LS-1 MAF translator vs ARC-2/ VPC

[Boostn4]

Hey maxboost, when was the last time you have updated your ignition? Plugs wires, check coil-pack. I had a similar problem before with it misfiring and studdering in mid range rpm. I swapped the plugs out and it fixed it right up.

 

[ctnsupra1]

Just bought mine so I don't need to look anymore, here's the links for anyone that's interested:
Number 1

Number 2

Not sure if this one would work or not

Number 4

So, the Numbers 1,2, and 4 def. work and I've checked their numbers with that master list that was posted. Not sure about the third one though but I hope that helps someone out. Take care.

Conor

 

[GSX4LIFE]

Originally posted by eclipse2via
Maxxing the injector has lot of side effects: leaning, knock, pulled timing, fuel cut as starters. If you're feeling a misfire it could be overrun or a misfire I think a logger or at least a egt gauge with peak hold is a necessity when tuning this MAFT.
Scott

Actually, when an injector is "Maxed out", it is because they are at 100% Duty cycle. This means that the injector is open all the time, or "Static". You will actually run super rich at this point. This is because there is no longer a nice spray pattern. It basically dumps fuel in the cyl.

 

[MaxBoost]

Right on. I swapped in some Magnecors for my Accels and no more misfire. Im almost certain I hitting fuel cut even with the defense switch on. Its the brick wall effect at 19 psi.

 

[boost_junky2000]

Got a couple questions. I want to run the 3.5 inch maf into a 3 inch intake and then into the 14b for now. Will it work, with some reducers? Also screens in or screens out?

 

[JayHass]

Originally posted by boost_junky2000
Got a couple questions. I want to run the 3.5 inch maf into a 3 inch intake and then into the 14b for now. Will it work, with some reducers? Also screens in or screens out?

Sure...why wouldn't it? The screens are totally up to you. Some say the factory put them there, leave em there. Others say they do no good except protect the hotwire from schmegma flying into it.

 

[eclipse2via]

Actually, when an injector is "Maxed out", it is because they are at 100% Duty cycle. This means that the injector is open all the time, or "Static". You will actually run super rich at this point. This is because there is no longer a nice spray pattern. It basically dumps fuel in the cyl. [/QUOTE]

So you can be "super" rich at 124% DC?
Believe me, I was running over 100% for quite a while and it's not rich. 660's are the least I would recommend running on this MAFT. My DC's are 81% already and it's still lean on top. The side effect of maxxing out are leaning, knocking, and pulled timing.

 

[MaxBoost]

That's what I was thinking. I know without the MAFT 550's would be optimal with a b16g setup. This MAFT eats alot of air though so I'm gonna try 660's. Hopefully they will work well with a 190lph fuel pump and stock 1G fuel pressures.

 

[DrZiplok]

I've got plenty of headroom left with the MAFT, 550's and a 16g @ 18psi.

Though I'm also running water/methanol with this setup (and it ran like crap the other day when I let the reservoir run dry), so I'm sure that skews things.

 

[Bohrn]

schmegma ??

I call it skank hehe

 

[eclipse2via]

Originally posted by DrZiplok
I've got plenty of headroom left with the MAFT, 550's and a 16g @ 18psi.

Mike, what are your DC's like? Is that on your Alamo? How much boost without the water injection?
Scott

 

[boost_junky2000]

Is anyone running the gm maf with the 14b? Any problems? Do you think i could run 660's with the 14b and 3.5 maf and be able to lean it out enough till i get a bigger turbo. I don't have a fpr, just a 255 pump.

 

[Motohead1]

I am running the MAFT with a 3" mas 550s and a ported 14b. Nothing but good things. In fact at 15lbsi am pulling close to 21ms P/W on the 550s. I need more injector when i upgrade but these are on the threshold of duty cycle now. Also note i have a AFPR and a 255 walbro.

 

[boost_junky2000]

thanks motohead. What are you using to tune? AFC or the translator? I think i might try to get the 660's and then lean it out cause i don't want to by 550's and then have it be almost at the max.

 

[nine5raptor]

you could theoretically use up to 1250's with the 14b and maft. just a *little* overkill imo though

 

[Motohead1]

Originally posted by boost_junky2000
thanks motohead. What are you using to tune? AFC or the translator? I think i might try to get the 660's and then lean it out cause i don't want to by 550's and then have it be almost at the max.

the translator is all you need. with it and a logger you can tune it easly. and yes 660s i would say is a minimum.

 

[boost_junky2000]

Thanks man, yeah i am going to getting a palm anyday now. I am probably going to buy the palm3c and get the digital tuning software. I'll tune with that instead of going with the afc for now. I'll let you know what happens once i get it all in , right now i am just ordering parts and having them shipped to my house. Cause i am in the Air force and in Afghanistan.

 

[GVR-4]

Originally posted by DrZiplok
I've got plenty of headroom left with the MAFT, 550's and a 16g @ 18psi.

Though I'm also running water/methanol with this setup (and it ran like crap the other day when I let the reservoir run dry), so I'm sure that skews things.

How many nozzles are you using and where are they mounted?

dp

 

[GSX4LIFE]

OK, I recieved some of my install parts today. Still waiting on the 2G translator, Mike? I will be using the 3" sensor in a blow through setup. Im having a friend make a 2.5" short route pipe from my FMIC. And I even have a nice polished Tial BOV on the way. I got all my silicone couplers and transitions from RRE. Now, to some of those that said it was impossible to get the the transitions on the sensor, you all need to grow a set! :laugh: Just kidding. Seriously, I did read alot of poeple complaining about it. I had them on in about 2mins. Really, it takes a little finger strength, but not bad at all. Depending on when I get the translator, Mike?, I should have it all installed in the next week or so.

 

[lxlaw]

Well can you get some dyno numbers stock and then some numbers after the translator?? Someone get us some info to feed the brain here. I am just kind of curious how much HP the MAF is adding on certain combos, and i am sure that everyone else is also. Someone has to have some numbers for us.

 

[pilotleston]

Has anybody tested the UICP from Dejontool for a blow through setup? I have just seen it in their web but looks as if the BOV port is very close to the GM sensor. Is it convenient? To be that close? I guess that why should mount the BOV as far from the GM sensor as posible in a blow through setup.

On the other hand, the pipe looks great! : )

 

[pilotleston]

Dejontool UIP

 

[HighPSI TSi Guy]

Originally posted by pilotleston
Dejontool UIP

so how bout a 1G pipe...

 

[Motohead1]

Ok i bumped the boost to 17psi and i am getting what feels and acts like fuel cut? Mike or Bob can answer this. Exactly what RPM does the WOT circuit take over? it feels as if my mid adjustments are not doing do much but i can feel a definet diferance at say around 4500-5000rpm were it just pulls perfect. But at the end of each gear i get fuel cut? I have #3 switch in the on position. Also Mike take note that i have one of the first units and the green led is dimmly lit all the time. i am wondering if i need one of the newer units? all conections are good. and strangly my Inj PW starts off at 20ms at the beginning of each gear and tapers down to about 17MS at the top of each gear. I would think if i am overrunning the injectors it would just run crappy. But this is definetly fuel cut. the only other explanation is a masive boost leak but i have found none. BTW base fuel is at 50psi. I thought it would help but it didnt. Is it posible i need a newer translator? could the dimly lit bug of my unit be causeing it to run on Mas signal alone and not taking in the RPM input at all? also note if i lean the WOT a little i dont get this fuel cut problem witch is strange. I find it very hard to beleive my hogged out 14b is overrunning this 3" MAS. So any ideas?

my mods to note:
14b hogged 3"perty much open exhaust
Rc 550 injectors
255 walbro and AFPR @ 50psi base
3" mas pull threw first batch translator unit.
base 4
idle 3
mid 3
WOT 5 all is well but 12counts knock @17psi
WOT 7 no knock21+ timming but fuel cut and 2500-5000 rpm feels slow and rich

 

[Motohead1]

I should say the green led is dimmly lit at idle not all the time. it does go bright then the red lights up for the WOT circuit like it should. just that the green led is dimmly lit at idle is the only posible problem i see.