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Resolved 2g MAF on a 1g. conversion?

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90T5I

10+ Year Contributor
107
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Jul 23, 2008
Grants pass, Oregon
what all do u need to do it? is it plug and play? well i would have to wire it up cause the conectors wouldnt fit but what do i need?
 
I tried my injen intake, maf, and filter from my 2g on my 1g a long time ago and the filter was a little long
 
The 2g maf is not plug and play. Some wiring is needed to get it to work on the 1g ecu. If you look around you can find a plug and play harness that adapts the 2g maf to the 1g wiring. Ive seen alot of them on ebay for roughly $15. Make sure you get something to tune with as your going to go a little lean from the added airflow over the 1g maf. If you get a set of 550cc or EVO 8 or 9 stock 560cc injectors theres little tuning needed to get your car running like great. I personally had the EVO injectors and the 2g maf on my 1g and loved it.
 
The 2g maf is not plug and play. Some wiring is needed to get it to work on the 1g ecu. If you look around you can find a plug and play harness that adapts the 2g maf to the 1g wiring. Ive seen alot of them on ebay for roughly $15. Make sure you get something to tune with as your going to go a little lean from the added airflow over the 1g maf. If you get a set of 550cc or EVO 8 or 9 stock 560cc injectors theres little tuning needed to get your car running like great. I personally had the EVO injectors and the 2g maf on my 1g and loved it.

so i WILL have to up my injectors? of can i keep them stock with a little tuning?
 
so i WILL have to up my injectors? of can i keep them stock with a little tuning?

The 2g maf spits out a volume flow reading in hertz at about 20-25% lower than a 1g maf. Your ecu will think there's about that much lass volume airflow and you're run terribly lean. You need the sfc to bring those numbers back in line. Or run larger injectors that are exactly the same size difference as the metering difference.
 
The 2g maf spits out a volume flow reading in hertz at about 20-25% lower than a 1g maf. Your ecu will think there's about that much lass volume airflow and you're run terribly lean. You need the sfc to bring those numbers back in line. Or run larger injectors that are exactly the same size difference as the metering difference.

is there a tuning program i can use like for my laptop to compensate it?
 
Laptop compatible platforms: ecmlink, AEM EMS, megasquirt, tunerpro with chip burner and $250eprom ecu.

Why no just buy a used safc and a basic logger like tunerstein? You can log on your laptop, though you cann't edit on your lap top. You can alter the maf transfer function with the safc however.
 
would a burned keydiver chip work as well? if you tell him you're running a 2g MAF and say 550s?
 
It's not hard to rewire the 1g harness to accept the 2g connector.. I have the wire swaps all written down, but it's in my toolbox..It will make you run lean without tuning such as safc..Listen to theese guys, they know what's goin on.. And yes you do need a different filter to have a nice fit..

I have not tried the 2g maf, since I did an injector and FPR swap. I might do that one of these days just to try it...
If I do try it I will ad it to my on-going thread for all of you to read..
 
I don't mean to change the subject but since we're on the subject of conversions, is it possible to take the crankshaft out of the sixbolt engine and and replace the crank in the seven bolt with it? Specifically the 4g63t. If so, would that not basically make your seven bolt a six bolt?
 
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