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p0103


thorne

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I've got a car I'm working on that is tossing this code. I can't seem to nail down whats wrong with it. It always happens at WOT. I spent 2 hours with the car saturday and could no recreate the problem. Then today it pops back up.
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Yeah, its a 2004 WRX 2.0 with an 18g. It has a SPT Intake and fmic sti pinks (Those are coming off needs bigger) exhaust headers .

 

I've personally cleaned the MAF on more then 1 occasion. I'm going to swap mafs friday and see if the problem follows from his car to mine. Other then when the MAf Flakes out the car pulls like a raped ape.

 

The problem has been happening on and off for a while. The car has been down for a bit because he blew a gasket in his headers and had to have IPS put a Flange in and weld it.

 

IPS did a BL test before the car came out of the shop. I had the car for the weekend a few weeks ago and it seemed like to me the car was reading entirely to much air for its build. I'll try and get some datalogs off the car with the MAf voltage.

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^^^^subaru released a letter to dealers after the intake was released saying that their dyno testing proved a HP loss with the SPT intake installed. LOL

 

 

I can see it. That intake is a smaller diameter then the stock intake (HAHAHA). So the maf sensor reads more air then what is really there. This is going to cause a STOCK car to go rich. Subarus are rich from the factory anyways.

 

Now you can scale the maf for that intake but it will not make it to 300whp. There is only so much you can do. 5v's is 5v's .

 

APS 70mm here we come.

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