CEL and MAP Fooler question - Ford Powerstroke Diesel Forum
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Old 02-26-2007, 06:49 PM
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CEL and MAP Fooler question

With the mods listed in my sig, as expected the CEL comes on when I go WOT. I understand that the MAP fooler will prevent the light from comming on. My question is does the engine begin de-fueling when the light comes on? Or does it actually perform the same with or without the fooler, with the only advantage of having a fooler being no light??
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Old 02-26-2007, 07:27 PM
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No. Your map fooler doesn't allow the map to see the boost thereby not sending signal to ICM to defuel
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Old 02-26-2007, 07:37 PM
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When your getting on it and you hit about 22-24 psi, the map sensor sends a signal to the computer, saying "Dude...too much boost!!!" The computer sets the CEL off and goes into defuel mode, forcing the boost to lower.

With a mapfooler, you can exceed the 22-24 psi b/c the fooler only lets the map sensor see 22psi max and therefore no "Dude...too much boost!!!" code to the computer.

I have a MapFooler from ITP...took about 20 mins to install and works flawlessly. (Just do NOT mess w/ it when you get it!!!) I'm hitting right at 29 psi at full throttle with NO CEL or defueling! I'm soo happy!

Personnally, I feel that some type of mapfooler device is mandatory for a modified PSD!

(Ohh yeah... WHOOP AGGIES!!!!)
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Old 02-26-2007, 08:26 PM
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I have the dual release valve but, I'm going to get rid of it and get the ITP Boost annihalater, better fooler I THINK. Oh and I think it's SES light LOL
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Old 02-26-2007, 08:33 PM
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Yeah...I looked at the relief valve and the foolers. I don't like that the relief valves allow a 'leak' in the boost pressure. The ITP fooler does not allow any 'leak' and just limits the amount of boost that the mapsensor sees.
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Old 02-28-2007, 07:54 PM
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Quote:
Originally Posted by Ditty View Post
Yeah...I looked at the relief valve and the foolers. I don't like that the relief valves allow a 'leak' in the boost pressure. The ITP fooler does not allow any 'leak' and just limits the amount of boost that the mapsensor sees.
So the one from ITP is an electrical device?? I thought it was a mechanical device which means it has to relieve boost somehow. Right or wrong?? Of course it wouldnt be the first time I've been wrong.
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Old 02-28-2007, 08:03 PM
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I might be wrong but Im pretty sure its mechanical it just doesnt bleed any boost off!
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Old 02-28-2007, 09:08 PM
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Then how does it keep the MAP sensor from seeing excessive boost??
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Old 02-28-2007, 09:16 PM
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Here is an explanation of it Overboost Annihilator
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Old 02-28-2007, 09:23 PM
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Originally Posted by vitalidle View Post
Here is an explanation of it Overboost Annihilator
It says its a regulator which means it bleeds off boost. Am I right or wrong??
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