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2.5 dohc more power?
Posted 12 January 2013 - 12:35 PM
also its an auto:-\ would like to 5 speed swap it though
Posted 12 January 2013 - 02:49 PM
Posted 12 January 2013 - 03:03 PM
Posted 12 January 2013 - 03:55 PM
couple things to note:
-if engine is being fully rebuilt anyway, minor improvements can be made with mild porting around areas of the cyl heads before they finish getting rebuilt w/ valves installed. You just gotta search for the right pics/tips for porting those DOHC cyl heads..
-exhaust improvements can be great, but I wouldn't do a cat-back and overlook the front, I would definitely try to re-design/finish the best cyl head-back exhaust completely. Exhaust exits from two round ports next to each other on each head, consider some long-tube (hopefully equal length) headers
Posted 12 January 2013 - 11:24 PM
Posted 12 January 2013 - 11:39 PM
Posted 13 January 2013 - 06:11 PM
Another is OBX Equal Length headers. I'm running 28 inch tires under my Outback and it has more power know than before I lifted it and put the bigger tires. Wish I had done it before the lift so I could have played in the corners beforehand.
Grimmspeed made intake manifold spacers to keep the intake cooler and they also offer a thermal coating (I don't have yet). Group A did a throttle body spacer but are no longer produced but someone else might be.
You can get a cold air intake off e-bay for an Imprza RS and cut it down to fit also.
Other than that you are looking at cams from Delta and some port and light polishing work. IF I remember right, Delta can redo your heads and improved cams and porting all for a great price and all you have to do is re-bolt the heads on, no cam lash adjusting or any of that stuff.
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