I am wondering if i can get pointed in the right direction as to figure out how ignition timing works and how to tune it with turbo when it comes to uberdata. I want to learn how to tune without someone elses help, perhaps with a wideband, EGT guage, oil pressure, and boost guage and some asphalt.I know dyno would be the best......but i wanna be able to get it REALLY damn close without dishing out 200 bux every time i chage some stuff....thanx in advance.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by themorphious &raquo;</TD></TR><TR><TD CLASS="quote">I want to learn how to tune without someone elses help </TD></TR></TABLE>

In that case, I'll save the effort of a detailed reply. Good luck!

 

http://www.pgmfi.org

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J. Davis &raquo;</TD></TR><TR><TD CLASS="quote">In that case, I'll save the effort of a detailed reply. Good luck! </TD></TR></TABLE>

My bad, I didnt mean it like that.....lol, now that i read that.......it's kinda funny that i said that.....I meant i wanna be able to tune it with your guys help on the topics i have questions about...and i wanna be able to tune it myself. I want you guys' help learning how though...lol

 

It's hard to nail ignition timing precisely without some sort of feedback concerning power output. You can dyno, or record engine acceleration over time, etc, to determine gains.

Generally, if the ignition timing is too retarded, as you advance the ignition timing you will keep making good gains in power. When you stop making good gains, sort of hit a plateau, you are approaching detonation. Depending on your setup, there is a rule of thumb of 4-5 degrees plateau before detonation sets in.

Now, a lot of people leave their ignition timing at the minimum best, and the 4-5 degree plateau acts as a nice safety buffer between your engine and detonation. For some applications, such as a small bore D16, it is actually a good idea to take out more timing than that because of how they heat up inside and approach detonation due to thermal limits within the engine design - with a good tunable EMS (Crome, etc) it is actually possible to manipulate ignition timing based on rises in IAT or coolant temp, which is REAL handy for maintaining best balance of power vs reliability.

And that's just the real basics of it.

 

read and learn myfriend

 

This is one of the best and honest answer I have seen on this board about timing. If people don't believe him, then your engine is not going to last. That's how I tune timing too.