New guy with Alfa V6

[pingchan71]

Greeting from Hong Kong,
My car is a 2003 Alfa Romeo 156 2.5 V6 6spd. I have this car for 5 years but only recently I wanted to explore the ways for drive her more economically. I started my hypermiling since half way of last tank of gas, and the result was promising as already seeing 0.7km/L improvements as shown from the trip computer.

here is a list of mods I have currently
1) alu under engine tray
2) lowered suspension
3) high performance air filter
4) high performance 2.5" cat-back exhaust

Today I have removed the front strut bar to save some weight

Next idea I have is to improve on low-rev power since my experience with hypermiling will use more low-rev range about 2k~ 2.5k rpm of the engine.
I am considering ECU remap as I read it improve all range engine efficiency and adapt with aftermarket mods that I have (air-filter & exhaust) and generally provide better fuel efficiency when drive sensibly.

I see many physical mods being recommended here however I do not found much info about chipping their vehicle. Can someone please share their experience ? or what kind of results should I be expecting?

Thankyou for reading

[renault_megane_dci]

Hello and welcome.

I am not very knowledgeable about chip tuning on gas engine but I believe it has to do with boosting fuel pressure to restore performance potential that is already there before the car emissions are taken into account.
I don't think chip tuning is gonna allow for more MPG out of a gas engine.

At least it depends on the route you have to use.

Maybe if you do a fair amount of highway it can improve the pulse of your pulse & glide ?

[pingchan71]

Thankyou for your feedback, for petrol non-turbo ; all I know is that it suppose to optimise its air/fuel ratio on different spots on the rpm curve, advance timing as well as improve throttle responds. Thats why I want to see what you guys thinks.

I havn't understood what pulse & glide means, I'll read on more soon.

[solarguy]

Pulse and glide means you accelerate at an efficient pace, and once you hit a certain speed, you disengage and coast. That could be engine on (idling) or engine off coasting. Once you hit your lower speed limit, you accelerate again and coast again.

I am not a fan of engine off coasting for safety reasons...

But that's what pulse and glide means.

troy

[renault_megane_dci]

And it is more worth the hassle at certain speed : above 50 km/h / 30 mph