Quote:
Originally posted by 88GT5.013.02:
What I am saying is that boost is not set in the computer. A diesel motor is very different than a gas motor. The boost is determined by other levels that are upped in the motor. The chips increase boost by upping fuel requirements. There are mods you can do to trick the computer into thinking it has boost as idle to have more acceleration. This mod uses a check valve to hold pressure against the MAP sensor and fools it into thinking it has boost at idle already, in turn the computer dumps fuel as if it were pulling boost. You can pump tons of fuel into a diesel and make it run mad, as long as the EGT's don't get drastically high.
Unit don't call me a ricer. I am the farthest thing from it. Have you ever done any calibrations with a computer or any kind of sensor programming? I bet not, and if you did you could believe that 100 fly-wheel horsepower is not impossible. It is definitely a spectacular feat, but not impossible. I know it sounds far fetched, but nothing is impossible, and I don't know exactly how "stock" this mustang was. It was a test mule. So who knows.
Boost is not a set number, and go to www.Ford-Diesel.com and see that every truck is different as far as boost levels go. I have seen stock '97 PSD's go to 19-20 lbs of boost with a conical filter and straight piping the exhaust. Putting a different downpipe on nets another lb or two of boost.
Please don't flame me, I have a PSD, and I have researched into chips and many other things. Think about what I said, the chip does not itself increase boost to a set number, but increased fuel and airflow in and out of the motor increases boost. The turbo just works off of the efficiency of the motor, more fuel in a diesel means more heat, and more heat is better for a turbine (which is essentially what a turbo is) which is translated into more boost, if sufficient air volume is there.
Jason
[This message has been edited by 88GT5.013.02 (edited 05-11-2001).]
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The fact that you have a PSD makes it even worse....the ECU of a PSD
DOES control the wastegate which limits the amount of boost that is produced. Adding intake and exhaust to a PSD will increase boost levels, but not by that much. The ECU
"senses" better airflow into the engine and adjusts the wastegate accordingly. Exhaust will raise boost levels because the turbine doesn't have to work as hard to expel the exhaust gases(back pressure on a turbo engine is bad). The turbo will spool quicker and therefore be able to reach slightly higher boost on the same wastegate settings. The chip alters the computer control of the wastegate
AND adds more fuel to compensate for the added boost levels. You really need to do more research on how turbos work if you think by adding fuel boost levels will go up.
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90 Honda CRX aka
Project Mongoose
Estimated Completion: 7/1/01
453 horses with a stock head...built head and LSD on the way
84 Toyota Supra
High flow cat, two chamber flowmaster, custom 2.5" piping, msd 8.5mm wires. Will have boost before 2002.
Have HKS turbo manifold for it
.....T04e next week