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Old 05-27-2011, 10:22 PM   #11
Travis89Turbo
12psi boost
 
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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.
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Old 05-27-2011, 10:49 PM   #12
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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
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Old 05-28-2011, 12:34 AM   #13
916MKIIIx2
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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.
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Old 05-31-2011, 03:59 AM   #14
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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.
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