Really bad misfire itbs just fitted

[Fraser.J.]

Just got my itb set up and running, but its got a very bad misfire, changed leads and coilpack, no difference, changed maf sensor, again no difference, its running a gen90 ecu with a basemap supplied by ktec.

Any other ideas?!

 

[Ph1 Tom]

Vac leak or bad/wrong base map. Perhaps a wire wrong or bad connection on the ECU wiring as you need to move pins around on the Ph1

 

[Fred@BTM]

what MAF sensor?????????????

 

[Fraser.J.]

I'm going to check all pins tomorrow never had time today.

The air flow sensor? Was told to drill the backing plate and fix into that?

 

[Cupman29]

It's a map sensor mate.

​Sounds like a wiring issue to me.

 

[Fraser.J.]

Thought the map sensor was the black one normally on the left hand side of the inlets and the air flow sensor was the small grey on in the right side of the inlets?

I'm sure RS tuning said the map sensor is now void with itbs but still need air flow and fit it into the backing plate?

 

[Russ_16v]

The small grey one is the air temperature sensor dude

 

[Fraser.J.]

So do I need that and the black MAP sensor fixed into the backing plate?

 

[mi16chris]

So do I need that and the black MAP sensor fixed into the backing plate?

No u use tps as load with itbs so u dont use ur map sensor at all

 

[Fraser.J.]

Do I need any sensors fixed into the backing plate?

 

[Dan@SJM]

Air temp

 

[RSTuning]

Is it missing on just one cylinder or more?

Pull the injectors one at a time and see if it drops that cylinder or makes no difference.