HKS FCD Fuel Cut Controllers? - Page 2

Travis89Turbo · 05-27-2011, 10:22 PM

That's not pricey. That's what they cost. I do think u can get one on eBay for $10 less. But I would buy from a company.

I have one and it works great. The downside is u loose the safety of a fuel cut. It just eliminates it.

He definatly can be hitting fuel cut at 9 pounds on a 7m stock ecu. But doesn't sound right to gain that much more boost with just a downpipe thou. I would for sure check the wastegate vac line.

Very few air/fuel controllers will help your fuel cut. And they are WAY WAY more expensive then $135!

The absolute best route will always be a full standalone. You get the best of all worlds. You have a fuel cut and it will be fully adjustable. Plus all the other perks will the fuel control. But with the slight mods you have and 8lbs. Then the HKS FCD is perfect for u.

Don't get to excited with boost WITHOUT supporting mods or you will blow your engine.

STR · 05-27-2011, 10:49 PM

thanks. i do want to mod but i think i will take my time. 9psi will do just fine for now, just want her to not be beat by mini vans lol

916MKIIIx2 · 05-28-2011, 12:34 AM

You can definitely get a used stand-alone Air/Fuel controller with adjustable fuel cut off for 150-300 on ebay, but for you I would first find out whats making you overboost, simply putting the downpipe on shouldn't do that.

cre · 05-31-2011, 03:59 AM

I disagree, fuel cut at only 9psi on a stock CT-26.... something's wrong or you're driving in VERY crap weather (HOT and DRY). 9psi is the top of the spec for the MKIII, should be able to pass that with no problem. You really shouldn't see fuel cut until at least 12psi at sea level.

A fuel controller doesn't magically allow you to up the boost. It allows you to run higher flow (via larger injectors or higher fuel pressure) and then tell the ECU that less air is actually entering the system.

A FCD just flat out lies to the ECU by telling it that once a certain threshold there is no additional air entering the system.... VERY bad idea without a fuel controller and proper tuning to ensure you're not going engine killer lean.

05-27-2011, 10:22 PM	#11
Travis89Turbo 12psi boost Join Date: Jul 2010 Location: Utah Posts: 332	That's not pricey. That's what they cost. I do think u can get one on eBay for $10 less. But I would buy from a company. I have one and it works great. The downside is u loose the safety of a fuel cut. It just eliminates it. He definatly can be hitting fuel cut at 9 pounds on a 7m stock ecu. But doesn't sound right to gain that much more boost with just a downpipe thou. I would for sure check the wastegate vac line. Very few air/fuel controllers will help your fuel cut. And they are WAY WAY more expensive then $135! The absolute best route will always be a full standalone. You get the best of all worlds. You have a fuel cut and it will be fully adjustable. Plus all the other perks will the fuel control. But with the slight mods you have and 8lbs. Then the HKS FCD is perfect for u. Don't get to excited with boost WITHOUT supporting mods or you will blow your engine. __________________ 1995 Toyota Supra SE 71k miles. Master power T70 stock 2jzge 1989 Toyota Supra. 1jzgte swap 5 speed of course.. Driftmotion 60-1 single turbo kit. Cxracing FMIC. 2jz 550cc injectors... soon to come..... EMS Stinger. BC 264 cams 680cc injectors Spec stage 4 clutch and A LOT of boost!------SOLD 1999 Ford F350 diesel 2004 Jaguar XJR Supercharged If it hasnt broke you haven pushed it hard enough!!

05-31-2011, 03:59 AM	#14
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	I disagree, fuel cut at only 9psi on a stock CT-26.... something's wrong or you're driving in VERY crap weather (HOT and DRY). 9psi is the top of the spec for the MKIII, should be able to pass that with no problem. You really shouldn't see fuel cut until at least 12psi at sea level. A fuel controller doesn't magically allow you to up the boost. It allows you to run higher flow (via larger injectors or higher fuel pressure) and then tell the ECU that less air is actually entering the system. A FCD just flat out lies to the ECU by telling it that once a certain threshold there is no additional air entering the system.... VERY bad idea without a fuel controller and proper tuning to ensure you're not going engine killer lean. __________________ 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 --->

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05-27-2011, 10:49 PM	#12
STR Stock Join Date: May 2011 Location: Hamilton, ON Posts: 20	thanks. i do want to mod but i think i will take my time. 9psi will do just fine for now, just want her to not be beat by mini vans lol

05-28-2011, 12:34 AM	#13
916MKIIIx2 3" Exhaust Join Date: Nov 2008 Location: California Posts: 152	You can definitely get a used stand-alone Air/Fuel controller with adjustable fuel cut off for 150-300 on ebay, but for you I would first find out whats making you overboost, simply putting the downpipe on shouldn't do that.