This thread begins with my truck (93 5.7 stock TBI) having a too free flowing exhaust. The Check Engine light is always on because of the lack of backpressure for the EGR system. Basically, I've tolerated it for too long, and I've started looking at my options, which are..... Not Good.
As I understand it:
Burning / Reburning the stock chip is a PITA and simply not practical.
Switching to a flash based chip instead of the oem UV chip is recommended, but I need appropriate support hardware. Everyone recommends Moates. It looks like Moates has gone out of business.
The third and most drastic option is to rip out the stock PCM and replace it with something completely aftermarket such as a Megasquirt or a Speeduino. However this could be fairly expensive, and what I'm seeing on google suggests that running it with a 4L60E may be either unworkable or extra expensive.
Any thoughts on what is available and reasonable? For today, I'd just like to turn the EGR check off. That said, a 383 is on the someday list, and it'd be nice to future proof it a little.
Also, just FYI, I'm seriously not interested in an LS. Yes it's better, yes it's probably easier, but I personally just want to keep the TBI for my own personal selfish reasons.
As I understand it:
Burning / Reburning the stock chip is a PITA and simply not practical.
Switching to a flash based chip instead of the oem UV chip is recommended, but I need appropriate support hardware. Everyone recommends Moates. It looks like Moates has gone out of business.
The third and most drastic option is to rip out the stock PCM and replace it with something completely aftermarket such as a Megasquirt or a Speeduino. However this could be fairly expensive, and what I'm seeing on google suggests that running it with a 4L60E may be either unworkable or extra expensive.
Any thoughts on what is available and reasonable? For today, I'd just like to turn the EGR check off. That said, a 383 is on the someday list, and it'd be nice to future proof it a little.
Also, just FYI, I'm seriously not interested in an LS. Yes it's better, yes it's probably easier, but I personally just want to keep the TBI for my own personal selfish reasons.