MAF O-ring & Pics!!! :D Lol ...

**TheYanz** · 02-09-2012

Hey anyone out there in GTP Land ever discover any issues with that elusive o-ring that sits around the MAF up top right where it drops into the hole on the throttle body? Yup there's definitely an o-ring there. The stock one on mine was black & not that thick. I recently bought a variety pack of those green fuel/ ac o-rings from Advance for $5. I believe there are 24 of them in there in multiples of 4 I think. I needed them for when I went to recently change my fuel filter. After swapping out the filters it kept leaking every single time I would look under to check for leaks after pressurizing the system. I kept thinking it was the quick connect clips not seating right but after talking to a mechanic friend of mine he suggested that the flexible end of the fuel line has an o-ring or 2 inside. Look there he said. Sure enough THAT was the issue. So I carefully pried off the black MAF skinny o-ring & tried 1 of those nice, fatter, green ones from the pack around the MAF. I recently home ported my L67 throttle body. See the pic links at the end for what I've been up to lately

So I've been kinda messin' with & inspecting the throttle body & sensors, wiring, etc. over the last couple days. After slipping it on & putting a tiny dab of Vaseline around it I noticed the MAF sat much more snug in the TB hole. & just earlier I checked for vacuum leaks with TB cleaner. No change in rpms after spraying around various TB spots. But it was on a somewhat colder engine. I took the car for a test spin & it was picking up & taking off like I've never seen it do before. Could something so stupid be the cause for my recent general sluggishness & drivibility problems? & I've checked & tried swapping out literally everything up top with spares from a engine swap in October. I have one of those Scan-Gauge brand things mounted behind the steering wheel. I bought it to monitor KR & all the other engine parameters a while back. It didn't come with the MAF PID programmed in but I was able to find PID info on Wiki & once u understand how all that works u can make it read out pretty much anything u want it to. However I've always been unsure of how to scale the data it reads back. But what I can say is that at idle the g/s displaying how I have it scaled used to read 20-25 & when I first started it up it read 40-50. After a warm-up at the end it came back down but no lower than maybe 30-35. & at the peak of a few good solid runs it climbed all the way up to 1100 or so with no hesitation. Haven't seen the MAF data read that high in QUITE some time. It was screaming down the road & the Boost hasn't felt that good for a long time. The air did seem very crisp & cold & there was a full moon out ;D What do u guys make of all this? The black o-ring allowed the MAF to just simply slide right in & out of that *****ng hole with ease. No snuggness. The fatter, green, lubed up one required a good push from the top to slide in then I was able to rotate it with minor persuausion then tested to see if it pulled out easily. Nope. It sat snug. Wtf? Never have I seen on GP Forums anyone ever mention anything about a MAF o-ring. Btw... I can't get enough of how cool porting the TB was. I love it. Check out the pics

Thread: MAF O-ring & Pics!!! :D Lol ...

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