New MAF but g/s still low

[Jade S3]

Hello guys, im new here, been browsing over 2 and a half years ago though, alot of great cars and people here. My MAF used to flow between 183-189g/s before, then i fitted a new bosch maf and its still the same, what could be wrong? .
Its clamped tight, screws are tight, airbox is clipped in properly. No boost leaks, tests were done to redline in 3rd gear, oem maf housing, standard fpr. Thanks

 

[Jade S3]

Boost is at 1.5 Bar/22 psi, very little timing pull. Only fault code is a G235 EGT sensor implausible signal intermittent, engine temp gauge was at 90 deg. Had enough fuel, ESP was off. Air filter is a new oem unit

 

[s3dave]

Sounds about right with the mods unmapped?

 

[Jade S3]

Hi dave, its mapped. Thanks

 

[s3dave]

Have you done any logs? is the splitr dumping to atmosphere?

 

[Jade S3]

I've done logs, wont be able to post it now. No the dv is in full recirc. , aquamist is setup perfect.

 

[s3dave]

what injector size for your aquamist? are you running a mix or water? Have you tried it with the wmi off?

 

[Jade S3]

Injector size is on the pump and thats behind the bumper lol, i run a 70% methanol mix with 30% water, cant switch it off because the map is aggressive and it will pull alot of timing. Btw the dv is set at 28 clicks and thats perfect on my car

 

[s3dave]

Do you think the ecu could be holding back because of the EGT fault?

 

[Jade S3]

The unitronic dealer here says it wont, why would it hold back airflow yet give full boost/timing, its strange. The car supposed to be flowing 200+ g/s, sorting out the EGT next week

 

[s3dave]

VCDS.... display groups 034, 043 and /or 046, channel 2 will give you sensor output... depending on revs can read from 350degC to 700degC
apparantly If a sender fails, the charge pressure is reduced to a safe level and an emergency enrichment characteristic (engine speed-dependent) is used.

 

[sportstractor]

does it drive ok? not hesitant at all?

 

[Jade S3]

Drives lovely, killed some pretty impressive cars with it. Launches great and still pulls strong in 6th, revs up quick and covers ground fast

 

[s3dave]

Is you fuel consumption low?, i think it is throwing fuel in....imo

 

[Jade S3]

Its nasty on fuel, before i would get 1100km on a tank, now i dont even see half of that

 

[Welly]

Its nasty on fuel, before i would get 1100km on a tank, now i dont even see half of that

Hmmmm. EGT is a very important piece of kit on the wideband cars. It not working properly may well have this effect.

I'd deffo start with fixing the known faults.