wssssshhhhh POW!! OH SHT... - Ford Powerstroke Diesel Forum
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Old 11-05-2009, 11:04 AM
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wssssshhhhh POW!! OH SHT...

So I rigged up an inline resistor setup on the ICM signal line to a switch. Fooled around with a bunch of different resistors. I started with 12K then 22K then 33K. Low to mid range power definatly increases with increased resistance even at WOT. Nothing seems to add power on the top end at all. You can hear it's making more boost but it doesn't pull any harder than stock.
So I decided to hook the 22K and the 33K inline for a total of 55K!!! Gunned it in second gear and flipped the switch. Very nice pull. Rode it up to about 3300 RPM then POW!!!! Very loud pop coming from the left side of the engine. Lost a ton of power, would barely down shift. Got it home and looked under the hood. The down pipe had blown off from the intercooler. Thank GOD thats all it was. Needless to say my heart dropped when I heard that sound. Hooked everything back up and it runs great again. Just gonna keep the 33K inline and call that good. WHEW!! I don't have a boost guage or EGT gauge so no idea what those values were.

I do have a question. Is there something that limits the ammount of boost on these motors. I'm thinking thats why I'm not making any more power on the top end.

Sean
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Old 11-05-2009, 11:06 AM
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I think most guys use a 5.6k
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Old 11-05-2009, 11:11 AM
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Strange that a 33K would do that kinda stuff...odd.
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Old 11-05-2009, 11:13 AM
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There are two ways of doing it. The guys using 5.6Ks are hooking them in parallel with the ICP sensor between the signal and ground. I'm hooking mine in series with the signal line.
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Old 11-05-2009, 11:17 AM
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OH i see! got it.
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Old 11-05-2009, 11:37 AM
wriott
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your flirting with disaster. dont use the resistors. get a custom tuned chip and a set of gauges. if you want to play you gotta pay... if you cant buy the correct things then leave it stock and save up for the correct parts
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Old 11-05-2009, 11:42 AM
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I hear ya. I don't intend to keep the truck this way. I will eventually get some tunes. I just like the fun of tinkering around and making FREE power. I know it's dangerous.
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Old 11-05-2009, 11:54 AM
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Quote:
Originally Posted by wriott View Post
your flirting with disaster. dont use the resistors. get a custom tuned chip and a set of gauges. if you want to play you gotta pay... if you cant buy the correct things then leave it stock and save up for the correct parts
^^^What Will said.

Quote:
Originally Posted by Dudenhymer View Post
I hear ya. I don't intend to keep the truck this way. I will eventually get some tunes. I just like the fun of tinkering around and making FREE power. I know it's dangerous.
Free? ICP sensor's cost about 180. That's the first of several things that can fail with higher than "safe" ICP levels.

Wish I could data log and see just how high ICP gets with this mod, but it fools the computer, thus fooling data log equipment.
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Old 11-05-2009, 12:11 PM
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Does TW = Tony Wildman? How much does a tune from him go for?? Where can I find out details? Thanks.
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Old 11-05-2009, 12:14 PM
wriott
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a chip for a lightly modded truck will run you anywhere from 350 to 450 dollars if i remember correctly
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