I want to learn to tune !!!

[Hard Driver]

Hello to all, I want to learn to tune I have a clue but only a clue.Is there a sticky here a link you can give me that lays out the basics so I at least know what I reading....something like Tuning for Dummies ...your help will be greatly appreciated .

[dave w]

What are you wanting to tune?
TBI?
TPI?
LSx?
LT1?

dave w

[Hard Driver]

I want to tune a TBI.

[dave w]

Which TBI computer do you have?
1st generation TBI computer 1227747?
2nd generation TBI computer 16197427?

Can you data log?
Can you edit a .bin file?
Can you burn your own chips?

Three Steps to TBI Tuning:
1. Data Log
2. Edit the .bin file
3. Burn a chip.

Repeat until tuned.:thumbsup:

dave w

[Hard Driver]

This tbi is the type that comes on an 87 S10 blazer with a 2.8 engine,the engine has been replaced with a 3.4 crate engine (not a 4.3) and the tbi will be replaced by a larger but same type of tbi unit. I can check for a production # if needed.

[dave w]

That might be ECM number 1227429, which I think is definition $3F. The challenge I see, is finding documentation and files for $3F.

Let us know THE EXACT ECM part number in your 87 S10. Maybe a GM dealership can help you figure out what THE EXACT ECM part number is with a production number? I have no way of figuring out what an ECM part number is with a production number. I use the information on the ECM LABEL to figure out what the EXACT ECM part number is.:thumbsup:

dave w

[Hard Driver]

First let me say thank you for your help. I recently installed a nice dash,which are really hard to find and I think there was a sticker on the ecm. I will check it as soon as possible.

[Hard Driver]

Yes 1227429 ECM.

[steveo]

so you'll need tunerpro and this xdf file (definition): http://www.gearhead-efi.com/gearhead-efi/def/xdf/$3F.xdf

i looked the definition over and it looks complete enough to work with.

[dave w]

So maybe the data stream A035 for the LL2 (1986 2.8 liter TBI engine) is the correct .ads file?

dave w