AFR ,FUEL RON, TRANSMISSION LIMITER

[edifice]

Hi

Volvo S60T5 , 2.4 version .Automatic transmission is Aisin AW55-51 SN. 5 speed.

Plan to do ecu tune for increase performance. In the ecu tuning package , the tuner will adjust and reset the transmission limiter on 1st and 2nd gearshift. For 1st gear and 2nd gear will set boost at 1 bar boost. 3rd, 4th and 5th gear boost is set at 1.4 bar

what are your comments? Will this effects the transmission reliability and damage the transmission?

AFR

My car use Ultragauge multi info display.

Ultragauge tap inputs from ECU. Im concern about AFR, but the ECU and Ultragauge don't have wide band AFR display

Ultragauge only have Lambda reading. Is Lambda reading same with AFR reading? Mostly lambda reading 1.000. When lean the Lambda reads above 1.000. When rich Lambda shows below 1.000.

I think Lambda is narrow band

Do you think Lambda reading is useful to read AFR ? Or i need to buy dedicated AFR gauge?

FUEL RON

After tuning ecu, is it compulsory to use higher Ron fuel full time?

My place only got Ron 95 and Ron 98

Most of the time i drive leisurely at speed 80 km/h to 100km/h. Boost is negative/off boost.For leisurely, relaxing drive, is it okay to use Ron 95 ?

I only use Ron 98 when driving out station because got clear and wide highways. Usually on highways i drive 120kmh to 160kmh. 

Thanks
Thanks 

[oragex]

I'm not sure, but maybe the guys at http://forums.swedespeed.com/forumdispl ... 2001-2010) are more into tuning/performance, maybe ask there as well if you don't get the answer here