mike: QUIT ADDING TO THE CONFUSION WITH FACTS AND PHYSICS..... :shock: LOL

I just put four tornados in series in my truck and i'm getting 65 mpg.

Above is actual proof. Why don't car manufacturers install tornadoes?

But seriously, running slightly lean at cruise (maybe 15.2:1) should in theory ...

What about those EFIE (Electronic Fuel Injection Enhancer) devices which are suppose to allow you to lean out the engine by changing the output voltage of the O2 sensor (supposedly the PCM sees normal values, but you are really running lean)? I understand that O2 works best at 14.7:1, but would ...

Sure doesn't . Anyone try skewing O2 output?

Was the same question, sorry. Here is another one. Is it possible to make the PCM go slightly lean when cruising with the possible adjustments using the predator? Would a custom tune be overly complicated?

From what I understand, IS is a constant factor in the fuel delivery equation while LTFT is variable. Won't LTFT change to the "needed" value once the vehicle has been driven for a while to correct for the wrong IS value and so it would not really make a big difference if IS is correct?

So what is the point in adjusting the injector slope if I keep the stock injectors?

Hello,
The tutorial states to adjust the injector slope so that LTFT is within the -2 to 0 range. At approximately what AF ratio does this make the car run at part open throttle (cruising)? Can it be checked with U7193 (9r01)? As a slightly rich mixture is for maximum power and slightly lean for ...

The website states the 87 tune is available for trucks. I am sure that a custom 87 tune can be installed.

Hello,

This question is along the lines of this post.

If you enable pin 42 in stock tune and I install it on the car, will it still work after I install the 87 tune (assuming it will as 87 tune should not modify pin 42 enable values)? Thanks.

I purchased the car from a small local dealership (all makes), I am sure that they did not flash the ECU. Thanks.

I bought a used vehicle from a dealer and want to use the Predator. Is there any way to check if the current tune on the vehicle is stock (I have not used any programmer on this vehicle yet)? Thanks.

Hello,

Without going to the dealer to have the ECU re-flashed, is it possible to check if the stock tune on the car (GM truck) is really stock? All I have is U7193 and can connect it to a PC. Thanks.

For anyone else who is interested the answer can be found here:

http://www.silveradoss.com/forums/index.php?showtopic=45645&st=0&gopid=531884&#entry531884

In summary, pin 42 is used to turn on fans on low speed and 33 on high. Works similar to the B-body setup except fans have two speeds.

Is the latest version of U7193 the only version that can be updated without sending it back to you? Thanks again.

Hello,

If I purchase U7193 today from DiabloSport website will I get the new unit that can be Internet updated or are they not yet available? Thanks.