Is this tune safe? (log)

[99gst_racer]

Well, I turned up the boost a little bit. And I added a little bit of fuel across the board. I cant seem to get my high RPM range any richer. Here's the big question: Is this safe the way it is, or am I way too lean? And why the lumpy timing curve?

I'm going to keep trying at it. I keep adding fuel to the WOT area, but it doesnt seem to make a difference. (i'm tuning w/ a logger and MAFT).



Time,RPM,Timing,O2 1 Bank 1

00:00.72, 3260.0, 9.0, 1.0
00:01.43, 3416.0, 7.0, 1.0
00:02.15, 3664.0, 9.0, 0.96
00:02.86, 3940.0, 10.0, 0.92
00:03.56, 4252.0, 13.0, 0.92
00:04.28, 4532.0, 11.0, 0.94
00:05.00, 4800.0, 11.0, 0.96
00:05.72, 5076.0, 13.0, 0.96
00:06.42, 5348.0, 13.0, 0.96
00:07.13, 5620.0, 15.0, 0.96
00:07.84, 5932.0, 17.0, 0.96
00:08.56, 6152.0, 16.0, 0.96
00:09.28, 6400.0, 14.0, 0.96
00:09.98, 6632.0, 15.0, 0.96
00:10.71, 6856.0, 16.0, 0.94
00:11.43, 7056.0, 16.0, 0.94

 

[DSMTalonAWD51]

why cant you richen it up anymore? obviously you are knocking, if adding fuel doesnt help then

a maybe you are running too much boost
b maybe after too many runs your IC is heat soaked.

make sure yoiur boost is down and your ic isnt too hot and try again

 

[Burnett03]

Well, I turned up the boost a little bit. And I added a little bit of fuel across the board. I cant seem to get my high RPM range any richer. Here's the big question: Is this safe the way it is, or am I way too lean? And why the lumpy timing curve?

I'm going to keep trying at it. I keep adding fuel to the WOT area, but it doesnt seem to make a difference. (i'm tuning w/ a logger and MAFT).



Time,RPM,Timing,O2 1 Bank 1

00:00.72, 3260.0, 9.0, 1.0
00:01.43, 3416.0, 7.0, 1.0
00:02.15, 3664.0, 9.0, 0.96
00:02.86, 3940.0, 10.0, 0.92
00:03.56, 4252.0, 13.0, 0.92
00:04.28, 4532.0, 11.0, 0.94
00:05.00, 4800.0, 11.0, 0.96
00:05.72, 5076.0, 13.0, 0.96
00:06.42, 5348.0, 13.0, 0.96
00:07.13, 5620.0, 15.0, 0.96
00:07.84, 5932.0, 17.0, 0.96
00:08.56, 6152.0, 16.0, 0.96
00:09.28, 6400.0, 14.0, 0.96
00:09.98, 6632.0, 15.0, 0.96
00:10.71, 6856.0, 16.0, 0.94
00:11.43, 7056.0, 16.0, 0.94

is the maft adjustable in only 5% increments? That makes it tought to tune out knock, and you are knocking. Turn the boost down

 

[99gst_racer]

why cant you richen it up anymore? obviously you are knocking, if adding fuel doesnt help then

a maybe you are running too much boost

I'm only running 17psi, which I hardly consider too much.

b maybe after too many runs your IC is heat soaked.

I have a 24x12x3.5 FMIC. I definitely dont have heat soak problems.

is the maft adjustable in only 5% increments? That makes it tought to tune out knock, and you are knocking. Turn the boost down

The initial adjustments are done in 5% increments. Then you switch it into RPM mode and you can make adjustments in 2% increments. I cant monitor knock like you 1G's can. I have that Keydriver knock sum gauge, but I don't know if it's accurate. No matter what, it pretty much just sits in the 5-7 count range. I don't want to turn boost down. I am only at 17 psi, and my goal is to have a good tune at 22+. I am going to completely reset my Translator settings and restart from scratch.

 

[DSMTalonAWD51]

hate to burst your bubble but even a front mount can become heat soaked after a few runs. Another note, its a lot easier and safer to tune at 12 psi then raise your boost after your car is running well.

 

[Staytuned]

Paul Paul Paul get a wideband. You are going to be tuning with your eyes closed if you don't. I think .96 volts is too rich. I have a very similar timing curve and I am running 22 psi myself with a 11.5:1 AF ratio pretty much across the board. I would be looking for .90 or .92 for a narrow band voltage, but even that can be a difference of 11.0:1 and 12:1. I am seeing now how hard it is to tune without timing control, AFC wants to advance the timing too quick.

Here is sample log from yesterday at 22 psi and trying to keep a 11.5:1 AF ratio.

Time, RPM, Timing, Wide band voltage
00:07.13, 3096.0, 34.0, 1.28
00:07.48, 3124.0, 28.0, 1.28
00:07.84, 3164.0, 28.0, 1.28
00:08.18, 3200.0, 29.0, 1.28
00:08.56, 3220.0, 29.0, 1.28
00:08.90, 3268.0, 29.0, 1.28
00:09.27, 3324.0, 28.0, 1.28
00:09.61, 3388.0, 27.0, 1.28
00:09.97, 3448.0, 26.0, 1.28
00:10.32, 3536.0, 23.0, 1.28
00:10.71, 3620.0, 22.0, 1.28
00:11.06, 3708.0, 20.0, 1.28
00:11.40, 3828.0, 15.0, 1.28
00:11.76, 3972.0, 11.0, 1.28
00:12.10, 4112.0, 11.0, 0.82
00:12.47, 4276.0, 11.0, 0.96
00:12.84, 4412.0, 11.0, 0.8
00:13.18, 4576.0, 10.0, 0.84
00:13.56, 4728.0, 10.0, 0.7
00:13.90, 4864.0, 10.0, 0.98
00:14.27, 4992.0, 11.0, 0.9
00:14.61, 5160.0, 11.0, 0.86
00:14.97, 5280.0, 11.0, 0.86
00:15.34, 5436.0, 13.0, 0.9
00:15.71, 5572.0, 14.0, 0.88
00:16.05, 5704.0, 15.0, 0.8
00:16.42, 5832.0, 16.0, 0.8
00:16.78, 5972.0, 16.0, 0.88
00:17.13, 6104.0, 16.0, 0.78
00:17.48, 6220.0, 16.0, 0.74
00:17.84, 6336.0, 16.0, 0.78
00:18.19, 6472.0, 15.0, 0.72
00:18.56, 6584.0, 16.0, 0.68
00:18.92, 6676.0, 16.0, 0.68
00:19.27, 6796.0, 16.0, 0.66
00:19.62, 6880.0, 16.0, 0.84
00:19.97, 6992.0, 17.0, 0.78
00:20.34, 7068.0, 18.0, 0.7
00:20.70, 7176.0, 18.0, 0.78
00:21.05, 7256.0, 19.0, 0.78
00:21.42, 7340.0, 19.0, 0.78
00:21.78, 7424.0, 19.0, 0.78

 

[DSMTalonAWD51]

lucky guy. I am getting 28 degrees of timing with an SAFC and 680's. My only choice is to keep the boost down until I get an eprom ecu, I cant tune out knock with that much timing over 17psi.

 

[99gst_racer]

hate to burst your bubble but even a front mount can become heat soaked after a few runs.

Dont worry; my bubble's not bursted. My FMIC is much larger and has more surface area than I will ever need. The climate here is relatively cool also. Intercooler heat soak is not a problem that I have.

Another note, its a lot easier and safer to tune at 12 psi then raise your boost after your car is running well.

Yes, that is what I am doing. I had a good tune at 13 PSI already. I am working my way into the 20's.....

Paul Paul Paul get a wideband. You are going to be tuning with your eyes closed if you don't. I think .96 volts is too rich. I have a very similar timing curve and I am running 22 psi myself with a 11.5:1 AF ratio pretty much across the board. I would be looking for .90 or .92 for a narrow band voltage, but even that can be a difference of 11.0:1 and 12:1. I am seeing now how hard it is to tune without timing control, AFC wants to advance the timing too quick.

The company that I work for is in the process of adding Innovate Motorsports as a new vendor. Our first stock order should be here within the next 2 weeks. That is why I haven't installed on yet. I would have allready bought the AEM that I have in stock, but the price difference between the two is huge. Your timing curve looks great.

 

[Staytuned]

lucky guy. I am getting 28 degrees of timing with an SAFC and 680's. My only choice is to keep the boost down until I get an eprom ecu, I cant tune out knock with that much timing over 17psi.

Once you get over 2000hz of airflow you will see a change in your timing advance, it will be more like mine. You need to get the ECU to go into the next fuel map. I had crazy timing when I started out tuning at 14 psi, so I said screw it and turned the boost up to 20 and that gave the less aggressive timing and I was able to fine tune my air fuel ratio from there. I have even toyed with 24 psi for a pull or two. But I will save that for the dyno next month.

 

[DSMTalonAWD51]

Once you get over 2000hz of airflow you will see a change in your timing advance, it will be more like mine. You need to get the ECU to go into the next fuel map. I had crazy timing when I started out tuning at 14 psi, so I said screw it and turned the boost up to 20 and that gave the less aggressive timing and I was able to fine tune my air fuel ratio from there. I have even toyed with 24 psi for a pull or two. But I will save that for the dyno next month.

Well that gives me some hope. I was getting frustrated with so much timing but i'll give that a try.