Ignition maps - show us yours

[TurboRA28]

Here is my 3S-GTE IGN Map by a very reputable tuner.. Kept the engine happy for many track days.

[TurboRA28]

I have 3T-GTE ignition maps by a very good tuner, but was running large boost and custom plenum.. Can post up if interested?

[toyo-al]

Very interested Joel! I'm sure at the least it'll give us something to work off and go from there right?

I'll be running standard boost till after the new engine is run in. How much boost was the 3T running?

Thanks mate!

[gixer]

When we set timing at differing load points on our dyno, we use MTBT(minimum timing for best torque), exhaust gas temp and knock sensor. If you have ever used a mainline dyno, you will know of it's ability to interface with aftermarket ecu's and graph the torque dependant of what timing you ask for. Eg, you set the rollers to a particular rpm point, set you load/tps and then enter timing numbers, it makes a graph of the torque vs timing advance.

Johnny, did a ST the other night, that particular engine liked around 33deg total timing.

[MWP]

Yeah thats the correct way to do it.
What workshop was that done at?

[mikie]

here is mine, Gen3 3SGE


Cheers Mike

[stradlater]

Hrm, any 1uz maps?

[TurboRA28]

Here is one I found.. Was thinking this may be a good starting point for my 1MZ..

[Jonny Rochester]

by 'race shop' I presume you mean tuned by a idiot with the IQ of a rock?

The 'race shop' map is far better than the first one. The 'race shop' map makes logical sence and would run most engines very well. The first map is all over the place and would not make as much power or responce. The race shop would have also spent more time on the fuel map, which is more important, and only if they had time would they go back and adjust the ignition map further.

[thechuckster]

i beg to differ - a constant and flat timing map from under 3k rpm upwards is not going to take any advantage of the 4AGE's changing VE as revs rise and MAP changes. It would also be a hinderance to acceleration tuning and thus performance.

It's reeks of lazy and join-the-dots tuning that people continue to pay stupid amounts of cash for.

[oldeskewltoy]

the race shop tune is a fair place to begin from.... not end @.

[gixer]

They both look really bad to me.

[Jonny Rochester]

If you don't have a lot of tuning experience, I can see where your coming from. If a map is filled out with lots of different numbers down to a few decimal places, it looks "tuned". However this is often guess work. Even if a car is tuned on the dyno, there are a lot of things to look at, and fine tuning ignition is only 1 thing to do after more important things. And a basic ignition map works very well.

Consider the old dizzy. There is mechanical advance, and vacuum advance. Often for "performance" engines in the 80s (often with a "mild cam"), you would get the dizzy regraphed to suit if you had the money. After all was said and done, you would end up limiting the mechanical advance, using softer springs so it comes on early. So you may reach full mechanical advance by 3000rpm. The resulting map would end up looking more like the "race shop" map posted earlier.

We now have the luxury of filling in a electronic map, but you need to know what your doing or its meaningless.

I am still learning fast and am influenced by some of the maps posted here.

[Jonny Rochester]

This is my current map on my engine. It is working very well, but still tweeking it. 98 fuel. Load is TPS. No other compensations.

[gixer]

If you don't have a lot of tuning experience, I can see where your coming from. If a map is filled out with lots of different numbers down to a few decimal places, it looks "tuned". However this is often guess work.

That depends who tunes it, at work our chassis and engine dyno's have quite good data aquisition, we tune MTBT/exhaust gas temps/knock and end up with sweet mapping....but it takes time! The software on our dyno's interfaces with most aftermarket ecu's and when we are inputting timing numbers on the ecu it graphs the torque at that particular load point, makes it much easier to find the optimal timing point.