need some help with timing
Thread Starter
Joined: Nov 2002
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From: MN
need some help with timing
i dont quiet understand timing and how it relates to boost. i read mases post and he says that timing needs to be retarded in boost, but i hear other people talk about advancing timing by 26 degrees in boost. i also hear people talk about static timing. can someone explain it? i searchd and i found some info just not all i was looking for, i am running a d16z6 and uberdata
thanks
thanks
Honda-Tech Member
Joined: Jun 2002
Posts: 11,440
Likes: 2
From: Richmond, Va, usa
Re: need some help with timing (Btothe3rdDegree)
well maybe you think that you need to advance 26 degrees because your timing increases as rpms increase. Like at full boost near redline your timing might be around 16-21 degrees or something close to that.
Joined: Aug 2002
Posts: 5,724
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From: Hillburn, NY, USA
Re: need some help with timing (Btothe3rdDegree)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Btothe3rdDegree »</TD></TR><TR><TD CLASS="quote">i dont quiet understand timing and how it relates to boost. i read mases post and he says that timing needs to be retarded in boost, but i hear other people talk about advancing timing by 26 degrees in boost. i also hear people talk about static timing. can someone explain it? i searchd and i found some info just not all i was looking for, i am running a d16z6 and uberdata
thanks
</TD></TR></TABLE>
As your boost (PSI) increases (this is during the time your turbo is spooling), the combustion chamber pressures are increasing. IE: Boost + Static Compression
This is like looking at your Uberdata maps from left to right. As the numbers go right, theoretically they should be decreasing.
Higher compression requires less spark advance and also increases the engine's likeliness to detonate. The general rule is for every PSI of boost, retard the timing anywhere from .5 - 1 degree. From there get it on the dyno and the tuner will dial this in even further and find where the engine repsonds the best to either advance or retard. Basically you want to get the most advance without any detonation to acheive max power.
This isnt necessarily they way a tuner would tune a daily driven low boost car however. They would want to acheive a good balance of timing advance and still leave a decent margin of error so that there isnt much chance of the engine detonating and shortening the life of the motor while still allowing you to use pump gas.
If you are really interested in learning I would recommend checking out if there is an EFI101 class coming soon to your area. Ben Strader does a really good job explaing all of this.
thanks
</TD></TR></TABLE>As your boost (PSI) increases (this is during the time your turbo is spooling), the combustion chamber pressures are increasing. IE: Boost + Static Compression
This is like looking at your Uberdata maps from left to right. As the numbers go right, theoretically they should be decreasing.
Higher compression requires less spark advance and also increases the engine's likeliness to detonate. The general rule is for every PSI of boost, retard the timing anywhere from .5 - 1 degree. From there get it on the dyno and the tuner will dial this in even further and find where the engine repsonds the best to either advance or retard. Basically you want to get the most advance without any detonation to acheive max power.
This isnt necessarily they way a tuner would tune a daily driven low boost car however. They would want to acheive a good balance of timing advance and still leave a decent margin of error so that there isnt much chance of the engine detonating and shortening the life of the motor while still allowing you to use pump gas.
If you are really interested in learning I would recommend checking out if there is an EFI101 class coming soon to your area. Ben Strader does a really good job explaing all of this.
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