Fuel Mileage
#31
04-08-2013, 02:03 PM
Hi,
I'm new here - first post.
I'm Chris from Germany.
If you run a H3 3.5L in Europe the power and fuel consumption is quite disappointing.
But there is a help.
Last week I've ordered a tuning software to get access to the ECU.
Today with great success I reprogrammed the spark map and did a gentle change to the fuel map - and surprise surprise - the engine has plenty power and torque at low revs and maybe needs a lot less fuel.
The injection values look very promising.
The next few days I will see how the consumption drops.
I'm heading for 23-23.5mpg.
Cheers
Chris
I'm new here - first post.
I'm Chris from Germany.
If you run a H3 3.5L in Europe the power and fuel consumption is quite disappointing.
But there is a help.
Last week I've ordered a tuning software to get access to the ECU.
Today with great success I reprogrammed the spark map and did a gentle change to the fuel map - and surprise surprise - the engine has plenty power and torque at low revs and maybe needs a lot less fuel.
The injection values look very promising.
The next few days I will see how the consumption drops.
I'm heading for 23-23.5mpg.
Cheers
Chris
#34
04-10-2013, 02:42 AM
The software came from HP-Tuners.
HPTuners.com >> Performance At Your Fingertips
At the moment I'm on 18.8 mpg after adjustment with LPG fuel.
I think on 98 octane fuel it will need 20% less.
HPTuners.com >> Performance At Your Fingertips
At the moment I'm on 18.8 mpg after adjustment with LPG fuel.
I think on 98 octane fuel it will need 20% less.
#35
04-11-2013, 12:27 AM
Just curious, how difficult (or dangerous) would a DYI pcm tune be for a newbie? I'm relatively computer savvy but only remedial auto knowledge. I'm guessing its mainly inputing the proper values? Or, is this something to definitely leave to a professional?
#37
04-11-2013, 02:10 AM
As with all brain surgery - there is always a risk.
As far I've noticed the software has many safety routines to prevent damage.
Yesterday I had to remove the radio fuse to make the flashing going because the aftermarket radio had send signals the software did not know and so the writing was stopped.
The other thing is, you have access to hundreds of adjustments. What would you like to change and could this change be harmful to the engine?
I do tune engines for about 20 years (just as a hobby, not professional) and have now some experience with hopping up engines. Before I only did it with grinding, enlarging mechanical parts, other carbs and stuff.
This now was the first time I've tuned a modern engine with just a chip.
But it works so far and is easy done. But because it is so easy the risk of pushing it too far is there and could kill the engine.
Cheers
Chris
As far I've noticed the software has many safety routines to prevent damage.
Yesterday I had to remove the radio fuse to make the flashing going because the aftermarket radio had send signals the software did not know and so the writing was stopped.
The other thing is, you have access to hundreds of adjustments. What would you like to change and could this change be harmful to the engine?
I do tune engines for about 20 years (just as a hobby, not professional) and have now some experience with hopping up engines. Before I only did it with grinding, enlarging mechanical parts, other carbs and stuff.
This now was the first time I've tuned a modern engine with just a chip.
But it works so far and is easy done. But because it is so easy the risk of pushing it too far is there and could kill the engine.
Cheers
Chris
#38
04-11-2013, 02:12 AM
As with all brain surgery - there is always a risk.
As far I've noticed the software has many safety routines to prevent damage.
Yesterday I had to remove the radio fuse to make the flashing going because the aftermarket radio had send signals the software did not know and so the writing was stopped.
The other thing is, you have access to hundreds of adjustments. What would you like to change and could this change be harmful to the engine?
I do tune engines for about 20 years (just as a hobby, not professional) and have now some experience with hopping up engines. Before I only did it with grinding, enlarging mechanical parts, other carbs and stuff.
This now was the first time I've tuned a modern engine with just a chip.
But it works so far and is easy done. But because it is so easy the risk of pushing it too far is there and could kill the engine.
What I tune normally:
Cheers
Chris
As far I've noticed the software has many safety routines to prevent damage.
Yesterday I had to remove the radio fuse to make the flashing going because the aftermarket radio had send signals the software did not know and so the writing was stopped.
The other thing is, you have access to hundreds of adjustments. What would you like to change and could this change be harmful to the engine?
I do tune engines for about 20 years (just as a hobby, not professional) and have now some experience with hopping up engines. Before I only did it with grinding, enlarging mechanical parts, other carbs and stuff.
This now was the first time I've tuned a modern engine with just a chip.
But it works so far and is easy done. But because it is so easy the risk of pushing it too far is there and could kill the engine.
What I tune normally:
Cheers
Chris