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Howdy, I was just wondering(also doing some reading) about the ATX. IT is Electronically controlled, so is there any way to wire a resistor inline with the circuit controlling the Line Pressure to the ATX(Doug Lewis can do this with the V8 SHO trannies, so I am wondering if it is possible with our trannies?) This shoudl be possible, especially with all the talk of increased perfromance just from a superchip install(increased shift firmness and changed shift points). Just doing some thinking on how to modify the old slushbox before I try to convince the fiancee that Nitrous is AOK..  ..LOL.. any input would be appreciated(also if anyone has a wiring diagram for the ATX's) Thanks!! 
Tony Blatnica
99 Contour SE-Sport 2.5ATX
SVT Exhaust - Removed resonator
TH-Fix
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Putting in a chip is probably the best electronic upgrade you're going to be able to do for the tranny. I haven't read about the resistor mod for the SHO trannies, but they are different.
Any links for that mod, Tony?
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Joined: Sep 2001
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Heres a link SHO Drag Times If you scroll down to the Randy McCante part, heres a quote:
You switch the system on by flipping two switches. One for the nitrous and the tranny modification (I substitute a 10 ohm resister for the EPC circuit, this makes the tranny run at max line pressure), the other is for the computer chip. The chip has two programs, one for street and one for nitrous. On the street side, the engine management is set for max performance. With good timing and fuel maps for power and performance. The nitrous side takes a ton of timing out to keep the motor safe under fire. It also runs the motor rich and shortshifts the tranny a couple of hundred rpm.
Lets see.. Is anything like this possible? Any ideas.. toss em in out up down..
Tony Blatnica
99 Contour SE-Sport 2.5ATX
SVT Exhaust - Removed resonator
TH-Fix
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Max Tranny pressure will keep the clutch plates from slipping under heavy load, but also causes the trans to absorb more horespower. If it is not slipping under present conditions, you wouldn't want to waste HP on making oil pressure in the trans. You really want the right pressure, not necessarily the max pressure. my 2 cents.
"My Name is Richard. I am a Contouraholic."
1999 SE Sport Duratec ATX Spruce Green; Drop--In K&N Filter; VentShades;
Fog Lamp Fix Mod & PIAA510s with Bumper Braces & Stock Type aiming screw mod;
PIAA 9006 Super White Headlamps
AIWA CDC-MP3 HU; WeatherTech Mats
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Okay, it looks like the 10Ω resistor fakes out the PCM line pressure sensor and makes it make the tranny put out more pressure. I don't think that is a good idea on the 95-96 CD4E's since they have a problem with blowing gaskets. Maybe 97+ trannys should be fine. I wonder what kind of torque we would have to be at in order to start worrying about tranny slippage. Maybe we could get a 10Ω pot to play with and see how she feels? Hmmm.....
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On the Ford probes we had an equivalent mod...Except we just cut off the IAT sensor with an inline SPDT (on/off) switch.
What would happen is during shofts the fuel cut was remover and line pressure was at full, so instead of the car backing off during shifts, it pulled hard, and allowed the car to even break loose the tires in that 1-2shift. By cutting the IAT the car would act as it does when cold, and max line pressure to resist possible freezing, but when the IAT sensor would read higher than 50deg, the line pressure decreased and the fuel cut was activated during shifts. On the 93-95 OBD1 cars, when you hit the switch the CEL came on, and when you hit the switch again, it would go off...with an OBD2 car the CEL would stay on. We also had a VAF not an MAF in the probes.
I know this isn't exactly the same as what's above, but it's the same idea. It took off .4 from my stock 1/4 mile, and between .2-.5 off other probe GT ATX's...
And with a high stall performance torque converter for higher RPM launches and firmer shifts, and a shift kit, to firm shifts more, and also an external tranny cooler to keep ATX temps even lower, you could drop your 1/4 mile times by close to a second putting you in line with an equivalent MTX.
Oh well...that's all...
1995 Probe GT ATX TOO MANY MODS 1999 Cougar V6 MTX Stage 1: (Basic Mods)B&M STS, Bassani Exhaust, KKM intake w/ weapon R pipe, ProFlow 75mm MAF w/optimiser, YoDude Y-pipe w/hi flow cat, SVT TB, SVT Upper IM, OMP FSTB,AF gauge, Aerogear fiberglass hood (completed) Stage 2: (Top End Work) 19-24lb injectors, P&P heads w larger valves and HPC coated, P&P and port matched lower intake manifold also HPC coated, custom ground cams, Ford Racing 9mm wires, Bosch +4 plugs, Custom burned PAC or Diablo chip (will dyno with both), Apexi SAFC (In Progress) Stage 3: (Transmission) Quaife LSD, CM stage 3 Clutch, Fidanza flywheel (In progress) Stage 4: (Suspension)Koni adjustibles, H&R springs, Progress 21mm rear anti sway bar (Installing on Tues) Current dyno: 172.9 whp with just bolt ons and stock exhaust manifolds (not gutted), oh, and bad wires  ...
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More than just a one simple change required, if you want the ATX too make pass 100k miles. I've had TSB 98-13-11 done to mine when new, intermittent 1st-3rd that was so hard it would bounce the dashboard. That required Different Servo and many lines of programming patch. And it still gets confused??? Look into TransGo's upgrade kit instead. http://www.txchange.com/sk.htm It's been engineered for quicker more positive shifts. This is mechanical/hydraulic only. so I've been told. Still the components will only handle minimal horsepower. Ever see our ATX out of the vehicle on the garage floor? My John Deere lawn tractor's Hydro almost as big. I have a cousin in the transmission business and says this ATX has been engineered to just meet the factory output and that's questionable. Raising pressure makes it worst and shortens life by Oh let's say by 80-90%. Remember cars are engineered to meet the companies bottom line, so if you want to race, someone going to have built one from the ground up. Majority of ATX's are designed this way, nowadays, it's all about the bottom line. Terry Haines???? $50k-$200k enough for one prototype? Paul Echelberger N8BUU
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