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View Full Version : Evo 5 with ECUFlash - how do I change boost?


gothicsanta
23-01-2010, 12:51 PM
Hi

Finally got around to wiring up the Openport 2.0 and ECU Flash has now downloaded the ECU map :smile:

The information wasn't quite what I expected. I thought there would be a boost level that I could simply change - I want to go from standard (0.8 bar?) to the safe limit for my engine (Evo 4) which I believe is 1.4 bar?

Can I do this easily myself with the ECU adding extra fuel as required to cope with the extra boost....or do I have to completely remap :unsure:

Many thanks!

evonut270
23-01-2010, 06:40 PM
The ecu won't just adjust the fuel to suit if you raise the boost level.when you raise boost pressure it effects timing and fuelling as well as other parameters

gothicsanta
23-01-2010, 06:42 PM
So next step is buy & fit wideband and then I will need software for mapping as I can't imagine using ECUFlash to map?

When I've mapped cars before I've had software showing the zone on screen that is currently being used and then just hit + or - on the keyboard to increase/decrease fuel as required...

What are the options with the Openport/Evo ECU..?

anttist
23-01-2010, 06:50 PM
ECUFlash is the software to map with. Currently live mapping is not possible so mapping consists of datalogging with Evoscan, examining the datalog, changing the map with ECUFlash and the going back to datalogging again. Repeat until you are satisfied with the results :)

It's not as bad as it sounds. Fuel is pretty easy to get right, ignition requires bit more time.

gothicsanta
24-01-2010, 11:04 AM
ta, is there a "how to" guide anywhere?

evonut270
24-01-2010, 11:15 AM
Go onto evolutionm.net and search for "how to tune an Evo"

todd
24-01-2010, 02:45 PM
you need a boost controller to up the boost it cant be done in the rom

AndyF
25-01-2010, 08:11 AM
you need a boost controller to up the boost it cant be done in the romIt can be done Todd but the problem is the std solenoid. With it maxxed out (with the std P-jet in place) you only see around 1.2 bar however you can control a 3 port solenoid using the code in the ECU (assuming you have the correct size resistor in the feed to the solenoid)

Andy

todd
25-01-2010, 10:23 PM
It can be done Todd but the problem is the std solenoid. With it maxxed out (with the std P-jet in place) you only see around 1.2 bar however you can control a 3 port solenoid using the code in the ECU (assuming you have the correct size resistor in the feed to the solenoid)

Andy

I knew that :blushing: :lol::lol: prob easier for op to go with ebc .