Nistune Forums

Hi everyone,

I have recently upped my TP_Min from 4's (No idea why my original tuner had this so low) to 7's and my car is driving so much better now.

One thing that is really noticeable is these lean durations just after shifting up:


Log (end is cropped, 5mb limit): ECU File (before the TP_Min adjustment):
download/file.php?id=2801

DLP Files:
download/file.php?id=2803

Background:
RB25 with R32 ECU (Feature Pack installed, but still an old tune with unchanged TIM)
750cc injectors
Z32 MAF

Not sure what to try next?
Up TP_Min some more?
Modify Injector latency? (what direction?)
Modify TIM? (what direction?)

Real nervous about changing things that alter the boost region, on account that I'm a n00b with this stuff (but willing to try).

Any help would be appreciated. Especially if there's anything else not right in the log

Cheers.

At 25:06 I downshift to 3rd and stomp the throttle, it's in the middle of one of those lean peaks and it doesn't really react.

I'm thinking I might need to alter throttle enrich?

I run a Q45 TB if that's relevant.

Can you do a screenshot with injection time also in it? Thats the important one

TP=4 may be a result of automatic injector resize adjustment

anybody have an idea of what I should look at? Or do I take it to a tuner?

Are you flat changing the gears in this snapshot?

Nope

I did have a dodgy O2 sensor. I only just got around to changing it yesterday. It's a little better but still have the lean spot (yes I know it's still warming up in at this temp).

Blue circles are Accel off, Clutch in. my TPS idle is 620 (Q45)

Does the log show this consistently ?

Log at least 3 instances of each scenario
for example
1. under light load and changing gear at same rpm. (x3)
2. under moderate load and changing gear at same rpm. (x3)
3. under heavy load and changing gear at same rpm. (x3)

to confirm.

Would like to see MAF/TP in that log window also to see how its working with the TP min/max tables

I was logging on the way to work but my computer logged out the user and closed Nistune for some reason.

I will try again on the way home. I do less highway driving, so there's plenty of gear changes and hills to increase the load.

I'm wondering if it's a lack of throttle enrichment or if I'm gulping some unmetered air when I crack the throttle.

Ok so I did a log, but I didn't really get to do high load because it's dangerous in peak hour traffic.
DLPIO8 (It's a mess but AFR and boost kinda work):
download/file.php?id=2803

I'll see what I can do on the toll road (If the computer decides to stay on) tomorrow.

Any help is really appreciated.

Had a quick look,
I'm having trouble opening the log file in Nis, but what I could see in the calibration is changes made to TIM or K that don't add up.

I need to ask what fuel type the engine was tuned for?

R33 RB25DET, Z33 MAF, 750cc Injectors, T04 22psi

Running and tuned for E85. The ECU has a flex board, but Im not using it yet

I bumped TIM by 2% just to see the affect on FTL after installing a new O2.

Not sure what value this mornings log is.. there was way too much traffic

Are you using a wideband output to feed narrowband 02 voltage to ECU?