Reply to thread

See what others are reading now! Try Forums > Current Activity

Message: <blockquote data-quote="Acoustic" data-source="post: 126731" data-attributes="member: 728">HiKnocking ...... as mysterious as it may be - due to my limited knowledge .... is due to the fuel properties / qualities - as priority.high octane was once told to me as not more powerful, but when analyse closely, allows the slower expansion of the combustion explotion. It is actually less powerful, but more longevity friendly.regardless...... ignition mapping plays the 2nd more important role hence no amount of fuel ajustment will be able to solve this problem.fuel delivery timing, or should I say how early it spray at various RPM also affects knocking.i.e. at 1,000 RPM, it is generally set to 100 BTDC, while linearly increases to approximatelt 300 BTDC at 9,500 rpm = nearly one complete cycle advance - this is due to air-flow speed differences - the engineer who programmed the ECU will have to take into account of injector distance to combustion chamber.Hence, if you've modded the engine here and there, a little everywhere, all these things get affected......Hope this helps.Oh, you should realise by now, and I repeat, no amount of fiddling with the fuel will solve the problem....We should also consider the application of turbo, the way it uses injectors will be different from NA.i.e. turbo air flow may be more than NA, however it does not mean faster .... having a much bigger injector often means at low rev at low duty cycle the injectors shuts every quickly - if the particles were unable to follow the flow into the combustions - which always happens for all engines forced induction or NA, will suffer knocking... for reasons other than not enough fuel - right?Hmmm, I wonder did I say it right? anyway, just want to introduce the effect of the world of TIMING of various issues for your considerations. TIME DOMAIN.</blockquote>

Verification

The Marketplace Latest

Mitsubishi lancer Evo x front bumper
- Started by jeff6126
- Exterior and Body
Honda jazz fit gk flrs body kit
- Started by jeff6126
- Exterior and Body
Proton S70 body kit
- Started by jeff6126
- Exterior and Body
Proton saga BLM body kit
- Started by jeff6126
- Exterior and Body
Perodua bezza ~accident repair
- Started by jeff6126
- Exterior and Body
Mercedes Benz W205 C-class GT grille
- Started by jeff6126
- Exterior and Body
BMW E90 ~brake caliper spray ~rim spray
- Started by jeff6126
- Exterior and Body
Honda city gm6 FL front bumper
- Started by jeff6126
- Exterior and Body
original rare spec Rays Volk Racing RE30 15x7jj...
- Started by david tao
- Chassis and Wheels
original rare Rays Volk Racing TE37 SAGA S-Plus...
- Started by david tao
- Chassis and Wheels

Posts refresh every 5 minutes

Fs:235/45/17

hankook rs2 for sale used around 5000-7000km
offer me a price

Official Nissan GTR 2008 - photos and video inside from Goodwood

Lots of details on the new car. As well as some technical information a video and interview with the driver and also lots of pictures. More pictures still to come...

BOV service

Hi all,

I`m using SARD R2D2 Bov. Bought new 2 years ago.
Does anyone know how to service it?

Thanks.

Search

Enjoying Zerotohundred?

Log-in for an ad-less experience

Reply to thread

The Marketplace Latest

Mitsubishi lancer Evo x front bumper

Honda jazz fit gk flrs body kit

Proton S70 body kit

Proton saga BLM body kit

Perodua bezza ~accident repair

Mercedes Benz W205 C-class GT grille

BMW E90 ~brake caliper spray ~rim spray

Honda city gm6 FL front bumper

original rare spec Rays Volk Racing RE30 15x7jj...

original rare Rays Volk Racing TE37 SAGA S-Plus...

Posts refresh every 5 minutes

Recent Posts

Thrills and Spills at Zhuhai: Porsche Carrera Cup Asia Rounds 3 & 4 Recap

Proton Records High Demand for S70 with 1 Unit Booked every 4 minutes

Toyota Malaysia Enters Regional GT Racing with TGR Racing Malaysia

Home Win and Double Podium for Akash Nandy at Sepang Season Opener

Darker Design : Mercedes-Benz Launches GLA Nightfall Edition in Malaysia

Search

Online now

Enjoying Zerotohundred?