Air Fuel Ratio 13.71:1 consider Lean on NA Engine?

Bila nak tt wei...

ahpaul82@
i didn't know you're into fc ratio nowadays...jk
af ratio is very much depend on driving style and preference / level of mods.
not sure about cps but 13.71:1 looks fine for na engine.
high revving driver may need somewhere in the range of 13.2.
anything higher than 14.9 maybe lean (pinging). correct me if am wrong.
btw, mine was set around 11.3 on tuning but shoot up to 11.9 fully loaded.
was a lousy turbo engine, anyway.

akhirnya, morning again

Mornin too..

learning mah.. still noob.

reference value set at 13:1,
lean all the way up after 4000RPM to 6800RPM, (<13.74:1)
highest value is 13.74:1 @ 6200RPM.

i convincing myself no need any ECU...

nah! 13 range on na are for experts like you . noob go for 14 range.
i have tried 12.5 -13.3 on friend's na car and it feels lively with instant throttle respond but he is complaining about the higher fc.

Morning....

Without ecu or management can tune a/f ratio?

morning.. bro jjj, baru tukar tayar, nak pasang management pulak ke?

Hehe takde lah bang...saja tanya2

if reference set as 14 then is rich lor, no need worry so much..

your friend's car is it with aftermarket ECU?

aftermarket ECU is expensive, i'm not afford..

hmm... Turbo car seems need to tune more richer in order to protect engine..

your car must be in perfect tuned condition~

Nope,
stock ECU can't do anything on A/F setting.

morning...kihkihkih.....

Molingg

alopp..sudah lunch aaa?

Feel good when driving my car after service car and change a new donut.

sudah gakk..keke

friend's ride was on na campro with standalone haltech sprint 500. he is very secretive about the heavily diy modded internal. dyno result is 148whp.
depend. 14 could be lean'. running lean on turbo increased the burning temp. 11 - to 12 range is rich.
my ride was now detuned to lousy 0.6bar. no longer running on 3 fuel pump. and kinda hard to find a good tuner for microtech. i have to learn the trade.

TripleJ104@
you bought the d5?

Wahhh na campro 148whp, very power for na. Having that kinda power 1.8cc & some 2.0cc car sure having trouble.

Mr yngwie im in a budget this time so i settle down with neuton NT8000. Overall its good tire & the performance is just behind compare to my old GSD3. The winning point this tire is i can feel the ease moving my car from stand still,steering is light but when hi speed it become more lighter (less confident when speeding), cornering is good & plenty grip, silent than gsd3 but not with other silent tire, comfort & cheap

Hi taiko2

I just bougnt 2nd hand Waja CPS.
Engine so far OK. Wanna ask

1. Buzzing sound from dash board after rpm reach 2.5k-3k (How to solve it)
2. AT cars having problem on "check engine" light
3. Door got sound krek2 something like power window when cruse 100-140
4. At panel meter Watch and seatbelt no light

How to solve the issue . TQVM and cost