resistor mod

[carrier_Joshua]

okay i tried this today. i have read a lot about this and decided to give it a try. i started off with a 10k and worked my way down to a 1.5k.

i do not see much difference though even with the 1.5 in. it does not lope any different than it does from stock. and i also do not get as big as a puff of black smoke i see in peoples videos.

i used two t taps to the two wires off the sensor.
ran them to the cab and wired them to a switch.
then i cut one wire and spliced in a resistor.

did i do something wrong

[ChillMark]

okay i tried this today....
i do not see much difference though even with the 1.5 in. it does not lope any different than it does from stock. and i also do not get as big as a puff of black smoke i see in peoples videos.

==========
I am halfway into getting my resistor mod set up. Today I got my wire from the sensor into the inside of my van. I am curious why no one
has mentioned using a potentiometer. I will most likely try one after I play
with resistors.

Anyway Josh, to me it sounds like you may not have a good connection
with your T taps. From what I have been reading, you should definately see a difference in performance. However, I did see a couple of posts that said no big idle issue and not alot of smoke.

Check your connections.

$$MF
'02 E-350 PSD 7.3

[carrier_Joshua]

yea just checked the t taps and they did not have a clean cut through the insulation on the wire. now i am noticing some power and a little smoke to play with too. thanks for the help.

[ChillMark]

I am by no means a mechanic in any industry. I'm just dumb enough to try things I see here.

I got my set up completed last night with a rotary switch that lets me select between 5 resistors. 3.9K, 4.7K, 5.6K, 7.8K, 10K and OFF.

I DO know that the only setting that might give me results is 5.6K. But I have not been able to do any actual testing. For the time being, I will say that 5.6K seems compareable to the OFF position. I did not notice any engine loping nor any smoke.

The other settings gave a very noticable lope to the point the engine would barely run at idle. The van would barely move at any accelerator position. I could have pushed my van faster.

I already seem to have good acceleration...I wonder if the previous owner installed a chip. ???

So, at this point I will eventually do testing compareing OFF to 5.6K. As I said previously I don't see a big difference yet. I keep tabs on my fuel mileage so I will be sure to mention in later posts if 5.6K gives better or worse MPG results than stock.

$$MF
`02 E-350 PSD 7.3

[carrier_Joshua]

i have mine set up so i can change out the resistors right in the cab. i have ran the 1.5 all the way up to the 22k but i like the 4.7 the best any thing lower the throttle response is too touchy. i can get some smoke on the 5.6 just nothing major you kind of have to pedal it quite a bit if you know what i mean. the 4.7 smokes quite nicely too. hahaha

[ChillMark]

Hi Josh,
Throttle response is too touchy? I am not having that issue at all. When I romp on the pedal it just seems to give it a little bit more idle without the lope. No power what so ever. No smoke at all using any resistor setting.

I did play all day Sunday trying to compare OFF to 5.6K and decided that I will just leave it OFF until I have time to tear into it. (a van, so it's no easy doing). I need to double check that I wired to the correct pins. My "service engine" light is also on, but I am sure it will go out after starting and driving several times (25 I think).

I still have a feeling the previous owner already reprogrammed this Powerstroke because in the OFF position I have good response and when I romp on it a little smoke comes out (most noticable at night with headlights behind me). I took a look in the obvious places but have not found anything that says Bully dog or anything.

I hope to play with it some more during my vacation next week.

OH! Also, I noticed that I have to shut the key off prior to changing my resistor settings.

$$MF
`02 E-350 PSD 7.3

[carrier_Joshua]

yea if you were changing the resistors as long as you switch it right and you have it in the off position you will be fine but if you have current running through the resistors and you take it out you will get a check engine light

[CT Performance, Inc.]

Much better and safer to get a custom chip from TW...

[carrier_Joshua]

yea i totally agree. eventually in the long run i want to do a chip along with many other upgrades. but for the few dollars it cost to do i had to try it out. by no means would i drive around with the resistor on all the time. i think that is just asking for problems, but flicking the switch every once and a while to have some fun blowing some smoke in a ricers window makes it worth it. haha