MAFT Gen 2 - Anyone? - Page 13 - 3000GT/Stealth International Message Center

twinturbvr4 · 02-12-2008, 09:21 AM

the GenII uses an adapter cable to connect the MAF to the stock 3S sensor connector. Then you splice the GenII into the ECU, 10 wires I believe.

josevr4 · 02-14-2008, 11:33 AM

How do you combat fuelcut using the GenII? I also have a question regarding the gray and brown wires. Do i hook them up. It runs awesome,but the idle is like a pair of 272s when im stock.

TurboBob · 02-14-2008, 12:00 PM

Quote:

Originally Posted by josevr4

How do you combat fuelcut using the GenII? I also have a question regarding the gray and brown wires. Do i hook them up. It runs awesome,but the idle is like a pair of 272s when im stock.

fuel cut is combatted by running larger injectors,

gray and brown wires are not used if running the stock MAF, if you are running a GM maf, then you need to connect them.

give me the rundown on your setup and we can figure out the idle.

what are your trims reading?

Bob

josevr4 · 02-14-2008, 11:41 PM

I have the Dejon Ypipe with dual intakes and a Synapsis BOV running open. Ima try to solve the vacuum leak between the throttlebody and intake mani. I put my finger over the leak and it doesnt make a difference. Ill see when i hook up the two wires if it goes away. I thought you only hook em up if your going with a MAP sensor. The translator currently reads idle jumping between635 and 765. O.2V reads 0.4-0.6V the maf reads 44hz at idle. i have the idle usertune to +4

TurboBob · 02-15-2008, 06:25 AM

running a blow-thru MAF makes the PCV system into a source for vacuum leaks. This creates lean idle conditions that need to be tuned out.

How are your crankcase breather and pcv lines connected?

TurboBob · 02-15-2008, 06:37 AM

are you getting a CEL?

twinturbvr4 · 02-15-2008, 12:48 PM

Quote:

Originally Posted by TurboBob

running a blow-thru MAF makes the PCV system into a source for vacuum leaks. This creates lean idle conditions that need to be tuned out.

How are your crankcase breather and pcv lines connected?

I'm soon going blow-through, as you could tell, I just changed my PCV valve a few weeks ago, what should I be on the look out for here? I was thinking of just putting breathers where the vent to intake pipes were..

TurboBob · 02-15-2008, 01:16 PM

Quote:

Originally Posted by twinturbvr4

I'm soon going blow-through, as you could tell, I just changed my PCV valve a few weeks ago, what should I be on the look out for here? I was thinking of just putting breathers where the vent to intake pipes were..

that will work. you just need to richen the idle some.

DSM guys and guys with really worn out engines have been known to drill out their PCV valves to increase scavenging of the blow-by. In a blow-thru setup this adds additional 'vacuum leak' flow. So, just use a stock PCV valve to the intake, and a breather for the vent tube.

Bob

David_J · 02-15-2008, 01:43 PM

I drilled out the PCV valve and routed the front and rear bank to catch can with a breather. I closed the line going to the manifold so I wouldn't pull in any unmetered air.

twinturbvr4 · 02-15-2008, 03:17 PM

Quote:

Originally Posted by David_J

I drilled out the PCV valve and routed the front and rear bank to catch can with a breather. I closed the line going to the manifold so I wouldn't pull in any unmetered air.

good results?

02-12-2008, 09:21 AM	#121 (permalink)
twinturbvr4 rippin up lil FWD cars!! Join Date: May 2007 Location: Eastern PA Drives: 93 3000GT VR-4 Trader Rating: (9)	Re: MAFT Gen 2 - Anyone? the GenII uses an adapter cable to connect the MAF to the stock 3S sensor connector. Then you splice the GenII into the ECU, 10 wires I believe. __________________ 16Ts, ATR downpipe with high-flow cat, MBC (in cockpit), Kormex'd, 450cc's, Walbro Pump, MAFT GenII, 3.5" GM MAF Blow-through, HKS SSQV '07, EGR Blockoffs. Coming soon: 560cc injectors

02-14-2008, 11:33 AM	#122 (permalink)
josevr4 ALCHYTHIRSTY IRON HORSE Join Date: Jun 2007 Location: bakersfield cali Drives: like my mother Trader Rating: (4)	Re: MAFT Gen 2 - Anyone? How do you combat fuelcut using the GenII? I also have a question regarding the gray and brown wires. Do i hook them up. It runs awesome,but the idle is like a pair of 272s when im stock. __________________ Dejon dual intakes and Ypipe, Synapse B.O.V., Gen2 Maft w/3.5" sensor(blowthru), RandomTech Cat,3SXdownpipe,Ips singletip exhaust, Maximal solid motormounts,13t's,Gtpro headers(powdercoated) w/precat elims,Supra Fuelpump,550cc's,AEM Fpr,IPS hotwire kit, and Southbend DXD-FE ,Newvolt ignition amp,IK27 plugs,300M output shaft. 289awhp and 298awtq on 10psi @11.3AFRlimited by bad VSS's Next ported heads and all new bushings.

02-14-2008, 11:41 PM	#124 (permalink)
josevr4 ALCHYTHIRSTY IRON HORSE Join Date: Jun 2007 Location: bakersfield cali Drives: like my mother Trader Rating: (4)	Re: MAFT Gen 2 - Anyone? I have the Dejon Ypipe with dual intakes and a Synapsis BOV running open. Ima try to solve the vacuum leak between the throttlebody and intake mani. I put my finger over the leak and it doesnt make a difference. Ill see when i hook up the two wires if it goes away. I thought you only hook em up if your going with a MAP sensor. The translator currently reads idle jumping between635 and 765. O.2V reads 0.4-0.6V the maf reads 44hz at idle. i have the idle usertune to +4

02-15-2008, 06:25 AM	#125 (permalink)
TurboBob Resident mad scientist Join Date: Jan 2003 Location: Near Detroit Drives: 86 GN 91 RT/TT Trader Rating: (13)	Re: MAFT Gen 2 - Anyone? running a blow-thru MAF makes the PCV system into a source for vacuum leaks. This creates lean idle conditions that need to be tuned out. How are your crankcase breather and pcv lines connected?

02-15-2008, 06:37 AM	#126 (permalink)
TurboBob Resident mad scientist Join Date: Jan 2003 Location: Near Detroit Drives: 86 GN 91 RT/TT Trader Rating: (13)	Re: MAFT Gen 2 - Anyone? are you getting a CEL?

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02-15-2008, 01:43 PM	#129 (permalink)
David_J Ex-VPC Headbanger Join Date: Aug 1999 Location: Fuel Tuning Hell Trader Rating: (0)	Re: MAFT Gen 2 - Anyone? I drilled out the PCV valve and routed the front and rear bank to catch can with a breather. I closed the line going to the manifold so I wouldn't pull in any unmetered air.