LS2 MAF split
Thread Starter
Advanced
Joined: Sep 2020
Posts: 93
Likes: 51
From: Upstate NY
LS2 MAF split
Hey, has anyone run into an issue with their LS2 MAF splitting in their boosted applications? I have a LPE TT setup on a built LS7 running about 8lbs. I was out doing some shakedown runs the other night and felt what seemed like a boost hose popping off. Car wouldn’t make boost but I could hear the turbos spooling just off idle and I had horrible idle issues, but no codes, smoke, oil was clear, etc.
after following every vac line i could identify, I finally found a full circumference split in the MAF just after the sensor. It almost looked like it was built in two pieces and not sealed up. I can’t figure out a free way to post pictures here otherwise I would. But has anyone had issues with this MAF under boost?
also, Assuming I’ll need to replace it, is it likely I’ll need to retune, or is it pretty much plig n play between sensors?
thanks all! I was so happy to find that split and not something more serious
after following every vac line i could identify, I finally found a full circumference split in the MAF just after the sensor. It almost looked like it was built in two pieces and not sealed up. I can’t figure out a free way to post pictures here otherwise I would. But has anyone had issues with this MAF under boost?
also, Assuming I’ll need to replace it, is it likely I’ll need to retune, or is it pretty much plig n play between sensors?
thanks all! I was so happy to find that split and not something more serious
Burning Brakes
Joined: Jan 2016
Posts: 906
Likes: 160
Hey, has anyone run into an issue with their LS2 MAF splitting in their boosted applications? I have a LPE TT setup on a built LS7 running about 8lbs. I was out doing some shakedown runs the other night and felt what seemed like a boost hose popping off. Car wouldn’t make boost but I could hear the turbos spooling just off idle and I had horrible idle issues, but no codes, smoke, oil was clear, etc.
after following every vac line i could identify, I finally found a full circumference split in the MAF just after the sensor. It almost looked like it was built in two pieces and not sealed up. I can’t figure out a free way to post pictures here otherwise I would. But has anyone had issues with this MAF under boost?
also, Assuming I’ll need to replace it, is it likely I’ll need to retune, or is it pretty much plig n play between sensors?
thanks all! I was so happy to find that split and not something more serious
after following every vac line i could identify, I finally found a full circumference split in the MAF just after the sensor. It almost looked like it was built in two pieces and not sealed up. I can’t figure out a free way to post pictures here otherwise I would. But has anyone had issues with this MAF under boost?
also, Assuming I’ll need to replace it, is it likely I’ll need to retune, or is it pretty much plig n play between sensors?
thanks all! I was so happy to find that split and not something more serious
Thread Starter
Advanced
Joined: Sep 2020
Posts: 93
Likes: 51
From: Upstate NY
It must be super common, at least with this car. I was taking the old MAF off last night and noticed it had the newer part number compared to what was on the build sheet from the prior owner. Apparently it'll be on it's 3rd MAF (at least) in about 3k miles. I'm thinking the girdle is a good investment here. If it fails again i'll need to look into a good SD tuner in my area.
Thread Starter
Advanced
Joined: Sep 2020
Posts: 93
Likes: 51
From: Upstate NY
Alrighty, update time. I got the new MAF but still waiting on the girdle. There’s apparently a shipping whirlpool near Portland where my package has gone to die.
In the meantime, I figure I’d throw the new MAF on and take advantage of the beautiful weather. I spent 30 minutes (I’m slow and out of practice) swapping out the old unit for the new. I am using the same part number and spoke with LPE who said I would not need to recalibrate. However, after the install, the vac leak seems fixed but the car won’t idle and now it is throwing a CEL. Do I need to reset the ecu or something g, or did I possibly get a bad MAF? I did not disconnect the battery before the swap.
I of course can’t find my scan tool, so I don’t know exactly which CEL, but I’d bet a box of donuts it’s MAF related. Did I miss an easy step along the way?
In the meantime, I figure I’d throw the new MAF on and take advantage of the beautiful weather. I spent 30 minutes (I’m slow and out of practice) swapping out the old unit for the new. I am using the same part number and spoke with LPE who said I would not need to recalibrate. However, after the install, the vac leak seems fixed but the car won’t idle and now it is throwing a CEL. Do I need to reset the ecu or something g, or did I possibly get a bad MAF? I did not disconnect the battery before the swap.
I of course can’t find my scan tool, so I don’t know exactly which CEL, but I’d bet a box of donuts it’s MAF related. Did I miss an easy step along the way?
Burning Brakes
Joined: Jan 2016
Posts: 906
Likes: 160
Alrighty, update time. I got the new MAF but still waiting on the girdle. There’s apparently a shipping whirlpool near Portland where my package has gone to die.
In the meantime, I figure I’d throw the new MAF on and take advantage of the beautiful weather. I spent 30 minutes (I’m slow and out of practice) swapping out the old unit for the new. I am using the same part number and spoke with LPE who said I would not need to recalibrate. However, after the install, the vac leak seems fixed but the car won’t idle and now it is throwing a CEL. Do I need to reset the ecu or something g, or did I possibly get a bad MAF? I did not disconnect the battery before the swap.
I of course can’t find my scan tool, so I don’t know exactly which CEL, but I’d bet a box of donuts it’s MAF related. Did I miss an easy step along the way?
In the meantime, I figure I’d throw the new MAF on and take advantage of the beautiful weather. I spent 30 minutes (I’m slow and out of practice) swapping out the old unit for the new. I am using the same part number and spoke with LPE who said I would not need to recalibrate. However, after the install, the vac leak seems fixed but the car won’t idle and now it is throwing a CEL. Do I need to reset the ecu or something g, or did I possibly get a bad MAF? I did not disconnect the battery before the swap.
I of course can’t find my scan tool, so I don’t know exactly which CEL, but I’d bet a box of donuts it’s MAF related. Did I miss an easy step along the way?
Last edited by HouseS2k; Aug 1, 2021 at 11:00 AM.
Thread Starter
Advanced
Joined: Sep 2020
Posts: 93
Likes: 51
From: Upstate NY
i did reset the ecu this morning, it cleared the CEL, cars idles clean and pulled through first two gears like it should. Hoping to take a prolonged drive tonight, but I think I’m back in business. Thanks all for the advice!
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski