DIY Smoke Switch for 1998.5 - 2000 24V CTD's

cumminalong · 01-10-2009, 11:09 AM

Okay folks, I was helping another guy out that wanted to do a smoke switch, but he didn't know how to do it.

After a ton of searching, I couldn't find a good write up or DIY for the 1998.5 - 2000 CTD, which has a different MAP sensor layout then the 2001 - 2002 24V's.

So, after a little bit of research and a little bit of math, here is what you need to do to do a smoke switch on an early 24V CTD.

NOW, you MUST have a boost fooler, Edge Comp, Quadzilla Adrenaline or other boost fooling type box for this to work. If not, the engine gets a dead pedal condition, as it defuels for safety and it defeats the purpose. So if you don't have a box or other boost fooler, this WILL NOT work for you.

The items you need for this mod are cheap and easy. You need a 2 pole on/off switch, a 10 or 33 ohm resistor, a few feet of 18 or 19 gauge wiring, 2 wire taps or your choice, and 2 spade connectors to connect to the switch you are using. Total of maybe $10 - $15.

Here is what you need to do....

First, let's identify what's different on the 1998.5 - 2000 CTD MAP sensor. All it is, is the shape of the plug and the wire layout. The early 24V's have a round / triangulat shaped connector on the MAP sensor that looks like this:

The wires that are associated with this sensor are like this:

Now, lets look at how this gets laid out....

You have your map sensor and the wiring that comes out of it and the switch that gets mounted in the cab.

What you need to do is tap into the (A) and (C) wires and run those wires to the switch. What this does is send a FULL BOOST signal to the ECM and this allows it to dump fuel.

BUT, this WILL trip your CEL if it's left on for too long. You'll get a code for Boost Too High For Too Long. This code is a soft code and will go away after a few start cycles and it will not put the truck into limp mode or anything like that.

So, what we need to do is add the resistor, to tell the ECM that we are getting ALMOST full boost and this prevents the CEL from coming on. This is where the 10 or 33 ohm resistor comes into play. The lower the ohms, the higher the signal that gets sent to the ECM, the more boost that it sees.

It needs to get wired into either one of the wires the are running to the switch, it doesn't matter which one you use.

Once these connections are made and you hit the switch, the truck will dump full fuel at low boost and you can turn day into night on command.

Just be careful using it and watch your EGT's, as they will come up quickly.

Again, you MUST have a boost fooling device to do this, otherwise the truck just defuels and it defeats the purpose.

Enjoy!

__________________
'06 Ram 2500 CTD - 742 HP / 1456 TQ
Powered by: Doghouse Diesel Performance

georgewbushing · 01-16-2009, 09:58 PM

just a thought.. but couldnt you use a variable resistor in place of the switch and resistor. a variable resistor that can we switched back to say an off position. just a thought. as like a variation from this.

wv/5.9/6.7 · 01-16-2009, 10:57 PM

I was wondering if it would hurt anything if you were driving up the road and turn the switch on.

__________________
07.5 2500 TRX-4 6-sp manual H&S XRT & 5" TB Exhaust to 6" Black Stack leveling kit 315-75-17 procomp extreme M/T's b&w hitch line-X bed liner mp-8 in dash dvd limo Firestone Air Bags hid lights SB3600 DD SFI

georgewbushing · 01-16-2009, 11:29 PM

it probably wouldnt hurt anything. it would just really quickly think it was getting full boost.

SootKing · 01-16-2009, 11:31 PM

getchya lots of sooot! rip the switch and watch it roll baby!

__________________
P-pumped 02 graphite,short bed,fass 95, KMC ambush 22's,100 horse sticks,icebox S&B, banks brake, NEW 215 p pump, 4gsk, laser cut dv's, 24 degree timing, street cam, DSS and solid steel 3rd gen trac bar, leveled, Fleece suncoast transmission, HID's, 8 in CAT stack

georgewbushing · 01-16-2009, 11:33 PM

hell yes! mooorrrreeeee soooootttttt!!!!!!!!!

racerguy88 · 01-17-2009, 05:09 AM

Can this be done on a 2002? Is an Edge EZ a boost fooling device?

__________________
2002 Ex-cab, longbox, 4wd, Sport, Leather, all the bells and whistles,Edge EZ, HX35 w/ boost elbow, strait piped, BHAF, MY FIRST CUMMINS YAY!!!

cumminalong · 02-02-2009, 10:21 PM

Here's a small addition for those that are running a boost fooler or stand alone box.

You must bypass those devices and send a signal strait to the ECM from the MAP.

Otherwise, you're fooling device actually LOWERS the signal to the ECM and this defeats the purpose of the switch.

__________________
'06 Ram 2500 CTD - 742 HP / 1456 TQ
Powered by: Doghouse Diesel Performance

01-10-2009, 11:09 AM	#1 (permalink)
cumminalong TECH SPECIALIST Join Date: Oct 2006 Location: East Alabama Posts: 492 Thanks: 1 Thanked 32 Times in 9 Posts cumminalong's Truck Pics	DIY Smoke Switch for 1998.5 - 2000 24V CTD's Okay folks, I was helping another guy out that wanted to do a smoke switch, but he didn't know how to do it. After a ton of searching, I couldn't find a good write up or DIY for the 1998.5 - 2000 CTD, which has a different MAP sensor layout then the 2001 - 2002 24V's. So, after a little bit of research and a little bit of math, here is what you need to do to do a smoke switch on an early 24V CTD. NOW, you MUST have a boost fooler, Edge Comp, Quadzilla Adrenaline or other boost fooling type box for this to work. If not, the engine gets a dead pedal condition, as it defuels for safety and it defeats the purpose. So if you don't have a box or other boost fooler, this WILL NOT work for you. The items you need for this mod are cheap and easy. You need a 2 pole on/off switch, a 10 or 33 ohm resistor, a few feet of 18 or 19 gauge wiring, 2 wire taps or your choice, and 2 spade connectors to connect to the switch you are using. Total of maybe $10 - $15. Here is what you need to do.... First, let's identify what's different on the 1998.5 - 2000 CTD MAP sensor. All it is, is the shape of the plug and the wire layout. The early 24V's have a round / triangulat shaped connector on the MAP sensor that looks like this: The wires that are associated with this sensor are like this: Now, lets look at how this gets laid out.... You have your map sensor and the wiring that comes out of it and the switch that gets mounted in the cab. What you need to do is tap into the (A) and (C) wires and run those wires to the switch. What this does is send a FULL BOOST signal to the ECM and this allows it to dump fuel. BUT, this WILL trip your CEL if it's left on for too long. You'll get a code for Boost Too High For Too Long. This code is a soft code and will go away after a few start cycles and it will not put the truck into limp mode or anything like that. So, what we need to do is add the resistor, to tell the ECM that we are getting ALMOST full boost and this prevents the CEL from coming on. This is where the 10 or 33 ohm resistor comes into play. The lower the ohms, the higher the signal that gets sent to the ECM, the more boost that it sees. It needs to get wired into either one of the wires the are running to the switch, it doesn't matter which one you use. Once these connections are made and you hit the switch, the truck will dump full fuel at low boost and you can turn day into night on command. Just be careful using it and watch your EGT's, as they will come up quickly. Again, you MUST have a boost fooling device to do this, otherwise the truck just defuels and it defeats the purpose. Enjoy! __________________ '06 Ram 2500 CTD - 742 HP / 1456 TQ Powered by: Doghouse Diesel Performance

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01-16-2009, 09:58 PM	#2 (permalink)
georgewbushing Newbie Join Date: Nov 2008 Location: indiana Posts: 12 Thanks: 0 Thanked 0 Times in 0 Posts georgewbushing's Truck Pics	just a thought.. but couldnt you use a variable resistor in place of the switch and resistor. a variable resistor that can we switched back to say an off position. just a thought. as like a variation from this.

01-16-2009, 10:57 PM	#3 (permalink)
wv/5.9/6.7 Cummins Nut Join Date: Jan 2008 Location: Pipestem WV Posts: 328 Thanks: 0 Thanked 1 Time in 1 Post wv/5.9/6.7's Truck Pics	I was wondering if it would hurt anything if you were driving up the road and turn the switch on. __________________ 07.5 2500 TRX-4 6-sp manual H&S XRT & 5" TB Exhaust to 6" Black Stack leveling kit 315-75-17 procomp extreme M/T's b&w hitch line-X bed liner mp-8 in dash dvd limo Firestone Air Bags hid lights SB3600 DD SFI

01-16-2009, 11:29 PM	#4 (permalink)
georgewbushing Newbie Join Date: Nov 2008 Location: indiana Posts: 12 Thanks: 0 Thanked 0 Times in 0 Posts georgewbushing's Truck Pics	it probably wouldnt hurt anything. it would just really quickly think it was getting full boost.

01-16-2009, 11:31 PM	#5 (permalink)
SootKing Diesel Head Join Date: Feb 2008 Location: hamilton county, IN/West Laf Posts: 2,179 Thanks: 70 Thanked 20 Times in 20 Posts SootKing's Truck Pics	getchya lots of sooot! rip the switch and watch it roll baby! __________________ P-pumped 02 graphite,short bed,fass 95, KMC ambush 22's,100 horse sticks,icebox S&B, banks brake, NEW 215 p pump, 4gsk, laser cut dv's, 24 degree timing, street cam, DSS and solid steel 3rd gen trac bar, leveled, Fleece suncoast transmission, HID's, 8 in CAT stack

01-16-2009, 11:33 PM	#6 (permalink)
georgewbushing Newbie Join Date: Nov 2008 Location: indiana Posts: 12 Thanks: 0 Thanked 0 Times in 0 Posts georgewbushing's Truck Pics	hell yes! mooorrrreeeee soooootttttt!!!!!!!!!

01-17-2009, 05:09 AM	#7 (permalink)
racerguy88 Newbie Join Date: Apr 2007 Posts: 25 Thanks: 0 Thanked 0 Times in 0 Posts racerguy88's Truck Pics	Can this be done on a 2002? Is an Edge EZ a boost fooling device? __________________ 2002 Ex-cab, longbox, 4wd, Sport, Leather, all the bells and whistles,Edge EZ, HX35 w/ boost elbow, strait piped, BHAF, MY FIRST CUMMINS YAY!!!

02-02-2009, 10:21 PM	#8 (permalink)
cumminalong TECH SPECIALIST Join Date: Oct 2006 Location: East Alabama Posts: 492 Thanks: 1 Thanked 32 Times in 9 Posts cumminalong's Truck Pics	Here's a small addition for those that are running a boost fooler or stand alone box. You must bypass those devices and send a signal strait to the ECM from the MAP. Otherwise, you're fooling device actually LOWERS the signal to the ECM and this defeats the purpose of the switch. __________________ '06 Ram 2500 CTD - 742 HP / 1456 TQ Powered by: Doghouse Diesel Performance