New MAF ?

[BAzombie]

I'm curious if I need a bigger MAF sensor. I installed ported PI heads & intake last spring and this year I'm installing a 75mm TB & plenum from Accufab.

I've had a check engine light all last summer for "low idle air". I also have the "washer trick" in to stop the rpm's from hanging before returning to idle.

Do you think it's the washer opening being too small or from the stock MAF w/ ported heads. The car is still sleeping off the winter, but I'm fishing for ideas about getting rid of the CEL for inspection this spring.

Any ideas guys?

 

[TBapp3]

I bet a simple tune on that SCT X-Cal will get ride of the CEL Bert, Not sure when a bigger MAF sensor is needed though...

 

[ShelbyGT]

you shouldn't need a bigger maf yet. the stock maf will support like 440 hp. ( i read that in the ford racing catalog)

sounds like you're having a problem with the iac valve. i'd try taking that washer out, my car hated that "trick"

if that doesn't help, try a new iac

 

[BAzombie]

Thanks guys.

I was leaning towards the washer not having a big enough opening just never got around to modifying it before I put the car up for winter.


Todd, I am still running on the stock tune but that will change this spring. You didn't change your MAF when you did your TB so I didn't think it would be necessary. I just wasn't sure if the ported heads and LT headers would screw with the readings.


Damn I wish spring would hurry up and get here.

 

[TBapp3]

I know it, the 50 degree weather the other day was a TEASE!