Port/De-Screen Stock MAF?
Just to clarify, I have an M6 car, so none of the A4 horror stories I hear. But is it worth it? I plan on getting a tune eventually, but after a few more mods (current mods in sig). Heard both sides of this story, and for now I'm thinking just to de-screen it. But with my mods and a stock tune, is porting it a bad idea?
I would like to see back to back dyno pulls or 1/4 mile runs with and without a screen in a MAF. I bet the difference is negligible, and if there is a gain, its likely from inaccurate airflow.
I used to pop people's screens out at the track for them. I have seen it pick them up to. 2 in the qtr. It works in cars other than fbodys to.
I've seen posted many times that the stock LS1 MAF (with screen) is good for 450~500 HP. Personally, I'd want to "upgrade" it when approaching that level.
I had removed the screen on my otherwise stock LS1 Firebird-and issues arose. It developed a stumble and hesitation. I went back to a screened MAF and the problems disappeared.
Removing the screen allows the airflow to become turbulent at certain engine speeds and throttle angles. This causes the sensor to report inaccurate measurements to the PCM.
I for one will say to retain the screen.
I'm about to build my new engine complete with a FAST 92 intake manifold. I'll be upgrading to a (somewhat) matching ID MAF tube with a LS7 cartridge style five wire sensor. Saxon screening will be used.
I had removed the screen on my otherwise stock LS1 Firebird-and issues arose. It developed a stumble and hesitation. I went back to a screened MAF and the problems disappeared.
Removing the screen allows the airflow to become turbulent at certain engine speeds and throttle angles. This causes the sensor to report inaccurate measurements to the PCM.
I for one will say to retain the screen.
I'm about to build my new engine complete with a FAST 92 intake manifold. I'll be upgrading to a (somewhat) matching ID MAF tube with a LS7 cartridge style five wire sensor. Saxon screening will be used.
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I didn't notice any difference at all when I descreened my MAF, switched to an SLP 85mm MAF and still made little to no difference LOL. So now I'm going speed density and doing away with it all together...
And if by some miracle it did do that it probably was because it was reporting less airflow and leaned it out and added timing. ^brilliant logic! " it went faster that's all that matters".....I prefer to accurately know what my engine is doing. On a basically stock car does it matter, not much. But on a modified or power adder setup, no way would that be smart. My car is north of 700rwhp and I have a screen and it drives like stock, I attribute much of that to an accurate fuel and airflow model that isn't skewed.
That screen also add's protection from things getting sucked into the motor and causing catastrophic failure.A buddy of mine wish's he would've left his in after a piece of his nitrous kit got sucked into his motor destroying it.The screen would've caught everything.
News flash, just cause a car picked up at the track doesn't mean it was done safely. You do what you want, but I prefer to keep my engines running for a long time and not risk damage which is why my stuffs been together for like 6 years with nothing but plugs and oil changes.