Hi,

As the knock detection is not implemented in Microtech ECU, I would like to start a thread where ppl can check "safe" timings for there setups. We can help ppl. to get running at safe timing and find the right timing value for quick and safe setup.

Well, to start first my details as follow:

Car: 2nd gen Turbo II, Series4
Turbo: stock
Boost: 7PSI
Timing: Microtech LT8 default, the values to follow shortly.

REgards
Iwan

 

I think sharing data is a great idea, but not necessarily a guaranteed "safe" for anyone with similar setups. Too many other variables (I'm thinking mainly fuel octane) can lead to very different results. I would warn against anyone just plugging in numbers that someone else may be running successfully and expect to have a perfectly safe tune.
FWIW:
'87 TII S4
Stock Turbo
~10 psi
Microtech LT8s on base fuel and ignition maps (will post also, once i get my laptop adapter)

-John

 

Sharing timing maps is great, but you are better off going to the dyno and having your car tuned versus "trying" somebodys map and blowing your engine. Same boost/same turbo does not mean the port will be "exactly" the same. Some engines will tolerate more timing. If I tell you that a certain RX7 with a street port, T72 turbo, and 14psi runs 21 degrees flat from 4500 to 8500rpms, that does not mean your car will take that. Also, everybody is running different split.

Go with the base timing that Microtech programmed in your ECU, and tune it from that SAFELY.

 

G'day,

I agree with you all, they are of couse much more thing to care and to follow than just timing themself. The idea behind is just a value ppl. can follow which will match there setup as close as possible. Like the stock microtech map, which match many setups, but of couse not all setups out there.
Every engine is different and the settings must not be exactly the same and the timings posted here will not replace a run on a dyno or visiting a tuners shop, that should be clear to everyone who will use the values posted here.

Me for example experience very bad knock at 10PSI on stock ignition map in range between 2500 and 3500RPM. Going past this range knock is not presented any more. But this shows that not all engines are the same as TwistedRotor running 10PSI with no problems on stock map.

All who post or use values from here are doing it on there own risk! The information provided here should help ppl. for there orientation in tuning their engines.

So, what you think? Keep posting!

REgards
Iwan

 

Hi,

I have remaped my ECU and everything looks fine till 14PSI on 98 octane for my engine. No knock, no pinging.
You will find my ignition map as attachment to my post. Post your opinion if you going to use my map.
Please use my map on your own risk.

REgards
Iwan

 

Hi Iwan,
REf your map, you may be meaning something else, but this comes across as too retarded.
Eg:
10psi at 7000 = 13°
t-map 10psi point is subtracting 12°
Thus giving overall timing at 10psi@7000 of 1°

Correct me if i have overlooked something.

John

 

hi Jon,

nice to see you here, hope you are well !

Well, the timing you see is the final timing engine will run. On your example, the leading spark will fire at 13°. In the table are final timings the spark will fire at, the t-map is just the value ignition will be retard or advanced from the "0" value.

On the table, the "0" value at 7k is 25° - the retard timing (12deg) = 13° spark will fire at.

I would appreciate to see values from you old setup and mybe allready from your new setup?

REgards
Iwan

 

I will let you know when i get the car back...hopefully in a couple of weeks. I will have to see how the RE fairs with the S4 map. Btw, we made in the region of 370 at the hubs with 11psi.

John

 

Hi John,

due to other injector size, your map will need more attantion. Would like to see how well your going to manage your idle with your new injectors. My plans are to get same injectors for my FC as well, as I got GT40 turbo.

What turbo are you running now as I've seen your turbo on MRC forum.

REgards
Iwan

 

The S4 ran with 4x1000cc injectors, which have been transfered across. I put the T78 up for sale only because it has been rebuilt, and i am not fussed if it goes or not.

John