My new GA16DET - Page 3

**wes** · Jun 25th, 2008, 09:26 AM

Does your system know what base timing is in comparison to the total advance? Say the base is 10 degrees is it advancing it on top of the base timing? Regardless you are running too much timing. Under full throttle conditions in full boost my car is running roughly 20-25 degrees of total advance.

dburone · Jun 25th, 2008, 12:37 PM

Quote:

Originally Posted by wes

Does your system know what base timing is in comparison to the total advance? Say the base is 10 degrees is it advancing it on top of the base timing? Regardless you are running too much timing. Under full throttle conditions in full boost my car is running roughly 20-25 degrees of total advance.

Timming is exactly what you see on the table, the table shows total timing.
My actual full boost is in the 180KPA sector of the table, I actually lowered that line making a maximum of 12degree and its running better.
I remember some post you made saying that youre timming at full boost was 12degrees, am I wrong?

thanks for youre Help WES, I really apreciate it!

**wes** · Jun 25th, 2008, 09:45 PM

Quote:

Originally Posted by dburone

Timming is exactly what you see on the table, the table shows total timing.
My actual full boost is in the 180KPA sector of the table, I actually lowered that line making a maximum of 12degree and its running better.
I remember some post you made saying that youre timming at full boost was 12degrees, am I wrong?

thanks for youre Help WES, I really apreciate it!

My car runs around 19-23 degrees of total timing under boost. Many people have ran in the mid 20's in terms of timing. The more timing the better as long as it does not detonate. I would bump it up from 12 slowly and see how it responds.

dburone · Jun 26th, 2008, 01:32 AM

Quote:

Originally Posted by wes

My car runs around 19-23 degrees of total timing under boost. Many people have ran in the mid 20's in terms of timing. The more timing the better as long as it does not detonate. I would bump it up from 12 slowly and see how it responds.

I dont understand, in this post:
http://www.nissanforums.com/ga16de-1...on-timing.html

You said:

Quote:

Originally Posted by wes

I hit around 12-14 degrees of timing on the top end under boost. EGT's in the 1400's and at the end of 4th around 1500. Probe in the center of the collecter pre turbine.

**wes** · Jun 26th, 2008, 10:30 PM

Quote:

Originally Posted by dburone

I dont understand, in this post:
http://www.nissanforums.com/ga16de-1...on-timing.html

You said:

That is advance with base timing of 10 degrees. Because the ECU assumes base timing that means total timing of 20+ degrees. Again I would run no less than 93 octane (which I assume you are doing) and slowly increase timing.

dburone · Jun 26th, 2008, 11:19 PM

Quote:

Originally Posted by wes

That is advance with base timing of 10 degrees. Because the ECU assumes base timing that means total timing of 20+ degrees. Again I would run no less than 93 octane (which I assume you are doing) and slowly increase timing.

Im going to look for some info on the Megasquirt ECU, maybe it also sums the base timing.
Timing in the region where knock was heard was at 14, now at 12 I have no knock.

Im running 98 octane fuel and ill try mixing some toluene one of these days...

dburone · Jul 26th, 2008, 04:41 AM

Finally the car is running perfect. No timing trouble or fuel, everything looks good and the engine pulls hard and clean to over 7500rpm.
The only problem im having is that with the engine cold, 60-70 degrees celcius I get 14psi on the intake manifold. When the engine gets hot 80 degrees I cant get over 8psi, If i let the engine cool down again I get 12 to 14 psi.
What do you think can cause this change in the pressure?

bigluelok · Oct 13th, 2008, 12:36 AM

damn man your car is pure sex