you seem not to have the available knowledge to answer. hopefully someone will.

 

What? PGM-FI.org is all about free/100% DIY tuning. All of your questions have already been answered there.

But if you want to make a repository of that information in this thread, I'm sure it would be useful to people.

 

You must be new.

 

Whether you tune with Hondata, Neptune or Crome. It's all the same process. Your questions are very basic questions. People pay to take tuning classes, so don't expect anyone to spoon feed you. I highly recommend you take the EFI 101 course like Chris recommended if you really want to tune.

 

Yeah agreed with mouab18c1, just try and error, try to adjust vtec, rev limiter, speed cut, also fuel adjust to 1% increase or decrease that look what happen to your engine, lean your spark plug white, rich your it will be black and black smoke go out your exhaust.

Try to google up how to use, read wideband 02, which point is too lean, lean, rich, to rech and max power is. The key is try first, then if any problem after trying then ask in forum, i'm sure if you asked tune crome from beginning there a lot of page and forum write about this

http://www.moates.net/zips/crome/Tun...ME%20v1.03.pdf
http://www.xenocron.com/install/CromeGuide.htm

also pgmfi.org

 

PGmfi was started in the early 90s. it had lots of useful mods. unfortunately hondatas code was leaked and downloaded from pgmfi. PGMFi couldnt afford to pay for licensing to each download, so ownership was handed to Hondata.

 

Everyone says what i have a are basic questions. and i have yet to hear any inkling of an answer.

I understand the precision of a wideband is necessary.


Can anyone confirm this?

 

Everywhere i see basemaps, i see that they are general calculations based on injetor size, map type, and a good many other perameters. are there a list of formulas that are needed to figure this out? i understand these are generall maps, just to get you to the tuner.

 

can you explain, to the best of your understanding, about Pgmfi.org?

 

The actual PGM-FI system or the website?

The PGM-FI system in Honda vehicles is basically the same. However, it does have variants from chassis to chassis. Basically it is the brain of the car.



If you buy/download the Honda shop manual for the vehicle you are working on it will have a description of the PGM-FI system for that car. The description breaks it down into what the sensors do and how the ECU reacts to them. These descriptions do not go as far as showing you the algorithms though.

 

the website, sorry. should have put the .org on there.

 

Hondata has rights to pgmfi.org, it has since been basically abandoned since the lawsuit was "settled". I lurk every once in a while, but you won't ever see new development there again.

 

Don't be a jerk, d112. And FWIW I don't claim to be an expert on these cars, and I'm new to tuning, but I've been working on and slowly learning about Hondas for 12 years.

I didn't know about the history of PGMFI, but from my experience it's still a great place to get answers to the types of questions OP is asking.

 

I, as well as other shops i deal with, avoid the forum because of its standing and history.

i can handle the wiring and mechanical. but i want to do more, i ordered a cam to replace the oem. i have milled b7 pistons. z6 block and head. knife edged crank, pistons are milled for 510 lift.

i want the ability to make it run to its potential. Crome is the most available. so i choose focusing on this specific software. i am completely new to tuning.

I am a How and why person. ill be hosting some images shortly with specific questions.

 

What does it matter where you get your answers as long as you get them?

 

Your not going to swap me over to pgmfi, sorry.

 

It's not my loss.

But why should people answer your questions when they've been answered here, there and elsewhere for a decade, and you won't search the most complete archive of Honda tuning information because they had legal troubles five years ago?

 

You would of had your answers by now if you weren't so stubborn. LOL pgmfi has more info than H-T will ever.

 

No thankyou.

when adjusting for a bigger cam, how much is acceptable to ad or remove at one time? 1% up or down is what i have read. is this acceptable.

 

It just depends on your motor.

 

what would the variation be for a1.5, 1.6, 1.8, 2.0, 2.2, 2.4, 3.0, 3.2, 3.5?

 

Like I said, it varies. Once you do some reading you will understand. Every setup is different.

 

?

 

Get yourself a wideband, start up your car and adjust values up or down until you afr is where you want it to be. That's the basics of tuning. There's other websites besides pgmfi that you can read for tons of info, you just gotta search. No ones gonna spoon feed you.

 

ignored.

what is acceptable increments to increase fuel for my z6 going from a stock lift to a 480 lift cam until i get to 14.7 afr