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JET02WRX · 07-14-2008, 07:10 AM

I was reading a recent issue of Subiesport and they stuck a rotated Perrin kit in one the project cars... I think it was their Legacy GT. Anyway... they were having an idling / stalling issue with the car after the installation of the turbo. They diagnosed, along with Jeff Perrin, that the size of the turbo was drawing more air across the MAF at idle than was expected. Ok, i can see that. Their solution?... move the maf further away from the turbo. Now, while i realize that is a solution, it still makes for a guessing and trial and error game. Since tweaking is going to be necessary either way, wouldn't the more "professional" approach be to tune the maf table in the low end? Isn't the placement of the maf in their rotated kit somewhat standard?
I know tweaking the maf is tricky...i'm still having issues with mine, but i'm just surprised by the response from Jeff Perrin to just 'move the maf'.
Looking for thoughts / education from some of TSTs DIY tuners and or some of our pros... Ray, Andy, R/T? 1320?

07-14-2008, 07:10 AM	#1
JET02WRX Tri-State Addict Join Date: Jun 2006 Location: Chester Co. Member #2133 My Ride: 2002 WRX Wagon iTrader: (1)	Subaru tuning guru's, pros, newbs...a question. I was reading a recent issue of Subiesport and they stuck a rotated Perrin kit in one the project cars... I think it was their Legacy GT. Anyway... they were having an idling / stalling issue with the car after the installation of the turbo. They diagnosed, along with Jeff Perrin, that the size of the turbo was drawing more air across the MAF at idle than was expected. Ok, i can see that. Their solution?... move the maf further away from the turbo. Now, while i realize that is a solution, it still makes for a guessing and trial and error game. Since tweaking is going to be necessary either way, wouldn't the more "professional" approach be to tune the maf table in the low end? Isn't the placement of the maf in their rotated kit somewhat standard? I know tweaking the maf is tricky...i'm still having issues with mine, but i'm just surprised by the response from Jeff Perrin to just 'move the maf'. Looking for thoughts / education from some of TSTs DIY tuners and or some of our pros... Ray, Andy, R/T? 1320? __________________ 2002 WRX "Fun-Wagon" Last edited by JET02WRX; 07-14-2008 at 12:01 PM.