New TBI Controller (Flash Memory-No more chips) laptop programable

[Blue 82]

One of the members here asked about tuning a sbc400 TBI
I had replied that it's a major PITA to get em to run right (not impossible, just a royal pita)
I think with this setup there may be hope for the TBI

I'm in the process of building a mild 350 TBI for a 1989 SWB 4X4 GMC
I did not want to stray from the limited known parameters, for tuning ease and functionality.
I started looking into Data Logging stuff and perhaps some chip burning eqipment
(vs working with a tuner burning my chips with turn around times etc.....)
I can pick up most of the stuff forr the price of a "good" carb,
But tuning a TBI is very time intensive to get em "right"

I stumbled upon this in my quest
With a Flash Mem, you should be able to make changes very quickly

This looks interesting
http://www.dynamicefi.com/

Here's what they say you can do with it
http://www.dynamicefi.com/EBL_Flash.php

Here's some info on tuning
http://www.dynamicefi.com/Tune_Intro.php

[Stewart G Griffin]

For anyone thinking of running efi:

a) more power to you.  Don't give up.

b) And i acknowledge that efi is (slightly)superior to carbs.


However, due to the above reasons mentioned by blue, these are the reasons why i will be running carburetion for a long time.

[VileZambonie]

Carburetors are good for racing and weekend warriors...TBI (although not in the least the best most efficient design) whoops carburetion in the . There's a few data loggers that say you can reprogram with their software. A friend of mine is using one right now for an obdI he has. He called me about it this weekend, I will have to ask him again which software he used but said it worked mint.

[Captkaos]

There are a lot of these out there now.  http://www.moates.net/index.php?cPath=73_64 has all the stuff for the Pre 96 ODB stuff.

[Blue 82]

A lot of guys at Thirdgen are using the Moates stuff, but it seems to be burn and log, then repeat.
Maybe they are using the older stuff, I don't know for sure.
Of course there's gotta be lots of logging with either system, to get it right.
I'll check around for feedback on the Dynamic system.
I'd ideally like to get one of em up and running before i pull the engine in the now running truck, to see how it works and work out any glitches (most likely on my part).

Either way I go the learning curve is gonna be steep, but I think I can handle it, given the time to learn it.

[Jim Rockford]

Only real thing bad about TBI is the stock swirl port heads. That is the biggest hold back. Lotta full size jeep guys(401,360 AMC wagoneers and cherokees and j trucks) Love GM tbi retrofit kits, they work great.

[Blue 82]

Since I'm building a low rpm torque motor for a 4X4 that pulls the boat etc.....
I doubt the engine will see much above 4500 rpm
Good economy and torque is the goal here.
I have a bunch of SBC heads, but I think the 193's will fit the bill for this application
I did a little bowl work to the 193's

[Stewart G Griffin]

i continue to proudly and without regret use carbs----2G, quadrajet, dualjet, holleys on rare occasion and even webers if i get around to it.

However, this topic got me thinking more;  Would it be possible to get the complete setup (from stock factory electric pump to the actual computer to the injector system from a wrecked vehicle), set it up at home on a test stand, run it and then therefore it really would be plug and play when it came time to install it?  No more tweaking and trying to figure everything out (which takes A LONG TIME).

b) why hasn't anyone come up with a complete plug and play system.  Or have they already---the holley an edlebrock systems?

[VileZambonie]

There is, you have to understand every engine will perform and combust differently. A feedback system is the best method of fine tuning your air fuel ratio's. Your base map is what really needs to be "tweaked" and figured out. The fine tuning can be done on the fly by your computer through it's block learn and adaptives. Playing with ignition timing and fuel metering is what everyone's been doing with carb'd engine's all along. This is the same idea just more precise and more broad.

[Jim Rockford]

Most aftermarket F.I. systems like the holley and edelbrock are really  overpriced for what you  could pull from a junkyard or buy a donor car and redo the factory harness for , I regularly swap in LT1's and redo all the harness work myself, and not pay some guy 600 bucks for maybe 2-3 hours worth of work.

[Blue 82]

This gives the Guy that has a TBI vehicle a chance to tune in real time instead of burning chip after chip.

I like the TBI stuff, while not the latest, greatest or best
it's cheap, reliable and easy.

No Fat chick jokes please