sstevojr

iTrader: (7)

...mild knock on medium aggressive acceleration.
OK so I'm taking some logs of this new tune, and I'm having 3 problems:
1)Some pretty bad up-shift spike
2)Consistent knock when getting on throttle from a dead stop, medium aggression
3)Up-Shift Timing is WAY off of the Lower Bound Timing look-up value
For example, small sample of repeated isses:

2ByteRPM	Load	AFR	KnockSum	TimingAdv	Boost	TPS	Speed	WGDC_Active
785	29	13.90	-	13	(6.3)	18	-	-
852	44	13.90	-	16	(1.7)	24	-	-
1,129	63	13.63	4	20	(1.0)	27	-	-
1,594	63	13.05	5	23	(1.2)	28	-	-
1,957	66	12.26	4	27	(1.0)	29	-	1.0
2,063	70	12.89	3	26	(0.9)	29	-	1.0
2,016	71	13.28	2	25	(0.5)	29	-	1.0
1,949	73	13.44	1	24	(0.1)	30	2	2.0
1,918	76	13.86	-	25	0.3	30	2	3.5
1,938	78	13.90	-	24	0.7	32	2	7.0
1,996	82	13.79	-	23	1.1	32	6	7.5
2,027	84	13.59	-	22	1.3	31	6	6.5
2,055	86	13.63	-	23	1.6	31	6	5.5
2,137	87	13.86	-	22	1.7	30	6	3.0
2,242	88	13.51	-	23	1.6	30	6	2.0
2,438	88	13.28	-	24	1.4	29	11	-
2,613	86	13.28	-	26	0.8	27	11	-
2,785	84	13.71	-	27	0.7	28	11	-
2,973	82	13.59	-	29	0.6	27	11	-
3,137	83	13.55	-	29	0.6	28	15	-
3,363	85	13.71	-	-	0.7	28	15	-
3,035	92	13.16	-	(6)	2.6	29	15	-
2,438	101	13.32	-	7	5.0	31	15	5.5
2,453	107	13.90	-	18	5.1	32	19	7.5
2,613	110	13.90	-	18	5.2	32	19	7.5
2,672	114	13.59	-	17	5.4	32	19	7.5
2,801	117	13.32	-	17	5.5	32	19	6.5
2,910	114	13.28	-	19	5.9	32	19	5.5
3,059	116	13.75	-	20	6.0	32	22	5.0
3,199	115	13.59	-	22	5.9	32	22	5.0
3,328	114	13.01	-	22	5.6	32	22	5.0
3,445	113	13.28	-	23	5.5	32	22	5.0
3,535	112	13.36	-	23	5.2	32	27	5.0
3,660	111	12.69	-	25	5.1	32	27	5.0
3,789	110	11.52	-	25	4.7	32	27	5.0
3,957	110	11.33	-	7	4.4	32	27	6.5
3,711	114	10.98	-	5	5.6	33	31	6.5
3,246	116	10.08	-	7	6.6	33	31	7.5
3,063	119	11.09	-	20	6.4	33	31	8.0

And here is my LBT:

		10	20	30	40	50	60	70	80	90	100	120	140	160	180	200	220	240	260	280	300	320
500		-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-14
1000		-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-12	-14	-14	-14	-14	-14	-14	-14	-14	-14
1500		-14	-14	-14	-14	-14	-14	-14	-14	-14	-14	-13	-12	-10	-13	-14	-14	-14	-14	-14	-14	-14
2000		-16	-16	-16	-16	-16	-16	-16	-16	-16	-14	-13	-12	-9	-10	-10	-10	-11	-11	-11	-12	-12
2500		-17	-17	-17	-17	-17	-17	-17	-16	-14	-12	-10	-8	-5	-6	-6	-7	-8	-8	-8	-9	-10
3000		-18	-18	-18	-18	-18	-18	-17	-15	-13	-9	-7	-6	-1	-2	-4	-4	-5	-6	-7	-8	-8
3500		-19	-19	-19	-19	-19	-18	-15	-13	-11	-7	-4	-2	1	0	-2	-3	-4	-5	-6	-7	-8
4000		-19	-19	-19	-19	-17	-16	-15	-12	-10	-5	-3	0	1	1	0	-1	-3	-4	-5	-7	-8
4500		-19	-19	-17	-16	-14	-12	-13	-10	-8	-4	-2	1	2	2	1	0	-2	-3	-4	-6	-7
5000		-18	-16	-15	-13	-12	-10	-10	-7	-4	0	1	4	5	4	3	2	0	-1	-3	-5	-6
5500		-16	-14	-13	-11	-10	-8	-6	-4	-2	1	3	5	6	5	4	3	1	0	-2	-4	-5
6000		-14	-13	-11	-10	-8	-7	-6	-4	-2	1	3	5	7	5	4	3	1	0	-2	-4	-5
6500		-12	-11	-9	-8	-6	-5	-2	0	2	5	5	7	7	6	4	3	1	0	-2	-4	-5
7000		-9	-8	-7	-5	-4	-3	1	3	6	8	7	7	7	6	4	3	1	0	-2	-4	-5
7500		-7	-6	-5	-3	-2	-1	2	4	7	9	8	8	8	7	5	4	2	1	-1	-3	-4
8000		-5	-4	-3	-1	0	1	2	5	8	10	9	9	9	8	6	5	3	2	0	-2	-3

sstevojr

iTrader: (7)

So first off lets view the up-shift occurring at 3250-3500 X 80-90
According to LBT s/b (13)*, not 0 or (6)???

This is an issue because if I can't get timing to match up with the look-up value, correcting that boost spike is going to be a b!tch. While 0.6 to 2.6 might not be much of a spike, you should have seen it at full speed when it boosts from 22-23 all the way up to 26.5

richardjh

I can help you with (1) and (3). I've done lots of work in this area.

Want to do it online, or take it offline and thrash it out via PMs, emails?

Happy either way.

Rich

sstevojr

iTrader: (7)

Oh and one more thing, has any found that dang down shift table that defaults everything to (15)*? Man seeing the corresponding spikes from those shifts, yikes!

sstevojr

iTrader: (7)

haha, Rich! You know I was thinking where to vent this and my options where:
1) RA Turbo: where Rich has his AU Logging thread
2) X Tuning: where I started talking w/ Rich
3) Send a PM to Rich

sstevojr

iTrader: (7)

Umm one question is this a MUT issue? Want to send me your email?

richardjh

Yeah, I really hated seeing 25psi during SST upshift, when I had carefully tuned for 22psi. Nowadays, I'm tracking 21.5psi until 5500rpm, and SST upshift rarely even touches 23psi.

It's not one single "fix" - it involves a number of changes, all working together. That includes two ROM patches. Be aware you'll be the first to run the patches on your ROM. But not the last, I'm sure!! Welcome to guinea-pig status.

With the boost control tweaks in question, you'll find your initial boost peak (post-spool) has less of that big overshoot thing... if any. I realise some people like the seat-of-the-pants feel of that, but I'm not a fan - it upsets my car's balance coming out of a corner. I do understand the attraction of it - this is just me showing my n/a track driving roots!

But yeah, I reckon we can tame your SST upshift boost issue. If you're happy with the direction, let's go to work.

Rich

sstevojr

iTrader: (7)

Funny you say that, because the whole reason I'm out logging is that I didn't like the jolts from the timing values jumping up and down (I wanted a smooth strong pull, with better mid range than peak values). So I used Excel to smooth out the High and Low Octane Timing Tables, which feels SOOOOO much better for daily driving, and is a whole lot nicer on my drive shaft. It's not so much of a kick in the pants, but like you mentioned, coming out of corners I don't have to worry so much the kick to the rear diff, etc.

sstevojr

iTrader: (7)

Oh and for #2
Pulled 1-2* from 1000-2000 x 60-70 and the 5's and 4's became 2's and 1's, works for me

richardjh

And PM'd you.

Rich

RazorLab

iTrader: (8)

The WOT shift boost spike is from the Lower Bound Timing table being set wayyyy too low. Unless you are really only running approx 9* at 7k, which I doubt you are.

Richard, his 2010 USDM shouldn't have the same LBTT issue you are having.

sstevojr

iTrader: (7)

Which I'm trying to work on, but if I can't get partial throttle timing to match up with the LBTT, how can I possibly fix this?

EDIT: and no, for WOT @7k its ~13*

RazorLab

iTrader: (8)

The USDM will not following the LBTT at lower loads when certain other tables are changed, I have found.

I'd have to take a look at your rom to see if this is the issue

sstevojr

iTrader: (7)

Ahaaaaa, that explains why WOT is pretty smooth (and why I'm trying to clean up partial throttle for DD) Hmmmm, have you figured out what its querying, or for that matter why downshifts default to (15)?

sstevojr

iTrader: (7)

I just sent Rich my ROM, I can forward it to you?