Max Boost & HP on Stock WRX Turbo

noob · 12-21-2002, 10:54 AM

So, i know that the stock turbo has a maximum boost of 14-15 psi, pumping about out 227hp.

If one were to keep the same turbo setup, what is the max boost allowable (safe) by use of a boost controller? And the approximate corresponding HP?

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M3sum · 12-21-2002, 02:40 PM

Where did you get this 14-15psi stuff from?

I thought it was 13.5 stock

most people set it at 15.5psi for best results

03WRX83 · 12-21-2002, 04:29 PM

14.5 is stock psi i had thought?

scrappydoo · 12-21-2002, 05:13 PM

Everyone is getting different boost. Some people get 13.5, some are getting 15psi. I got spiking to 15.5 and it would settle on 14.8. Most people agree that the stock turbo runs out of steam around 16-17psi. I have my mbc set to 16.5psi. I see less spiking than with my fbc. Do a search and you'll see that some people think it's bad to run anything higher than15-15.5psi. Read their posts, then learn how to read your boost guage to find out what is dangerous and what's not, then decide if you want to go run higher boost.
Good Luck,
Marcel

gjhsu · 12-21-2002, 06:19 PM

It really depends on your location. People at sea level can see higher boosts. I have seen upwards of 14.7 psi (.1MPa) on cold, dry days, and I'm at 300ft, I think (whatever Dallas is). Naturally, people in higher elevations can't see as high a number, so your mileage may vary when it comes to boost.

12-21-2002, 10:54 AM	#1
noob Scooby Newbie Member#: 26030 Join Date: Oct 2002 Location: Toronto Vehicle: 2003 WRX Sedan Silver	Max Boost & HP on Stock WRX Tubro So, i know that the stock turbo has a maximum boost of 14-15 psi, pumping about out 227hp. If one were to keep the same turbo setup, what is the max boost allowable (safe) by use of a boost controller? And the approximate corresponding HP? * Registered users of the site do not see these ads.

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12-21-2002, 02:40 PM	#2
M3sum Scooby Specialist Member#: 18226 Join Date: Apr 2002 Location: Bellevue, WA Vehicle: 2001 M3 Laguna Seca Blue	Where did you get this 14-15psi stuff from? I thought it was 13.5 stock most people set it at 15.5psi for best results

12-21-2002, 04:29 PM	#3
03WRX83 Scooby Specialist Member#: 30246 Join Date: Nov 2002 Vehicle: 0394 WRX/Supra WRB/White	14.5 is stock psi i had thought?

12-21-2002, 05:13 PM	#4
scrappydoo Scooby Specialist Member#: 23630 Join Date: Aug 2002 Chapter/Region: NWIC Vehicle: 97 v4 STi RA Feather White, 17 FoST	Everyone is getting different boost. Some people get 13.5, some are getting 15psi. I got spiking to 15.5 and it would settle on 14.8. Most people agree that the stock turbo runs out of steam around 16-17psi. I have my mbc set to 16.5psi. I see less spiking than with my fbc. Do a search and you'll see that some people think it's bad to run anything higher than15-15.5psi. Read their posts, then learn how to read your boost guage to find out what is dangerous and what's not, then decide if you want to go run higher boost. Good Luck, Marcel

12-21-2002, 06:19 PM	#5
gjhsu Scooby Guru Member#: 12329 Join Date: Nov 2001 Chapter/Region: TXIC Location: Austin, TX Vehicle: 2o15 WRX Ice Silver	It really depends on your location. People at sea level can see higher boosts. I have seen upwards of 14.7 psi (.1MPa) on cold, dry days, and I'm at 300ft, I think (whatever Dallas is). Naturally, people in higher elevations can't see as high a number, so your mileage may vary when it comes to boost.