2005 rs help - Subaru Impreza GC8 & RS Forum & Community: RS25.com

ebeichnerwrx · 07-03-2010, 11:06 AM

i was wondering how much would a performance chip help my 2005 impreza rs or would it not do anything really?

chazly413 · 07-04-2010, 02:58 PM

Won't do anything. Stock tune is way too aggressive already (i.e. not even 93 octane could take advantage of all the timing the engine could possibly run). You can, however, modify a few things for changes in driveability, such as throttle mapping, but that's about it. Nothing to squeeze out of the stock tune.

BLACK 05 RS · 07-04-2010, 05:24 PM

First off, chipping is not really the way to tune a new age subaru. You can reflash (reprogram) the ecu with opensource software or an accessport. Now there is not much more top end power you can extract from the rs, but you can change the response of the engine. Granted you will need to know how to tune and have all of the needed tuning tools, such as a wide band oxygen sensor, and datalogging equipment (new accessport or a tactrix cable). One thing about the stock tune on the rs, they target 14.7 to 1 afr damn near to readline, which is good for fuel economy, but terrible for knock control and power output. So you can surely obtain more low end torque from this engine, in sacrifice of fuel economy if you add more fuel in low rpm/ high load situations.

07-03-2010, 11:06 AM	#1 (permalink)
ebeichnerwrx 1.8L Car: black 2005 subaru impreza rs Fav Mod: yellow underglow My: Subaru Parts for sale Join Date: Sep 2009 Location: Venus, PA Trader Rating: (0) Posts: 5	2005 rs help i was wondering how much would a performance chip help my 2005 impreza rs or would it not do anything really?

07-04-2010, 02:58 PM	#2 (permalink)
chazly413 2.7L Car: 2005 RS RBP Fav Mod: 20mm Rear Sway Bar! My: Subaru Parts for sale Join Date: Apr 2007 Location: Ellicott City, MD Trader Rating: (0) Posts: 413	Won't do anything. Stock tune is way too aggressive already (i.e. not even 93 octane could take advantage of all the timing the engine could possibly run). You can, however, modify a few things for changes in driveability, such as throttle mapping, but that's about it. Nothing to squeeze out of the stock tune. __________________ http://www.learnyourdamnhomophones.com/ lul wuts a homofone

07-04-2010, 05:24 PM	#3 (permalink)
BLACK 05 RS 2.0L Turbo Car: 05 rs 04 wrx 05 sti all black Fav Mod: open ecu is my friend My: Subaru Parts for sale Join Date: May 2005 Location: Olympic mountains, Wa Trader Rating: (0) Posts: 1,901	First off, chipping is not really the way to tune a new age subaru. You can reflash (reprogram) the ecu with opensource software or an accessport. Now there is not much more top end power you can extract from the rs, but you can change the response of the engine. Granted you will need to know how to tune and have all of the needed tuning tools, such as a wide band oxygen sensor, and datalogging equipment (new accessport or a tactrix cable). One thing about the stock tune on the rs, they target 14.7 to 1 afr damn near to readline, which is good for fuel economy, but terrible for knock control and power output. So you can surely obtain more low end torque from this engine, in sacrifice of fuel economy if you add more fuel in low rpm/ high load situations. __________________ you have to be crazy sometimes to know what normal is

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)