PRO M Maf Problems

[SHODOGG]

Well I just got a PRO M 80mm MAF for my SHO and it definitely did help the performance QUITE a bit. BUT, now the check engine light keeps coming on so I checked the codes and got the following:
157 MAF Circuit below minimum voltage;
211 PIP Circuit Fault;
542 Fuel Pump secondary circuit failure.
Obviously the 157 is whats causing the check engine light to go on cause the other 2 arent codes that would do that. BUT, what does it mean? Does it mean that I need to send the MAF back to be fixed? I also have no idea what the 211 and 542 mean exactly. Can anyone help?

 

[Deaks2]

542 means something or someone stalled the car.

 

[Mike Kopstain]

Well the 211 will set off a light and that's something you might want to look into.

As for the MAF, it's sending out lower voltage than the computer accepts. I'm not sure if the Pro M Maf's are the ones that you can get the different sample tubes for, but if they are you should be a running a tube for 19lb fuel injectors.

 

[sdpatt]

That 211 will give you a CHECK ENGINE light (must have or it wouldn't be in the EEC memory) and shut the engine off like you switched the ignition key to OFF. That is the crankshaft position sensor (CPS or CKP).

 

[SHODOGG]

aw man. I guess I need a 60k then huh? Ok well one more thing, Mikey doesn't the SHO have 24lb injectors? Cause thats what I had them program the MAF to cause I read on SHOTimes that the stock SHO injectors are 24lb/hr.

 

[Mike Kopstain]

Yes, they are 24.6lb injectors, but for some reason they work better with the 19lb sample tube. I believe the car runs too rich otherwise. I know Tony (Prophet) knows, and I believe Fred Hurder was playing around with it also.