Emanage map sensor woes

[m35stagea]

Emanage map sensor woes

So im trying to sort out this emanage and I cant get a clean map signal.

I have read lots about what others have done on other cars however i am looking for what people have done soecificly on their vq's to rectify this issue. obviously the tune is loading multiple cells and not running properly.

Fuel filters

Plastic lines

Snubbers

Mig tips

Long hoses.. 

 

What has everyone done?

 

black is boost

red rpm

orange is timing 

Edited November 9, 2016 by m35stagea

[KiwiRS4T]

What kind of MAP sensor and where and how is it connected?

[m35stagea]

Genuine greddy td into fuel reg

[KiwiRS4T]

You shouldn't T anything into the fuel reg use another source.

[m35stagea]

You shouldn't T anything into the fuel reg use another source.

Thats what i thought however this is the only source that isnt close to the runners or throttle body.

[KiwiRS4T]

Do you have a boost gauge?

[m35stagea]

Of course. but that doesnt help. 

 

The problem is what the ecu is seeing

[KiwiRS4T]

14 hours ago, m35stagea said:

Of course. but that doesnt help. 

 

The problem is what the ecu is seeing

Um I am suggesting you T your ecu into the boost gauge line rather than the FPR line.

[m35stagea]

Um I am suggesting you T your ecu into the boost gauge line rather than the FPR line.

Yeah its too clise to the runners and will make the problem worse.

Out an 0.8mm welding tip in line and its cleaned it up a bit.

[666DAN]

Looks like noise from voltage oscillation. Have you blown into the tube yourself to make sure the signal is linear? 

[666DAN]

Took my feed off the actuator and it didn't flinch.

[m35stagea]

6 hours ago, 666DAN said:

Took my feed off the actuator and it didn't flinch.

Of a vq?

As you can see with the restrictir the signal is alot cleaner now. so it cant be simply a voltage issue.

[666DAN]

On an RB25.....the thing I do notice is your boost spikes when your RPM drops. What sort of boost control are you using?

[m35stagea]

3 hours ago, 666DAN said:

On an RB25.....the thing I do notice is your boost spikes when your RPM drops. What sort of boost control are you using?

Wastegate. 

 

Thats when ecu retards timing to shift gears... dumps fuel. and bang spike.

 

 

[666DAN]

Quote

Wastegate.

A little more detail would be good

[m35stagea]

Wastegate.

A little more detail would be good [emoji4]


Boost is running on wastegate pressure.