-2010, 02:50 AM

hello, i just got my 89 supra running, and i have straightened out almost all of my little bugs the only concern left un answered is why im getting a feeling of fuel cut, idk if it is forsure or if there is a chance of some tiype of limp mode, but all i can suspect is fuel cut,

i have a short list of most of my upgrades on my sig,

but in full throttle i seem to be hitting a brick wall and it is clearly cuttin fuel but its at about 3,500 rpm

i have the hks FCD, does anyone know what setting is the best for my 7mgte?

cre · 03-17-2010, 02:59 AM

FCD is a HORRIBLE idea... ancient tech and way too much potential for damage. There is no magic number, it depends on your build and your tune.

How did you tune the fuel? Have you got a wideband installed? What's your AFR when it stumbles?

My money's on the engine running lean or fuel cut.

03-17-2010, 02:50 AM	#1
Supra_87_mk3 3" Exhaust Join Date: Apr 2007 Location: tiffin ohio Posts: 76	mk3 Supra w/ fcd from hks hello, i just got my 89 supra running, and i have straightened out almost all of my little bugs the only concern left un answered is why im getting a feeling of fuel cut, idk if it is forsure or if there is a chance of some tiype of limp mode, but all i can suspect is fuel cut, i have a short list of most of my upgrades on my sig, but in full throttle i seem to be hitting a brick wall and it is clearly cuttin fuel but its at about 3,500 rpm i have the hks FCD, does anyone know what setting is the best for my 7mgte? __________________ My 1989 toyota supra mods:83.5 mm bore, ARP main studs, ARP rod bolts,rings, Cometic .060" headgasket, ARP head Studs, Ferra 1 mm oversized valves, port work, Rc 550cc injectors, Walbro 255hp Turbo: 1.15 A/R T4 twin Scroll turbin - journal .60 A/R compressor, Hallman Pro MBC, Turbo XS Blow-off Valve, 50mm wastegate, hks fcd Intercooler: 32x12x3 core, 3 inch piping, with clampco t-bolt clamps Exhaust:Exhaust manifold T4 twin scroll,2JZ 3 inch downpipe Fabed up to fit, Mandrell bent 3in back

03-17-2010, 02:59 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	FCD is a HORRIBLE idea... ancient tech and way too much potential for damage. There is no magic number, it depends on your build and your tune. How did you tune the fuel? Have you got a wideband installed? What's your AFR when it stumbles? My money's on the engine running lean or fuel cut. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Begginer to SUPRA and cars, I GOT A FREE SUPRA, PLEASE HELP!!	89MkiiiSupra	Non-Generation Specific Questions	5	06-01-2010 06:48 AM
Kill Board!	Isphius	Show n Tell	95	01-25-2010 05:05 AM
Questions about MKIV Supra	ukno0003	MKIV Supra	5	11-06-2008 10:53 AM
Dream Offer	Karma_Supra	MKIV Supra	22	10-17-2007 03:04 PM
new here and thinking about getting a Supra	WhisPer	MKIV FAQ	20	03-17-2007 01:35 PM