http://www.futurlec.com/EPROMProg.shtml

Another member suggested this programmer and it looks to be a decent one at half the price of the pocket programmer. I can't tell if it does eeprom's or not though. I'm going to be doing a tbi setup so it will do the 2732a chips i need but i might want to get craigs dial a chip setup some time. Another quick question, where is the injector constant in teh 747, I can't seem to find it. I'm going to be using 90# injectors and don't really want to turn them into water hoses.I guess i can just turn down the VE tables but won't the WOT calculations be way off since it will have to refer back to the injector constant? As always thanks for your info this is the coolest gear head spot on the net!!:hail:

 

Yes it will do eeproms, it handles every prom chip that the PP2 can and even works with the PP2 software.

 

In winbin it is called "BPW Const for EGR off". Use V8 astro Captians .ecu file form diy-efi.org "7747-mine.ecu"

 

Ohh ok that makes sense i thought that was it but the egr thing threw me off. THanks for the info:hail: :hail:

 

I havent heard anything about that programmer, but for that price I would go for it, I got my PP2 for $129, which was a pretty good deal. I purchased it for laplaza electronics.com, but they do carry them any more.

 

Hey c1500 sounds like you have a pretty mean setup. What kind of throttle body are you runnin. Did you run into any major snags tuning for that much power? i'm makin about 60 or so less hp than you so I don't think i'll have too much of a problem. I have a big block tbi and a 747 cpu i'm retrofiting into my monte. Also does anyone know the formula to convert whatever numbers that are in the BPW table to something i understand?

 

I've got the Holley 670 with 85 # injectors, Ive got the pressure up to 19 psi, but I'm still starved alittle. Advanced tunning is mainly in respect to cam size, my cam won't hit stoich below 1100 rpm. but yours should be good for stioch at all rpms. If you want I can send you my bin file, as there is just to many things to get into in one post.


BPW Constant
Cylinder volume and injector flow rate are combined in this calibration value. A typical value for a 5.7 liter V8 is 135.

Cylinder volume is 5.7/8 or 0.7125L

Injector flow rate is 7.48 grams/sec, (61.22#/hr/injector)

Using the formula BPW = 1461.5 x (cyl vol / inj flow rate )

= 1461.5 x (0.7125/ 7.71 )

= 135

This constant should be changed if injector size or cylinder volume is changed.


So I will asume that you have 90 # injectors

Take 90 # and divide by 8.185 to get 11 grams/sec

then 1461.5 x (0.7125/ 11) = 95 bpw

 

Hey thanks that makes sense now. Yeah that bin would be cool to take a look at. It should give me a good idea of which direction i need to go in. Thanks a ton this is going to save me a bunch of time getting this thing tuned!!