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Err.. one simple mistake here leh.. Percentage doesn't "Add" to accumulate across the month... doesn't work that way. If 1 month save 5%, across 12 is still 5% based on total fuel pump... because, 100% of fuel is different from you pump a month or a year.. the percentage point is always relative.

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IMHO, this product is highly questionable since the entire mid-range 2500 to 4000 rpm experience a drop in power. The side-effect is that you would have to step more of the gas pedal and guess what....that negates the fuel savings. My advice: Don't buy!!!
check out .the car dyno is a corolla...at that range the vvti kicks in .the honda vti dyno with z-stab cuts out when the vtec cuts in at 5500rpm...
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Neutral Newbie

I guess it does work... But like wat the brudders said in this post... You'll drop ur low-end torque... But all in all, I'd rather look for some other product that ACTUALLY works... [:p]

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Neutral Newbie

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Some local engineering guy invented it. Supposed to save fuel by preventing the motor from overcharging the car battery... Donno will work or not... any comments?

 

Hope this help sly.gif

 

Electrical modifications (grounding/stabilising)

Devices of this type include: Z-Stab

 

As well as the air and fuel related devices decribed elsewhere on this site, there are also many products that claim to improve economy and/or power via changes to the vehicle electrical system. Chiefly these are grounding wires (to fit between the engine block and the vehicle body) and various voltage stabilisers.

 

Certainly poor electrical systems can cause significant problems. Most obviously, a poor earth link between the engine and body makes starting very difficult, since there is a large voltage drop when the starter current (100 - 200A) passes through the high resistance. What is far less clear is that a vehicle whose electrical system is in pretty much "factory" condition could benefit from adding such devices.

 

Modern vehicle wiring and ECUs are already designed to operate in a harsh electrical environment. They cope with conditions from maybe 8V starting with a nearly-flat battery to 16V on a boost charge, and with electrical interference from mobile telephones etc, without failure. The ECU runs internally at 5V or even less and is heavily stabilised to ensure the processor runs fault-free at all times. Many modern ECUs repeatedly self-check and would shut down the engine entirely if any kind of fault condition occurred. Overall, it is hard to envisage how a marginally more stable electrical supply could significantly improve engine economy, emissions or performance.

Equally, extremely precise control of the engine is essential to meet today's strict emissions standards. If electrical problems really did lead to significant errors in fuel delivery or ignition timing on cars in good working order, it seems highly unlikely that such cars could pass emissions tests.

 

It is also worth noting that engines are generally developed on test beds using highly stabilised power supplies (not using the vehicle alternator), but the test results and ECU settings carry over quite accurately to in-vehicle use - ie there is no obvious worsening in performance with the "less stable" supply.

 

Where voltage stabilisers and the like probably are of benefit is in improving sound quality on in-car entertainment (ICE) systems.

 

Cheers sunny.gif

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Neutral Newbie

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he he he... sweatdrop.gif

I guess Z-stab does work... tongue.gif

 

thumbsup.gifthumbsup.gif If u r to install it for ICE then it's thumbsup.gif for other I guess the article says it all tongue.gif

 

Cheers sunny.gif

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Neutral Newbie

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But the car stereo and aircon working fine leh... No need install Z-stab can liao... laugh.gifrolleyes.gif

 

Stock ICE wil be OK with VS nod.gif

If u mod the ICE then a VS will make the ICE system better wink.gif

 

Cheers sunny.gif

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Neutral Newbie

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shocked.gifdizzy.gif Got ppl mod ICE also ah? But... Not common rite? It's only sound system upgrade... sweatdrop.gif

 

Aiya, I mean mod ICE = upgrade the sound sys sly.gif

 

Juz like mod car = upgrade the car tongue.gif

 

laugh.giflaugh.giflaugh.gif

 

Cheers sunny.gif

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Neutral Newbie

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yo bro...me using the Z-stab but its for my ICE....directly installed to alternator thumbsup.gif

 

Any comments rolleyes.gif After and b4 Z-Stab wink.gif

 

Cheers sunny.gif

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Neutral Newbie

i use it to stabilise my ICE....the alternator can get a bit noisy...the Z-stab helps...not in the power or the FC though...mine is purely for ICE....

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