Thread: MAF Screen

It directs the air over the maf. With out it the air will flow differntly so yes. It will throw off your trims.

So if I put one in I would just need to reset the fuel trims?

You would need to tune it again to zero them out

So I just need to plug in the powertuner and reset the fuel trims right?

no you need to do a maf tune

****. Alright.
Well if it was tuned with it off, will it still be affecting my idle? It's rough as **** right now, but I think it's just cuz of the bad engine mounts. Also I'm getting about 15mpg driving nice, see thread below this one.

Make sure you have no vacuum leaks.

i just got a canned tune so i suppose i oughta put one back in huh?

If your car runs like **** yes, if not just leave it.

meh.. runs fine. guess i won't bother

I would just leave it then.

If it idles like sh!t then I bet 110% it is no way possible it is your TB screen. Check elsewhere.

Originally Posted by bluegtp91

If it idles like sh!t then I bet 110% it is no way possible it is your TB screen. Check elsewhere.

It can be. Took mine out since it was about cracked in half, the car started to idle like sh1t, put a new one in, and problem solved.

Must be that stock throttle body

My Ported LS1/De-Screened 85mm MAF had only idle issues from a aggressive cam

GM installed that screen for a reason.

Leave it on!

Originally Posted by 01GTP

Make sure you have no vacuum leaks.

Had a huge one, fixed it, don't think there are any more.
The hydraulic engine mount grounded out and the tans mount is bad. I think that's what's ****ing up the idle. Ordering new ones from rockauto tomorrow.