NEWBIE 93 Z71 vortec

Hi all! I'm looking for a good starter Bin for my project pickup. I started with a 97 Vortec gm Goodrich engine, used an adapter intake, healthy cam, 97 style fuel pump, and installed an adjustable fuel pressure regulator.

I had a fella build me a chip using the information and it runs ok WOT, but the drivability SUCKS!! I purchased a Moates Autocal package and have been reading and learning for months now, I figured out how to Data log, but when I tried Emulating, things went south. I took the chip that I bought and tried to download it into tunerpro RT using the ZIF socket and when I look through the tables and scalers, all of the data is EVERYWHERE!!!! the values are not smooth flowing like other bins I have downloaded and looked through. so what i'm looking for is a bin file close to what I have that I can start adjusting from.

Any help and information will be greatly appreciated as I am still learning the ropes..

Thanks Bobby

What are the injector part #'s you are using?

What fuel pressure are you using?

dave w

Usung the stock injectors. I have had the fuel pressure up to 20#s before, but it idles so rich you can’t stand it. As soon as i touch the throttle it pulls the timing to 0 and it backfires, coughs and bogs for a couple seconds until the timing goes back up and it runs pretty good... it’s just that every change in the throttle position causes the timing to do this.

Thanks

What's your definition of a healthy cam?

480/488 112 LSA.

I'm guessing that's your lift and LSA, what's your duration?

Google tells me it's a Howard's with 231 235 @ .050
Disable checksum for emulating?
Soooo with a stock cam idling at 30 kpa and your healthy cam idling at 60ish kpa, on a stock tune the pcm is going feed your idle using the 60 kpa fuel cell and this only gets more exasperated with higher than stock fuel pressures. I know you said you're running off fella tune but who knows what fella did???

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Originally Posted by Suzukiz440

Usung the stock injectors. I have had the fuel pressure up to 20#s before, but it idles so rich you can’t stand it. As soon as i touch the throttle it pulls the timing to 0 and it backfires, coughs and bogs for a couple seconds until the timing goes back up and it runs pretty good... it’s just that every change in the throttle position causes the timing to do this.

Thanks

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The chip needs to be programmed with correct injector flow.

Increasing fuel pressure will increase the injector flow. To much fuel makes the engine run rich.

Decreasing the fuel pressure will decrease the injector flow. Not enough injector flow makes the engine run lean.

Stock TBI timing tables will not work well with Vortec heads.

The chip needs timing tables that will work with Vortec heads.

dave w

The duration is 258 intake, 264 exhaust.

Try using the .bin files attached.

Standard Disclaimer: USE AT YOUR OWN RISK!

dave w

Perfect! That is what i was looking for, a good starting point that i won’t have to re invent the wheel.

One more thing, has anyone ever had their fuel pump and injectors stick ON while trying to emulate? The only time i tried emmulating i filled the engine plumb full of gas and had gas pouring over the top of the throttle body and all over the ground... i’m kind of scared to try it again.

Likely you will need to re-invent the wheel. The $E6 .bin file was adequate at best, later on the $E6 updated with a $OD .bin file.

dave w

Dave, when I upload those 2 bins, all of the values are identical, in the timing and fueling tables, ALL of the values throughout the tables are the same numbers.... I searched through some other threads on here and found someone who shared a bin for an IROC, I uploaded that bin and all the values look like they should. I don't know if i'm not downloading your bins correctly of what..... I'm back to scratching my head.

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Originally Posted by Suzukiz440

Dave, when I upload those 2 bins, all of the values are identical, in the timing and fueling tables, ALL of the values throughout the tables are the same numbers.... I searched through some other threads on here and found someone who shared a bin for an IROC, I uploaded that bin and all the values look like they should. I don't know if i'm not downloading your bins correctly of what..... I'm back to scratching my head.

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Are you using the $E6 .xdf file?

$E6 information is at this link: http://www.gearhead-efi.com/Fuel-Inj...Information-E6

dave w

Dave, now I can see all of the information!!! so the XDF file that I downloaded from the CODE59 website didn't like it?? the XDF file lets tunerpro read the information in the bins, what does the ADX file do?

another question, are the 27sf512 chips re-writable? or is it once and done?

I have been frantically reading through Jimmie's post about his 94 chevy pickup and trying to learn from his conversations. my lord there is so much information on here to soak in!

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Dave, now I can see all of the information!!! so the XDF file that I downloaded from the CODE59 website didn't like it?? the XDF file lets tunerpro read the information in the bins, what does the ADX file do?

another question, are the 27sf512 chips re-writable? or is it once and done?

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Yes, they can be flashed 1,000s of times and retain memory for 100 years according to literature I've read. I bought 5 on Ebay for $25 and have been tuning my truck with them for a while. Just be careful of Chinese "fake" chips...

http://support.moates.net/fake-27sf512-chips/

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Originally Posted by Suzukiz440

The duration is 258 intake, 264 exhaust.

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Ahhh...are those advertised...should known it was a roller grind. Fast355 would chime in saying that cam is not huge at all!!!

Quote:

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Originally Posted by Suzukiz440

Dave, now I can see all of the information!!! so the XDF file that I downloaded from the CODE59 website didn't like it?? the XDF file lets tunerpro read the information in the bins, what does the ADX file do?

another question, are the 27sf512 chips re-writable? or is it once and done?

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Post 1 you said you figured out how to datalog...adx is used with TPRTs datalogger.

Start with the stickie if you havent... http://www.gearhead-efi.com/Fuel-Inj...to-New-and-Old

The .xdf is similar to Make / Model / Year / Engine / Transmission.

The 27SF512 is re-writeable

dave w

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Originally Posted by stew86MCSS396

Ahhh...are those advertised...should known it was a roller grind. Fast355 would chime in saying that cam is not huge at all!!!

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Yep I would and certainly will now that I saw this! Looks like the Comp 08-500-8 aka XR258HR and I am guessing it is on a 112 LSA and 108 ICL. If so that is a small cam but a fairly good choice for that engine.

Thanks all for the info and thanks Dave for those BIN files. I had to bsck tbe timing tables down from 48 degrees!!!! Haha it was PING CITY during the first test. I pulled the timing back to a max of 34 degrees and WOW!!! It still goes lean when i crack the throttle for just a second, so i need to play with the fuel tables a bit. What do you think i should have my fuel pressure set at? I’m at 16 psi now, i do not have a wide band O2 sensor. I’m just going off of the millivolts from the stock O2 sensor and at first throttle crack it drops to less than 100mv then once it comes out of it’s stumble it goes to 7~800 mv. What table should i change the fueling in? The Timing was obvious, the fuel i’m not sure on...

thanks for the help!
Bobby

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I’m just going off of the millivolts from the stock O2 sensor and at first throttle crack it drops to less than 100mv then once it comes out of it’s stumble it goes to 7~800 mv. What table should i change the fueling in? The Timing was obvious, the fuel i’m not sure on...

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You can give it a quick shot of fuel in the AE-TPS PW(Acceleration Enrichment) and the AE-MAP PW for a longer shot.

http://www.gearhead-efi.com/Fuel-Inj...AAAElFTkSuQmCC

Thanks, i’ll give those a try, i fugured there was a certain table for thst, just wasn’t sure wich. There are soooooooo many terms and abbreviations to learn.

Yep, that's why IMHO this is the best forum for tuning and troubleshooting. Here's some definitions from the forum front page...

http://www.gearhead-efi.com/gm-ecm-p...ictionary.html

Fantastic! Thank you! There is so much awesome info on this page! I have been slugging this thing along for 6 months because i was intimidated by all of this tune talk.. i was ready to give up until i found this page!

Jump in, get your feet wet!!!