u can install ngv.. :) water/methanol u'll need to buy the water/methanol liquid always.. and it only save u 30-40% of ur petrol.. eg ur full tank petrol rm100, so u have to pay around rm60-rm70 + methanol liquid maybe around rm15-rm20, so in the end u dont really save that much.. if ngv, u can save 70% eg ur full tank petrol rm100, u pay only rm30 for ngv.. i think the methanol set is ard rm2-3k.. ngv ard rm5k++ mixer system.. i would suggest ngv cos its been use for around 60 years in msia.. so far no reported cases involving explosion of ngv if u use the right set (don't compare what u read in the news cos they use the cooking gas tank to store the ngv which is reali stupid >.water is quite new and recent.. so its up to u to balance the pros and cons and decide which fits ur style.. :)
Im not really agreed with you baby,
As my experienced with my volvo (carb-manual) for more than 2 years using multifuel system, NGV+HHO+Water Injection. My gas consumption only rm0.045 (hiway-normal drive with a/cond). Water injection (MW50/50) actually not really helps in terms of saving & power but HHO yes, where hho produces 3x power than petrol & 6x than NGV. My volvo fitted with 17" rim & 62ltr full metal tank & i believed can gain more savings and power if reduce the weight.
Water Injection actually has been introduced very long time ago, before INTERCOOLER SYSTEM was intro. Applied to those high performance engine with Turbo to reduce heat to the engine. One of famous brand pioneer in this tech was SAAB. The tech sloowly dissapear when INTERCOOLER was intros.
Based on my own set up of my Water injection system, it's only cost me less than Rm100 (using high quality materials), & HHO system (hydrogen) cost me around less than rm300 (depends to quality of the materials).
We don't have to worry about the NGV tank where the tank has been designed & constructed with safety features of heat & load pressure. That's why our tank normally will come together with HT cert by manufacturer & form 131a/130a from DOSH/JKKP. The only think to worried is the gunuine of the cert!!
If the cert is genuine, don't worry..the tank can withstand the pressure (if im not mistaken) up to 470bar where our NGV station only produce pressure max about 250bar!!
To get the best GC & power in yr NGV system, most important is yr tuning, spark plug, regulator set up (brand) & yr right foot...neither mixer or sequential.
For info, im one of the person involved with company that producing high pressure vessel/tank/Heat Exchangers, and liased with local authority (if local usage) or 3rd Party (worlwide recognised) for inspection before tank/vessel/Heat Exchangers certified safe to be used. Even we are not producing NGV tank but Code/standard/spec to used for engineering & constructions almost the same...maybe higher than that (depends to client/country req)..