I want just the facts, and I know the dyno is the best place to go, but I really don't have the money or the time to find one. I've got an Euro R motor which was tuned with hondata on 91 gas. Since I purchased the car, I've been running 91 + octane booster, and wanted to know what I should do to make the car run leaner to increase power. It is my understanding that "advancing the timing" will cause more HP top end, and would be safe on a higher Octane. I just wanted to make sure this is true, and also find out which way I'd move the distributor if I was looking at it from the passenger side of the car, Clock-wise or Counter-clockwise.

Thanks for all your help, and if you know of a good write up, which I've tried to find please post. I want as much FAQ's about ignition timing and experience as possible so hopefully I can do a write-up to help everyone (seemingly a lot of people; and a lot of retards who have contradictory facts).

 

This is really simple, although it's not going to be what you want to hear. You have Hondata, use your Hondata to fine tune your ignition. This should be done on a dyno. It makes no sense to mess with the distributor when you have a fully programmable computer in the car.

 

Without a dyno, your best bet is to use ignition tables from a similar engine that was tuned on a dyno. Ask hondata for some example ignition maps to work with. Make sure the base timing is set the same (this is the only time you turn the distributor), or you will not end up with the same final timing as the tuned engine with just a map transplant.

If this is not an option, there is always the shade tree mechanic way: advance it until it starts to ping then back off a bit. We tuned my mom's 80's corolla like this when the rebuilt head went on, and it ran for another 100k just fine.

As for which way to turn the distributor, turn it in the direction that gives the right number on your timing gun.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by flyrod &raquo;</TD></TR><TR><TD CLASS="quote">If this is not an option, there is always the shade tree mechanic way: advance it until it starts to ping then back off a bit.</TD></TR></TABLE>

I have heard the knock sensor will usually retard the timing before you can hear it.

 

Bump, anymore help or thoughts would be appreciated!

Thanks!