I have a T+ and lt1 maf currently, I've heard the Ls1 maf offers a considerable gain over the lt1, at least in heavily modded cars like mine. What else is needed to swap the sensors besides the hose adaptors? Can I still use a stock intake hose with it? Solid mass air pipes never fit my car, so I use the stocker. Is the plug on either sensor the same? And who has the best deal on the Ls1 sensor? Thanks for the help. Oh, and will the swap still be effective, even though the hose and turbo inlet are only 3"?
Ls1 maf, T+ question
- Thread starter turbosam6
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First off things vary by application.
Personally, I went a several steps, better, in my opinion. If you're running 3" piping on both sides of it you're still facing some restriction.
What I did was relocate the MAF to the uppipe, at the GNTtype tech area is an article about it.
With the MAF now a blow thru it is much less restrictive. As a draw thru for every 1% restriction in ducting will cost you 2% in HP. Relocating the MAF then makes using a 4" MAF pipe easy, and then you can stuff lots of air filter in there.
Currently, I've put the guts of a LS1 MAF in the LT1 housing and cut the vane out.
The LS1/LT1 MAFs use the same connector.
I think Ramchargers has 4" ends for the LS1 MAFs.
Personally, I went a several steps, better, in my opinion. If you're running 3" piping on both sides of it you're still facing some restriction.
What I did was relocate the MAF to the uppipe, at the GNTtype tech area is an article about it.
With the MAF now a blow thru it is much less restrictive. As a draw thru for every 1% restriction in ducting will cost you 2% in HP. Relocating the MAF then makes using a 4" MAF pipe easy, and then you can stuff lots of air filter in there.
Currently, I've put the guts of a LS1 MAF in the LT1 housing and cut the vane out.
The LS1/LT1 MAFs use the same connector.
I think Ramchargers has 4" ends for the LS1 MAFs.
http://www.gnttype.org/techarea/engine/mafrelocate.html
Part III really shows what a low restriction Intake involves.
Hmm, I just realised I better chase up some pics of the NEW Stuff.
Thanks Bruce, thats pretty interesting. I might try that down the road, but for now I am mainly concerned with a "stock" style setup. Anyone else have any experience? I think TurboDave had posted something about this earlier. Also, best deal? Thanks again!
hmm, doesn't look too hard to do, i have a 3'' MAF and a T+ hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm 
now for alky users(i'm not one of them yet) i assume you'd had to put the nozzle AFTER the MAF right? wouldn't be good to spray the alky through the MAF right?
now for alky users(i'm not one of them yet) i assume you'd had to put the nozzle AFTER the MAF right? wouldn't be good to spray the alky through the MAF right?
The connectors are the same so that's a non issue. I use 3" plumbing in both ends of my 3.5" LS1 MAF, I just use the rubber sewer pipe adapters that can be had at most Home Depot type stores. If you click on the photo link in my sig, and select the Grand National photo album you can see in there that I have a picture of my stock maf instal, my LT1 3" install, and near the bottom is the photo of my LS1 3.5" install, and you can see those rubber adapters I use to fit the bigger maf to the 3" plumbing.
I doubt you'll be able to use the stock hose with the LS1, can't imagine how to adapt it.
I found the upgrade from LT1 to LS1 to yield very nice results. Quicker spool, better throttle response, quicker 1/4 ET and MPH.
Thanks Dave. I only have one problem, thats I can't find a maf pipe that fits my car. They all hit the alternator real bad. Tried lots of brands, anyone have a suggestion? I see lots of cars with these, but I can't get one to fit. Weird. Maybe my turbo is "clocked" funny? I could probably find a coupler to use to connect the stock hose to the ls1. Thanks again.
You got something really strange going on there, because there's no reason any of those pipes shouldn't fit. Alternator not where it belongs? Putting the pipes on backwards? etc.
No way to know without looking.
I went thru the same thing, none of the pipes really fit right.
If you look at Phase III on th relocated MAF article, I split and used tubing to reorient all the pieces to get the pipe to lay where I wanted it. Relocating the MAF just made it all easier.
If you think about the advantages of blowing thur the MAF rather then drawing thur it you'd see there is a difference.
Thanks guys. I put an ls1 sensor on today, used a cold air kit from a honda, $40, works pretty good. Dave, I think you misunderstood what I meant by "turbo clocking". I meant how the turbo sits on the header, maybe I can loosen the bolts and turn it slightly.
Bruce, thats a cool setup, but I don't understand how moving the maf would be any different. Cfm is cfm, the air in the up-pipe came from the intake hose, I don't see any way there is any difference between the two locations. Maybe I'm wrong. I do duct sizing at work, and aside from a pressure difference, the cfm on the inlet and outlet side of the fan is the same. You can only put out what you pull in, right? All I'm saying is if you have "x" amount of cfm in the up-pipe, that cfm would still be present at the stock maf location. What measurable benefits did you see? Interesting info, nice work, too. Its good we have guys like you doing experiments to show the rest of us what works.
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Mark Hueffman - Owner
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Did you ever try one of my MAF pipes? I also have them in 3.5" diameter also.
