Dyno chart and a log...advice, ideas?

[matt97gst]

Here's the log...running around 18-20 psi. Mods in profile. Car is an auto.

RPM Timing 02
4876.0 9.0 0.9
5120.0 11.0 0.92
5348.0 13.0 0.92
5572.0 14.0 0.92
5824.0 14.0 0.92
6000.0 17.0 0.92
6152.0 18.0 0.9
6304.0 17.0 0.92
6452.0 16.0 0.92
6584.0 16.0 0.92

The undulations on the dyno chart aren't normal. I'm thinking a boost leak, I don't know. What does everyone think? Also I was running a lower psi on the dyno. 16-17ish.

 

[CanadianTSi]

Looks a bit Lean, I would try adding some more fuel from 5500 up.

 

[MattnGsx]

Why does it stager like that?
I think your knocking after 4400 rpms. Im just guessing here, though I have virtualy the same set up, and hit 265whp.

Could be because your an auto though?

 

[OB1]

I would richen it up from 3K on and run 20psi. Shoot for 11:1 if you can and 20psi.

 

[matt97gst]

Here are my AFC II high settings:

1000 = -39 1600= -38 2200= -33 2800= -33 3400= -30 4000= -35 4600= -33 5200= -33 5800= -36 6400= -37 7000= -38 7600= -37

So add a little more fuel from 5800 and up? I'll give it a try. I previously leaned it out some since the dyno tune b/c it made the timing and everything look better. But I'll try it.

 

[CanadianTSi]

I would try -33 from 2200 on up.

 

[Jaraxle]

No boost leak. You would be PIG rich (9:1 or so) if you had a boost leak.


-Jaraxle

 

[matt97gst]

I would try -33 from 2200 on up.

I tried doing that, and it was too rich I think...wasn't running good and was slower.

I added a little more fuel though up top and did a new log. Now, is this a log good or is there something wrong w/ it? It looks good to me, but I'm a newbie somewhat with tuning still. On a side note, my TPS is at 98.23 at full throttle, that normal?

RPM TIMING 02
4428.0 8.0 0.94
4744.0 10.0 0.94
5024.0 10.0 0.96
5392.0 12.0 0.96
5636.0 13.0 0.94
5924.0 15.0 0.94
6160.0 15.0 0.94
6388.0 17.0 0.94
6632.0 17.0 0.94
6820.0 20.0 0.94

 

[CanadianTSi]

That looks almost perfect

My TPS only goes to 98.something also...not really worried about that 1%....

 

[definitiveno]

Yoiu guys need to readjust your throttle cable, shouldn't take more than 5 minutes

 

[matt97gst]

Yoiu guys need to readjust your throttle cable, shouldn't take more than 5 minutes

"It does not have to read 100% at all. Just need to make sure when you push the throttle to the floor the throttle plate is open fully. The ECU only uses the TPS to detect a change in throttle position, not an absolute throttle position (except in the case of going into open loop, which isn't near 100%). So not going to 100% is fine and very common." - turbo2ltr (mike - mr. pocketlogger)

 

[2gGSX]

I tried doing that, and it was too rich I think...wasn't running good and was slower.

I added a little more fuel though up top and did a new log. Now, is this a log good or is there something wrong w/ it? It looks good to me, but I'm a newbie somewhat with tuning still. On a side note, my TPS is at 98.23 at full throttle, that normal?

RPM TIMING 02
4428.0 8.0 0.94
4744.0 10.0 0.94
5024.0 10.0 0.96
5392.0 12.0 0.96
5636.0 13.0 0.94
5924.0 15.0 0.94
6160.0 15.0 0.94
6388.0 17.0 0.94
6632.0 17.0 0.94
6820.0 20.0 0.94

Nice log

 

[matt97gst]

Nice log

Thanks

 

[mitsuman_626]

lean out your engine until you start to see knock then richen it up until it goes away.

probably about .85

 

[matt97gst]

lean out your engine until you start to see knock then richen it up until it goes away.

probably about .85[/QUOTE

WTF
I'll leave it where it is.