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by A1304
04 Feb 2026, 01:25
Forum: Performance, Tuning & Aftermarket
Topic: VS M4.4 tuning dead? Start again here?
Replies: 187
Views: 56161

Re: VS M4.4 tuning dead? Start again here?

What parameters and maps affect the speed of STFT regulation
how to increase the injection time the VE card is not very effective.
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by A1304
17 Dec 2025, 05:05
Forum: Performance, Tuning & Aftermarket
Topic: VS M4.4 tuning dead? Start again here?
Replies: 187
Views: 56161

Re: VS M4.4 tuning dead? Start again here?

Yes, the oxygen sensor needs to be moved closer to the main O2 sensor. That's in the summer plans. The "14POINT7 SLC Free 2" has two outputs: 0-5 volts and 0-1 volts. I wanted to connect the 0-1 volt output to the main O2 input and screw in the LSU-4.9 oxygen sensor instead. It didn't work...
by A1304
07 Dec 2025, 22:14
Forum: Performance, Tuning & Aftermarket
Topic: VS M4.4 tuning dead? Start again here?
Replies: 187
Views: 56161

Re: VS M4.4 tuning dead? Start again here?

I don't use VAST's WBO2 modulation. The "14POINT7 SLC Free 2" manual doesn't have any calibration information, but there is a screen with AFR readings. I compared the readings in TUNER Pro. My catalytic converter is removed, and the O2 sensor is in place of the rear O2 sensor. It's further...
by A1304
04 Dec 2025, 22:37
Forum: Performance, Tuning & Aftermarket
Topic: VS M4.4 tuning dead? Start again here?
Replies: 187
Views: 56161

Re: VS M4.4 tuning dead? Start again here?

I added fuel in these places, it didn’t help, I’m trying to change the lambda regulation.
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by A1304
27 Nov 2025, 23:40
Forum: Performance, Tuning & Aftermarket
Topic: VS M4.4 tuning dead? Start again here?
Replies: 187
Views: 56161

Re: VS M4.4 tuning dead? Start again here?

Green Injectors 440cc, 255 l/h Fuel Pump, 14POINT7 SLC Free 2 Wideband, Pressure sensor mpx4250d, Upgraded fuel pump wiring, The 'R' manifold.
by A1304
25 Nov 2025, 04:25
Forum: Performance, Tuning & Aftermarket
Topic: VS M4.4 tuning dead? Start again here?
Replies: 187
Views: 56161

Re: VS M4.4 tuning dead? Start again here?

Hello everyone
After installing the broadband controller, I noticed that at 1700 and 2300 rpm, the mixture becomes poor up to 15-16 afr, sometimes a detonation is registered after that. If anyone has encountered such a problem, can you tell me how to solve it?
AFR
AFR
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