Lean makes the car feel snappier at part throttle and people interpret this as better performance. But it does not necessarily mean that true WOT outputDark Eternal said:I took the screen out of mine and have had NO negative effects. It feels liek it could have improved throttle responce but thats about it.
If you wanna do the mod...do the mod it's your truck. I did this mod bout 18 months ago...no problems...but no noticeable improvements either.BeAsT said:http://www.sshotrods.com/performance/gmtruck/fullsize/99up/maf/
Just wondering if it really makes a noticeable increase in hp. Also will it hurt anything by taking the screen out?
I was going to do that if any of my coils ever went bad :naughty: , just have to keep thinking of the trouble I'd get into if I ever got caught, that stops me2k1slvrdo said:i did that mod... i didn't notice any adverse affects.. I kindof wanna get a rental truck and switch out my maf since i've heard horror stories.
Lean makes the truck feel snappier at part throttle and people interpret this as better performance. But it does not necessarily mean that true WOT output is improved; only if you dont get knock retard!quiksilverz71 said:Took mine out over a year ago and no problems, it felt like it had alittle more throttle response.
Its not gonna hurt anything. But do some logging and I guarantee your running lean. That MAF is calibrated for a certain GM/sec across the filaments. You take the screen out of it you change its flow characteristics. Unless you are gonna tune to accomodate the altered MAF, your LTrms and 02 millivolts will be off. Might even get a little KR. If you had AutoTap and did some logging. Then you looked at say LTrms. - LTrms means your running rich. + LTrms means your running lean. So it might be +10 on your LTFT's. Then to get it back down you scale the MAF table by a value of 110 (increases the table values by 10%), which will decrease LTFT's approximately -10%. It may take a couple tries. 95 (95% multiplier decreases table values by 5%), which would raise LTFT's approximately +5%. You want LTrms to be zero at WOT. To some this doesnt seem like much to worry about. But when it comes to getting a good tune, LTrms are somewhat important.Z71bigchevy said:Yea dont worry about everything getting screwed up by it. I have had it done to my truck for over 18 months an have never had a problem. So go for it.
Have you logged to see if your getting any KR? Aftermarket MAF's are calibrated for the absence of the screen. The stocker isnt.DUBrado said:no downside to pulling the screen out unless you have no filter and something gets sucked in and hits those wires
Look at aftermarket MAFs, they dont have screens for a reason, more air = good
I've been running w/o one ever since I got this truck, over 2 years ago, no codes, no negative side effect