the 399 maf is awesome specially with the evo ecu. i dont have any really bad leaning out issues and all my crap for fuel and timing is mostly there. still some tweaking to do but other than that its golden.


josh

 

Did you ever get your idle figured out? I have smoothed it out completely, it idles absolutely perfect now

 

Well I have a feeling part of my lean issue is just due to my lack of knowledge in the whole tuning thing. As you can see though I managed to dramatically bring them down in my main area of concern (3500-4500), the first set with the 13 in there my fuel map was literally bottomed out at 7.4 and my maf scale maxed. Now with 11.8 in that same rpm range with little changes to different tables

 

well i actually welded back in my front o2 sensor that should be there. i think i need a new sensor but it does idle where it should. i had a dummy narrowband signal coming over from my wideband which i dont believe was giving the ecu the correct information.


josh

 

Ah I see gald you got her idling better anyways

 

Yo guys anyone out there know if a bored fuel rail would supply my injectors with more fuel? To be more specific I think my 440cc injectors are not getting the fuel supply due to my stock fuel rail not able to handle the flow of the walbro and 440cc.

 

is this a problem im going to run in once I turbo my car? I thought the 440cc were a direct fit and if that was the case they should work just fine?

 

Yes the 440s are a direct fit and I have since this post discussed with senate and determined the fuel rail probably is not the cause, it could be my stock fpr, I am looking right now to either get an evo fpr and mod my fuel rail to fit or get another aftermarket rising rate fpr.

 

what kinda problems you having? im still runnin stick pump and fpr without a problem.

josh

 

If you dont mind JRR can you post some of your afrs with a wot 3rd gear run? I cant for the life of me get mine below the 12.0 mark around 4-4.5k rpms. I had it once but for all I know it could have been the weather that day giving me the better afr readings

 

I ordered a new fuel strainer and rising rate fpr hopefully they will get here soon

 

im running a bored fuel rail with 440s and an aftermarket fpr, i think im getting enough fuel lol, also is the 399 maf the evo one, if so im gonna get it if it makes a difference although i thought the evo and lancer maf were the same.....

 

if you have the evo ecu the 399 maf is a very very good compliment. the stock lancer maf is the 605. a lot of guys run the 501 which is out of an eclipse and the 399 to my knowledge is the largest one and thats n the evo's.


josh

 

um for the 399, what adapter do we need for fitting on filters, the lancer one wont work will it

 

its the same hole spacing but to take full advantage of it id use a 4" adapter and filter.