help! convert to ETC/drive by wire

[DURAtotheMAX]

quick question on how to convert a gen III V8 from cable throttle to electronic throttle. I can find a zillion threads all over the internet on how to convert ETC to drive by cable, but nothing really on doing the opposite swap?

Im buying a vortec 4.8 complete with PCM and harness (out of a 99 silverado) to go into my offroad buggy. The 4.8 is pre-2003 so its drive by cable. But the engine in my buggy is rear mounted, and it would be sooo nice to not have to mess around with a clunky/sticky 13 foot long throttle cable...so I want to convert it to drive by wire/ETC.

From looking at the pinouts of a 99-02 4.8 and a 2003 4.8, pretty much everything is identical, the only differences being the way the O2 heaters are actuated, and the 99-02 PCM has wiring for IAC and TPS, whereas the 2003 PCM just has the UART data wires to go to the TAC module.

Here are my questions:

Is there some 512k flash file out there (that I could directly full-flash into the existing 4.8 PCM so I dont have to buy another one) that supports ETC???

IF I have to buy a 2003 1 meg 4.8 PCM to make it work easilly, will the 2003 1 meg PCM plug right into the 99-02 truck 4.8 harness?? And if it will plug in (by grinding off the indexing key on the green connector), the only differences being Ill have to add the 2 pins for the TAC module UART data, remove the TPS/IAC wiring pins, and redo the O2 heater wiring... Is that correct???

Then obviously Ill have to buy a ETC throttle body, a TAC module, and an accellerator pedal assembly, but that should be easy to find and cheap because it seems EVERYONE has ETCphobia and wants to swap to cable operated throttle bodies...

thanks
ben

[chevy052500hd]

I have a throttle body for you if your interested pm me on price. It's off a 5.3it should work out for ya.

Later
Kurt

[GMPX]

Ben, you really need to get an ETC base program.
There is many ETC maps we don't show, if the tables are blank then you will never get it to work.
Your best bet might be to start with a Corvette tune from 2001+ then remap the fuel / spark to suit the 4.8L. You will need to get the correct Pedal and TAC for whatever tune you decide to run with.

Cheers,
Ross

[Highlander]

Show more tables for the ETC!!!! I wish i had more control over the traction control portion to act as a Launch Control.... Like the new GS/Z06/ZR1 have

[MICK]

Show more tables for the ETC!!!! I wish i had more control over the traction control portion to act as a Launch Control.... Like the new GS/Z06/ZR1 have

I want these ones...


ETC Acceleration Rate Low Speed Threshold = KPH

ETC Acceleration Rate High Speed Threshold = KPH

ETC Low Speed Acceleration Rate = KPH/Per Second

ETC Med Speed Acceleration Rate = KPH/Per Second

ETC High Speed Acceleration Rate = KPH/Per Second

Add 10% to these ones and see what happens to your back tyres.

[Highlander]

if you know where they are located, you could however make a cax file and what do these do exactly?

[DURAtotheMAX]

would it be possible to just swap to a 2003 4.8 truck PCM? That way I wouldnt have to copy a zillion tables to make the corvette tune into something that would work with the 4.8?

Would the 4.8 truck PCM work fine with the existing truck drive by cable harness, provided I add the few extra wires for the TAC module?

thanks for the help
ben

[chevy052500hd]

should work fine, did that in a s-10 swapped from the vortec box to a 1mb everything worked out fine for me.

[DURAtotheMAX]

alright so time to find a TAC module, 4.8 throttle body, and 1 meg PCM...

[samh_08]

x2 on showing more ETC tables...Even if you have to give them with a 'Alter these at your own risk' warning .