Petrol Talk

[ahcash]

From my understanding (correct me if I am wrong), it is the ECU which makes the difference.. the engine will remain the same unless modification are made to them..

Companies like Powerchip has done most of the work to come up with an aftermarket ECU to work best with the 98RON fuel... (or 95RON fuel)

Power gain would be from Standard 81kw to 93kw and Torque jump from 143Nm to 164Nm.

You can read their FAQ here...http://www.powerchipgroup.com/faq/index.asp

I was looking into that at one time but warranty issue put me off.. same goes to any mod to the car..

I am like poeter, putting 98RON petrol solely for cleanliness of the engine and better emission

[vividjazz]

poeter said:

What is the main difference between an engine that is designed for 91RON and 95+RON?

Theoretically can there be a way to tune the L15A to use 98RON to take full advantage of the 98RON?

I'm aware that our jazz dont benefit from 98RON for economy and engine performance. However, i'm am putting it in for the sake of keeping a cleaner engine for the long run.

I personally notice significantly better performance with 98RON BP Ultimate and 100RON Optimax Extreme fuel in my Jazz. My understanding is it will take advantage as long as it doesn't bring it outside the mapping/program. The cars are fuel injected with oxygen sensors so will adjust within the predefined limits. You can adjust the timing so as to take more advantage of the higher octane fuels but then it will probably run rough if you ever put 91RON in it again.

The rule of thumb I was always told was if you can feel a performance difference then the difference must be at least 10% unless your really sensative.

[poeter]

Yea, i've had a read about the powerchip for the Jazz.

From the sounds of the website, it seems like a dramatic power and torque increase.

Despite the improvement in performance but i wonder if this will also mean a horrible fuel consumption.

I'll be interested in getting it after the warranty finishes.
Ahcash, would you have any idea how much it would cost to buy the chip and install?

[SmellyTofu]

I wouldn't touch powerchip or any of those companies that claim to increase performance. They have been caught out producing so called chips when they haven't even tested it on a car. If you want real power, go put turbo or supercharger on it. Don't waste money on these crap. Just remember the day annual emission testing happens, you'll be stuffed.

[ahcash]

poeter said:

Yea, i've had a read about the powerchip for the Jazz.

From the sounds of the website, it seems like a dramatic power and torque increase.

Despite the improvement in performance but i wonder if this will also mean a horrible fuel consumption.

I'll be interested in getting it after the warranty finishes.
Ahcash, would you have any idea how much it would cost to buy the chip and install?

The chip itself cost $890.. not sure about installation.. my guess is you will be looking at $300 - $400 for installation... Now you know why I am still a bit hesitated.. If only it is half the price.. ;D ;D

[vividjazz]

To get more benefit from any chip you need to upgrade the intake and exhaust including headers, cat and b-pipe first. You also need these things if your going the more hardcore Paxton or Garrett route.

I had a custom written chip done years ago when I had a Suzuki GTi. It had to be custom done to take advantage of the specific characteristics of a setup. ie. Gennie headers and exhaust and K&N intake. An off the shelf chip will be written for a stock car. The chip raised the rev limiter, increased the idle (otherwise it would have stalled at idle), provided a small power increase particularly in the mid range but at the cost of emissions and a bit of fuel economy. Got to remember these were only MPI DOHC 1.3L engines with no varible valve timing.

The chips were a lot cheaper back then at around $250 installed. With a decrease in competition caused by a number of amalgamations the price has shot up. The gains attainable on some cars are significatly greater than on others. You won't see the same gains on any Honda that you'll get on a Falcon or Commodore.