1g mafs in gvr4? help asap

[justin90gsx]

ok a buddy has a stock gvr4 and it blowing a bit of black smoke under boost,
so its running rich and it has a 1g ecu in it and the stock gvr4 mafs,
is that why its running rich?
does it need the 1g mafs to compensate since it has the 1g ecu?
the boost leak test is good, timing (both) plugs everything is good

 

[viprez586]

Probably normal. 1Gs run as rich as 9.5ish to 1 AFR from the factory.

 

[justin90gsx]

better rich than lean!
would the 1g mafs help it tho?

 

[toofast82]

The mafs themselves are the same except for the fact that the gvr4 maf has the lower screen out from factory
It also uses a slightly different maf compensation map in the ecu, its so close that it shouldn't be noticeable though. The ecu should be able to compensate the fuel trims for it no problem

 

[justin90gsx]

awesome! got what i needed to know! thanks guys

oh one last thing, is the wiring the same to where the 1g and gvr4 mafs's are interchangeable?

 

[toofast82]

awesome! got what i needed to know! thanks guys

oh one last thing, is the wiring the same to where the 1g and gvr4 mafs's are interchangeable?

Yep same plug