Cheapest solution: Buy a serial to USB cable from anywhere on the net. Look for a 12V power supply with a low AMP rating (I can't remember off hand what I used) with a plug that will fit your Predator. You might even have something around the house that will work. Just make sure the AMPS are low ...

Look at it this way, if you keep your foot out of it and gain 1/4 a MPG on average with 93 octane over 87 then you are saving roughly 6.5 gallons of gas each tank (with a 26g tank) which translates to roughly $19.5 a tank (for the 93 stuff). All the while this had cost you an extra $9 a tank which ...

I have heard loss of torque "problems" associated with going too big on the exhaust or having duals on these 4.8s and even 5.3s. If there is a way you could reduce the the size of the pipes coming off your muffler (outlet) you will get some of the torque back. These engines breathe pretty well so ...

Well lets just say it runs like a scalded dog at -4. I think I will leave it the way it is. PE scares me a little because I figure a good hard pull with a load on it could potentially kill the motor if adjusted too high. At least WOT at -4 produce a similar engine "scream" to when it is at -2 with ...

1999 Silverado, 5.3 V8, 93 Octane tune modified with minimal Torque Management (thanks to you guys ï

What if I modified a methanol injection kit to run 100% of the time and adjust the flow rates with a vacuum switch? Use one of those kits that uses common wiper fluid. Hypothetically I could modify a 93 tune and use the methanol injection while running run 89 octane.

I dunno just my crazy idea for ...

93 octane tune with TQM reduced all the way (thank you again johan!) and all the other shifting parameters left stock (except pressures). Also have injector slope bumped up (-2) to balance my LTFTs.

I average 19 on the first half of my tank and 20 on the second half to give me (duh) 19.5 average ...

Oh yeah, well let me correct myself, I am using the correct interface as I threw the one I used at home on a disk and brought it to work with me.

Yep, lol, it so frustrating the only thing I can thing of is a problem with the cable or baudrate

Tried it nothing. Any other ideas, baudrates?

Tried Uploading a Tune to my PC at work. Used standard serial cable and appropriate power adapter. Set to COM 1, baurate of 57600. No communication. Tried COM 2 setup, same thing. Any ideas?

Thanks!~

1. Try going all the way to the bottom of the list or parameters, u should see injector slope and Torque Management and stuff like that. I think its the last item.

I have mine at
1>2 = +5
2>3 = +10
3>4 = +20

2. If that doesn't work or you can't find it then try changing Downshift MPH higher on ...

Ops! Let me move the decimal over a spot...

I meant 12V @ .75 amps (It reads 750 mAmps)

YES! I have one that is 12V, 7.5 amps! Whohoo! Well I found the old one anyway, but its nice to have a spare. Thanks mikel.

Nevermind, when all else fails, read the instructions right? Duh!