paging ATI users w/ a relocated MAF
Thread Starter
TECH Resident
iTrader: (3)
Joined: Nov 2001
Posts: 979
Likes: 0
From: Richmond, VA Where fast cars, well......are hard to come by.
paging ATI users w/ a relocated MAF Well I'm tired of this surging crap from that pcv line (and it's messing my ltrims up) <img border="0" alt="[Banging Head]" title="" src="graemlins/gr_banghead.gif" /> , so I want to relocate the maf as some of you have. I want to know what stuff you needed to hook everything up. I've just ordered the maf wire extension from ramchargers. Is the accordian tube the right size to stick the maf in it? And is the filter outlet the same size as the maf so you can just use a little piece of tube (3"?)? Fianlly, what size tube do you need for the intake box-tb? TIA
<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
<img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Adkoonerstrator
iTrader: (4)
Joined: Nov 2001
Posts: 21,420
Likes: 0
From: Deep in the seedy underworld of Koonerville
Re: paging ATI users w/ a relocated MAF Here are some pics that I took a while back after I relocated the MAF on my '01 SS ATI setup.
I hear the T/A's have alot more room for the relocation. It was kinda tight on my Camaro but, it did work. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Shows relocated MAF
MAF
Shows the Granatelli MAF I used to take the space of the relocated MAF. Hey, they're good for something. <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Top of Engine
The pics are both over a meg. I wanted to keep them clear so they are original size which is BIG. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
John
<small>[ December 16, 2002, 04:03 PM: Message edited by: XLR8NSS ]</small>
I hear the T/A's have alot more room for the relocation. It was kinda tight on my Camaro but, it did work. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Shows relocated MAF
MAF
Shows the Granatelli MAF I used to take the space of the relocated MAF. Hey, they're good for something. <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Top of Engine
The pics are both over a meg. I wanted to keep them clear so they are original size which is BIG. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
John
<small>[ December 16, 2002, 04:03 PM: Message edited by: XLR8NSS ]</small>
Re: paging ATI users w/ a relocated MAF i don't think the surging is caused by the pcv, neither the messed up ltrims. i say this cause i don't have a pcv setup and i have your exact problem.
though i'm happy to report that for some odd reason relocating your MAF will definatly cure your tip in hesetation and surging!! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
i don't know about your kit, but my ATI kit came with an extra powder coated tube ( about the same length as the maf) that i never used. i just installed that tube inplace of the maf sensor and relocated the maf sensor to right before the filter and before the accordian tube. the cool thing is that they all fit and you could use the supplied clamps to hold everything in. you might need an extra clamp to hold the filter to the maf.
just make sure your bov is connected to the stock location and that it's not venting into the atmosphere.
though i'm happy to report that for some odd reason relocating your MAF will definatly cure your tip in hesetation and surging!! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
i don't know about your kit, but my ATI kit came with an extra powder coated tube ( about the same length as the maf) that i never used. i just installed that tube inplace of the maf sensor and relocated the maf sensor to right before the filter and before the accordian tube. the cool thing is that they all fit and you could use the supplied clamps to hold everything in. you might need an extra clamp to hold the filter to the maf.
just make sure your bov is connected to the stock location and that it's not venting into the atmosphere.
Thread Starter
TECH Resident
iTrader: (3)
Joined: Nov 2001
Posts: 979
Likes: 0
From: Richmond, VA Where fast cars, well......are hard to come by.
Re: paging ATI users w/ a relocated MAF Thanks for the pics John. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> Great idea putting the maf in the middle of the accordian tube. Makes it easier to get to, and is the same size on both ends. As soon as the wire extension gets here I'm gonna try it out. I haven't ever used a granatelli maf before, but know people who have, and from what I've heard, that's about how good they are. <img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" />
1dirtyz: I also don't think it just the pcv causing some of my troubles. However, I'm still trying to figure out what else is doing it. Getting this part fixed with the maf will get rid of one possibility. I'll have to see if I had an extra piece of pipe, seem to remember that I do, but I gotta check.
Thanks guys.
1dirtyz: I also don't think it just the pcv causing some of my troubles. However, I'm still trying to figure out what else is doing it. Getting this part fixed with the maf will get rid of one possibility. I'll have to see if I had an extra piece of pipe, seem to remember that I do, but I gotta check.
Thanks guys.
Re: paging ATI users w/ a relocated MAF this is the part i get confused about.
if i had the pcv system hooked up and the maf in the stock location ( ATI KIT) the pcv would flow into the manifold after the maf, so it makes it unmetered. now if you relocate the maf to before the blower then it's still the same, the pcv still flows into the manifold after the maf.
now if you're talking about the breather hose that goes from the passenger valve cover to the inlet hat of the blower, then it should be metered air , cause the air coming from the hose flows through the blower then the maf. now if you relocate the maf , then it won't meter that air cause the maf would be before the inlet hat.
am i missing something here??? <img border="0" alt="[Banging Head]" title="" src="graemlins/gr_banghead.gif" />
if i had the pcv system hooked up and the maf in the stock location ( ATI KIT) the pcv would flow into the manifold after the maf, so it makes it unmetered. now if you relocate the maf to before the blower then it's still the same, the pcv still flows into the manifold after the maf.
now if you're talking about the breather hose that goes from the passenger valve cover to the inlet hat of the blower, then it should be metered air , cause the air coming from the hose flows through the blower then the maf. now if you relocate the maf , then it won't meter that air cause the maf would be before the inlet hat.
am i missing something here??? <img border="0" alt="[Banging Head]" title="" src="graemlins/gr_banghead.gif" />
Moderator
Joined: Nov 2001
Posts: 3,048
Likes: 12
From: Raleigh, NC
Re: paging ATI users w/ a relocated MAF I just talked to a techie at ATI and they confirm what JAS is saying makes sense. He said they tested this setup for use on basically stock LS1's and did not anticipate adapting it for the power levels we who are maxing out the MAF are getting.
They saw no adverse results from this setup on the power levels they anticipated supporting.
He said on some of their LT1 setups they DO have the MAF and PCV setup where the metering is not affected as such.
He said a tuner making this argument had sound reasoning on the face of it, and if the tuner recommended the alternate location for the MAF in our situation, the tuner sounds credible and he sees no reason not to follow the tuner's advice.
JAS apperas to be on to something. <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" />
They saw no adverse results from this setup on the power levels they anticipated supporting.
He said on some of their LT1 setups they DO have the MAF and PCV setup where the metering is not affected as such.
He said a tuner making this argument had sound reasoning on the face of it, and if the tuner recommended the alternate location for the MAF in our situation, the tuner sounds credible and he sees no reason not to follow the tuner's advice.
JAS apperas to be on to something. <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" />
Adkoonerstrator
iTrader: (4)
Joined: Nov 2001
Posts: 21,420
Likes: 0
From: Deep in the seedy underworld of Koonerville
Re: paging ATI users w/ a relocated MAF Azzhauler - Just be forewarned, getting the ends of the accordian tube over the MAF is a pain in the *****.
Accordian tube---> <img src="http://64.127.132.31/smilies/nutkick.gif" alt=" - " /><---Me
It's possible though with a few choice words and a pair of tin snips. <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
<img border="0" alt="[worship]" title="" src="graemlins/gr_hail.gif" /> JAS <img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
John
<small>[ March 19, 2003, 01:14 PM: Message edited by: XLR8NSS ]</small>
Accordian tube---> <img src="http://64.127.132.31/smilies/nutkick.gif" alt=" - " /><---Me
It's possible though with a few choice words and a pair of tin snips. <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
<img border="0" alt="[worship]" title="" src="graemlins/gr_hail.gif" /> JAS <img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
John
<small>[ March 19, 2003, 01:14 PM: Message edited by: XLR8NSS ]</small>
Trending Topics
Re: paging ATI users w/ a relocated MAF well i did the relocation , and i have to agree , a choise of words was applied to ease the accordion tube onto the maf.
now i have another problem, the car drives awsom! no surging or funny throttle responce but it dies after wot!
what is causing this?
( i already have a new thread going so feel free to drop in!! <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> )
now i have another problem, the car drives awsom! no surging or funny throttle responce but it dies after wot!
what is causing this?
( i already have a new thread going so feel free to drop in!! <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> )
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Re: paging ATI users w/ a relocated MAF 1dirtyZ if it isn't one thing its another with these cars, I have no advice on your current problem.
But I do have a question for the MAF relocation experts
If after I relocate the MAF pre blower, I could then tap the plenum and run the PCV hose to it, Right?
Its after the MAF so its now metered if I understand the above posts.
I don't want to run the PCV hose in front of the blower. I want to keep the oil out of the intercoolers and headunit all together. I rather it go into the plenum and then the intake.
The tip in hesititation that I am feeling is due to the placement of the MAF in the ATI kit? If so that solved my problem(relocating the MAF). I think I found the surge problem on my car, the PCV valve hose(rear hose pass side) was cracked at its mounting point on the intake manifold, I replaced the hose and put a small clamp on it and so far no surging.
Even when I rev it or stop suddenly after a WOT pass.
This is when the car would surge most.
But who knows with these cars.
J <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
<small>[ December 18, 2002, 03:51 PM: Message edited by: frcefed98 ]</small>
But I do have a question for the MAF relocation experts
If after I relocate the MAF pre blower, I could then tap the plenum and run the PCV hose to it, Right?
Its after the MAF so its now metered if I understand the above posts.
I don't want to run the PCV hose in front of the blower. I want to keep the oil out of the intercoolers and headunit all together. I rather it go into the plenum and then the intake.
The tip in hesititation that I am feeling is due to the placement of the MAF in the ATI kit? If so that solved my problem(relocating the MAF). I think I found the surge problem on my car, the PCV valve hose(rear hose pass side) was cracked at its mounting point on the intake manifold, I replaced the hose and put a small clamp on it and so far no surging.
Even when I rev it or stop suddenly after a WOT pass.
This is when the car would surge most.
But who knows with these cars.
J <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
<small>[ December 18, 2002, 03:51 PM: Message edited by: frcefed98 ]</small>
Thread Starter
TECH Resident
iTrader: (3)
Joined: Nov 2001
Posts: 979
Likes: 0
From: Richmond, VA Where fast cars, well......are hard to come by.
Re: paging ATI users w/ a relocated MAF 1dirtyz, have you been richening it up to cure the higher ltrims from the pcv line? If so, then it's probably too rich. That's how mine is now. It kinda stutters once you hit pe mode? My wire extension got here today, but I gotta work tonight, so maybe tomorrow or friday I can get it done.
Re: paging ATI users w/ a relocated MAF i did tinker around with my ltrims and i know have them at about -5% so i'm happy with it <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
the other thing is guys , i don't have a pcv system ( well i do but it's sitting on a shef in the garage <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> )
the hole on the pass. side of the manifold is used for the hobbs switch ( pressure switch tho turn on the aux. fule pump) and nothing else.
the other thing is guys , i don't have a pcv system ( well i do but it's sitting on a shef in the garage <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> )
the hole on the pass. side of the manifold is used for the hobbs switch ( pressure switch tho turn on the aux. fule pump) and nothing else.
Re: paging ATI users w/ a relocated MAF JAS, ahh now it makes sense. Thanks for clearing that up. Thats all I needed to know. Doesnt FI pressurize the engine too not all that boost turns into combustion. Just wondering/
As for the tip in hesitation will this issue be resolved when I relocate the MAF?
Thanks for the help
J
As for the tip in hesitation will this issue be resolved when I relocate the MAF?
Thanks for the help
J