CEL and MAP Fooler question

Mykol · #1 (**permalink**) 02-26-2007, 06:49 PM

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??

Mikes7.3 · #2 (**permalink**) 02-26-2007, 07:27 PM

No. Your map fooler doesn't allow the map to see the boost thereby not sending signal to ICM to defuel

***Ditty*** · #3 (**permalink**) 02-26-2007, 07:37 PM

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!!!!)

Mikes7.3 · #4 (**permalink**) 02-26-2007, 08:26 PM

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

***Ditty*** · #5 (**permalink**) 02-26-2007, 08:33 PM

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.

lilredpowerstroke · #6 (**permalink**) 02-28-2007, 07:54 PM

Quote:

Originally Posted by Ditty

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.