Subaru Enthusiasts Car Club of the Sierras - View Single Post

sperry · 2003-05-19, 08:07 AM

I'd be carefull with anything over stock boost levels until you have engine management. Shoot for 14 psi max boost. Even though that's about the same as stock, you will boost to max in all gears, and it won't back off the boost after peaking the way the stock boost controller does, so it will still be a lot faster.

Also remember that at partial throttle, you will be making a ton of boost w/o the fuel injectors being wide open. Your car can run very lean, and you risk popping her. An EGT gauge would help you to watch for lean conditions. (So would a wide-band A/F gauge but those cost as much as engine managment...)

Up here in Reno, we can get away with the higher boost settings since the altitude reduces the O2 content in the air. I'm not sure what the alt is in Bishop, but I'd guess it's closer to sea level, so be careful! You really should invest in at least a Unichip (they can be had for relatively cheap off NASIOC), or even better a ECUTek or the Cobb equivalent. Also GReddy and HKS and the like make their own fuel/boost managment solutions, but I'm not as familiar with them.

2003-05-19, 08:07 AM	#4
sperry The Doink Real Name: Scott Join Date: Nov 2002 Location: Portland, OR Posts: 20,335 Car: '09 OBXT, '02 WRX, '96 Miata Class: PDX/TT-6 The way out is through	I'd be carefull with anything over stock boost levels until you have engine management. Shoot for 14 psi max boost. Even though that's about the same as stock, you will boost to max in all gears, and it won't back off the boost after peaking the way the stock boost controller does, so it will still be a lot faster. Also remember that at partial throttle, you will be making a ton of boost w/o the fuel injectors being wide open. Your car can run very lean, and you risk popping her. An EGT gauge would help you to watch for lean conditions. (So would a wide-band A/F gauge but those cost as much as engine managment...) Up here in Reno, we can get away with the higher boost settings since the altitude reduces the O2 content in the air. I'm not sure what the alt is in Bishop, but I'd guess it's closer to sea level, so be careful! You really should invest in at least a Unichip (they can be had for relatively cheap off NASIOC), or even better a ECUTek or the Cobb equivalent. Also GReddy and HKS and the like make their own fuel/boost managment solutions, but I'm not as familiar with them. __________________ Is you is, or is you ain't, my con-stit-u-ints?