Stillen GEN3 vs. K fuel Multiplier

N0SL3N

Can you explain how we can test this out in uprev?

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| Akuma | Motordyne | Z1 | NST | CNT | Stillen | Avant Garde | RJM | Performix | Tint | LED | GTR | Nissan |

flashgordon

If you have Uprev Tuner licence you can do it by yourself.

Simply open your ROM Editor with your MAP and modify K multiplier adding 2 tick.

After that, you must log and tune AFR. If you are not able, you can request an e-tune map.


How you can "diagnose" the issue that I posted a week ago:
If you have uprev before you have mounted your GEN3, you can compare an old log with a new one.

You can observe that the max MAF was decreased! But the new air intake ingests more air!

Decreasing MAF, also decrease the BFS, that controls the scale in every maps in the ECU!!

So at High RPM no problem: Timing, VVEL and camshaft phasing are defined.
At low RPM the critic zone is about 2000 and 3000 RPM where all angles moves.
If the scale is wrong, the progressive increase in power is not linear as stock!!

If you observe, Stillen provide graphics that starts at 2900 RPM!!

Obviousilly more air = more gas = more power = less MPG!
Many users says that MPG was decreased after GEN3: BAD!

This means that the car runs lean!!

K fuel multipler adjust the new environment of the MAF mounting.

N0SL3N

I do have the tuner version so I have made minor adjustments but nothing major.

Can you tell me all of the relevant criteria I should select in cipher and if I should do any specific tests, i.e. 0-60

__________________
| Akuma | Motordyne | Z1 | NST | CNT | Stillen | Avant Garde | RJM | Performix | Tint | LED | GTR | Nissan |

flashgordon

You must log with Chiper MAF, RPM and BFS in 0-60 (Note: I have 6 gear Manual Transmission).

Before you must you compare an old log (before GEN3) with the new one, and if you note that Max values of BFS and MAF (in 6000-7500 RPM zone) are decreased (In my case BFS from 21.5 after GEN3 became 18.5!!) you can proceed

You can try to adjust K multiplier with Uprev ROM Editor. (I added only 2 click!)

After that, you must adjust AFR in compensation table.

At low RPM (2000-3000), in my engine, the power is more linear.
Last week I tried to reflash an older map, and the engine does not run well as now (at low RPM).

Of course the best test is dyno, but if you try and you notice an improvement , it's always a good thing!
To return to a previous MAP it's simple and economic!