First of all, I've been searching on old posts and am learning alot bt I have a few more questions for you guy's.

I've been toying with the initial spark advance *distributer setting* and brought it up to 8.01 from 5.98. I changed it back because it screwed something up in throttle response worse than it was before, so I set it back. I'm wondering what I could change to help with this problem? Full throttle is better than the original 305 was but I still ran a best of 15.1 @ 93mph with these mods....

450HP Golens Engine Service 383
All the freebies
TPIS Big mouth, ACCEL runners, and plenium all SIAMESED
30lb injectors
Holly in tank fuel pump
SLP 1 3/4 coated headers
3 1/2" header back exhaust
4thgen 1998 WS6 rearend w/323's
Competition Engineering adj. drag shocks
Custom LCA's
Eiback drag springs with airbag
Lakewood adj. panhard rod
Energy suspension polyurithane everything
Stage 3 700R-4
SLP 24-2800 stall
17x9.5 front ZR-1's
17x11 rear ZR-1's
powder coated white
With Dunlop SP2000 tires
Phantom Fuel pressure/tranny temp guages on dual pillar.
Hotchkis tie rod sleeve
KYB front rear sway bars
ASCD SS Hood
SSM subframe connectors
Edelbrock Strut Tower Brace
Throttle body airfiol
AFPR TPIS
MSD 6A box
MSD 8.5 Super Conductor wires
MSD High Vibraton Coil
Flowmaster muffler *not sure what model*
Tranny cooler
Oil cooler
Goodyear Hi Miler cooler hoses
200 NOS kit *not installed til I learn about this **** though*
Skulte wheel spacers in front
Modified airbox
Lakewood drag struts
V-6 springs in front
Hypertech underdrive pully's
K&N filters <---100HP @ least right there)
Accel cap rotor
Accel ignition module *I think thats what it is*
RedLine synthetic fluids, and water wetter cooling ****.
4 wheel disc
AIR CONDITIONING from a donor car
I know I'm forgetting alot of ****.

I've been doing good with my chip burning process but am kind of stumped with this problem because I'm new. I dont have a cable yet so data logging is not an option yet. I'm not getting any codes and replaced every sensor in the car when I did all of the upgrades. I was reading one od tims posts about PE and how it causes some of these symptoms I'm suffering from so here are my questions...


1. How do you adjust the power enrichment for more efficent engines properly? I've noticed it has the option to give or take every 400rpm. By increasing the numbers do what happens?

2. Alot of people say to experiment with my spark table to see what works. Do I change every number in the main spark advance or extended spark advance? Or both?

3. Is there a way to make my knock sensor a little less sensitive with winbin and still be safe?


I have a 1991 Z28 TPI
ECM 1227730
I'm using WINBIN

It just feels like the car is giving up at high rpms.

 

I can't help you on all the hard questions but I believe I can help you with the scanner issue. Have you heard of Craig Moates program E6? I believe it works with the 730 ECM, although I have never tried. Do a search for Craig Moates and you'll find info on where to find it and how to make a cable. Then all you'll need is a cheap laptop (486 will do) and you'll be much better off. None of these really smart guys are going to be able to answer many of your questions before you can show them some numbers.

 

What bin are you using? Personally, I'd start with the AUJP.

Did you change the injector constant to match the 30#'s?

Did you change the cylinder size to reflect the increase in displacement?

Fuel pressure steady at WOT?

Have you increased the WOT fuel? Seems like you are way down on fuel.

I'd leave the timing stock or less until you get the fueling issues taken care of.

 

I'm using winbin
730.

I dont have any clue what AUJP means.

I also cant find anyplace to change cylinder size in winbin. Do you know where it is?


[This message has been edited by MATEOZ28 (edited August 17, 2001).]

 

I plan on using Craigs software for sure. I noticed he wanted more people to try it with 730. I have a new laptop I just dont have my cable yet.

 

What bin are you using? The stock 305 bin? It has a 8 digit code ATZX1234 or something like that.

AUJP is the bin for a 92 350 fbody. You can get a copy at diy-efi.org's ftp.

Apparently winbin doesn't have the cylinder size. Tunercat does have it.

 

I'm using a stock 1991 350 BIN.

I want that tunercat, but dont have the cash right now.

 

Get the AUJP and burn it and start working with it. That bin is the latest GM has put out. Have you been able to set the injector flow rate yet? With that and the cyl volume adjusted it should run "OK". I know there is no cyl volume select in winbin so I searched through a $8D hac and found that at address $86DD it starts. There you will find a hex number of 009F. Change it to 00B0. Those are zeros not o's. This should hold you over a bit but you must get a scanner! Without valid data you are just guessing and cannot go any further!

 

Mateo, I don't know if you have found a better ecu file for winbin yet but this one seems to be better than the one that gets downloaded with winbin1.4. http://www.diy-efi.org/gmecm/ecm_info/1227730/ and get the $8d version. It has the correct calculation for inj. flow rate and in lb/hr even. It also has cyl. volume select although you'll have to do some math and it's labeled "speed density calculation". You have to devide the liter displacement of the engine by the number of cylinders and mutiply by 223.157. Or 5.7L/8=.7125 * 223.157= 159 for a 350. Get it and check it out.

 

Thank you! Very cool stuff indeed.

 

How do I open it and make it work with winbin?

 

now by calculateing the liters and placeing them in this address what would the results in real life be on the vehicle? Oh by the way when i calculated the speed density i discovered the $8d ecu is incorrect, no big deal. I found that promedit is a much better at reading the bin files and you can get a better feel of your changes rather than depending on winbins flaky programming. Another note is I discovered for some reason on most bins the address is 6DE not 6DD.