Yes, and CoSE tell me to do all my service there otherwise they couldn't help when there's engine issue.

Got my car back from CoSE. They bleed the brake to fix the krok sound.

Yes, problem solved.

No idea how air went into the system. I'm not sure whether they replaced the fluid or reuse.

Anyone technical with engine parameters specifically fuel trim? What is the STFT and LTFT that is considered as normal?

I think I can use this to tune my NGV's ECU. It is currently >10% under load.

Got the road name of EA? I want to go there and put some strut bar.

I have unusual fuel trims as reported by ECU, it's giving me headache.

Petrol operation:
STFT Bank 1: -50%
LTFT Bank 1: 0%
Observation: STFT will return to 0% when throttle is lifted. STFT returns to normal values of 0% to 2% at specific RPM ~1.5k. STFT is -50% at 99% of the time. Injector/vacuum leak?

Gas operation:
STFT Bank 1: 7% to 30%
LTFT Bank 1: 0.8%
Observation: Maybe caused by improper tuning (?)

Am I having a vacuum or injector leak? My concern is the petrol mode STFT.

This post has been edited by mengsuan: May 21 2012, 10:14 AM

They didn't mess with any sensor or original ECU. AFR is still unaffected at 14.71:1. But fuel trim is gone.

I don't remember well whether was it like this already before the NGV conversion, I have a feeling the STFT is behaving like that all the while. Do you know what's the correct procedure to troubleshoot? I heard some said smoke test for vacuum leak.

Actually no. Even now with -50% STFT, the throttle response is fine.

4 cylinder engine has STFT2?

This Friday anyone want TT? I'd like to use diagnose other PE cars to check your fuel trim behaviors. Free engine diagnostics

TT at SS15 Asia Cafe this Friday night. Anyone interested?

Looks good. Then we tentatively set Friday 8PM onwards at Asia Cafe?

I'm thinking to use this lube next round. But no API Standard specification? What I can see is very low sulphated ash content. http://www.mymesra.com.my/?ch=mm_2011&pg=p...pl=2011_article

This post has been edited by mengsuan: May 23 2012, 12:14 PM

You're installing yourself?

I'm interested but do we need to remove existing rubber? Do we still have space for such rubber?

When are you going to install? If I join your purchase, help me stick also

My door panel all very clean. I polish and wax the door as well

Just in case rain went in and dirt the surface, I can prepare cloth and polish/wax too

How much is the cost for persona?

This post has been edited by mengsuan: May 23 2012, 03:16 PM

Yes I do. After waxing, those water drop stain will be easier to remove.

xandras, have you observed your fuel trim on the move?

I need to find the datasheet of the ECU. To me, it seems that -50.0% would mean fuel trim unobserved/inactive. Every time I try to upset the fuel trim by accelerating, it returns to 0% and few seconds later, it became -50.0%.