hi everyone could anybody tell me why after fitting a new mass airflow sensor the engine needs retuning :confused: any info would be welcome thanks

no, should just be plug and play. What problems are you getting?

 

The only thing it might be worth doing is resetting the ECU so it self learns everything again.

hi it does say that retuning is required after fitting it so tomorow is the day of reckoning and at the moment it is running even worse than it was with the old one

Who says retuning is needed ? nothing is needed, you simply plug it in and thats it.

IIRC you said you got a "new" one cheap? IS it deffo the right part number?

And you sure the maf was the prob?

hello since fitting the new maf the car is a lot better acceleration wise ,,still got that flutter low end though ,,so back in thursday to get read out on conzult ,,keep ya posted

When you get it on the conzult, get them to reboot the ECU so it relearns. OTherwise it's still using the average from the old and new readings.

Yeh I'd disconnect it and leave it a day to reset. As the guys said, 9x's out of 10 you stick a new maf on and hey presto, you can go over 3k again and no popping or missing! But depends how long it was ****ed for and if something else is giving you grief too. GL!

cheers for all the info guys

hello the latest on this maf saga went back to garage the tuner had reset the ecu wiped all fault codes which orginally said it had a det sensor fault and today the code for det sensor fault has popped up again ,so the car is running defo better but would the det sensor cause that flat spot ? i have got a det sensor on the way from usa so best relocate that to see if that works . is the relocation on a non turbo det sensor the same as the twin turbo as shown on the link on this site ,,i would be made up if i can get to the bottom of this prob ,, so i would very happy for any help to solve this cheers

get yourself the resistor (think it was 1 Mega ohm but would have to search) and bypass it as a temporary measure till your new one arrives. Then you'll know if that's causing your issues :)

hi i not famliar with fitting a resistor or with how to run a bypass any links to show how cheers

http://zhome.com/ZCMnL/PICS/detonationSensor/detonationSensor.html

cheers vijay i will let you know how i get on

Det sensor wont cause flat spots, if its faulty it will jyst enter safety mode and enable actuator boost. unless its intermitent?

hello all well i,ve had a gutfull now replaced maf replaced det sensor and loom ,still engine running lumpy as you pull off missing etc i feel like getting the sledge hammer on it ,,,not a happy chappy is i ,,any body got a clue what the likely cause is because at the moment if i can find an unburn,t pier i can drive off i will the way its going !!!

PTU?

Air leak?

PTU connections!

Coil packs?

Coil pack connectors??

Injectors??

Injector connectors???

Plugs??

Fuel filter?? Fuel pressure??

Fuel pump??

Water temp sender on front pipe??

There are lots of things to check

Compression check would be useful too!!

PTU connections!

Coil packs?

Coil pack connectors??

Injectors??

Injector connectors???

Plugs??

Fuel filter?? Fuel pressure??

Fuel pump??

Water temp sender on front pipe??

There are lots of things to check

Compression check would be useful too!!

 

oh yes and those :D

Ive done all those checks and more but i still get slight hesitation :(

 

The love of zed ownership :D

mmm food for thought guys lots of it , previous owner said coil packs, but would it show up on tuning diagnostic machine as engine seemed ok to the tuning fella