View Full Version : Need more horsepower! 93 Impreza 1.8L

10-07-2009, 06:23 PM
I have a 93 Impreza with the base 1.8L engine.
I thought it had something wrong with it, but the service mgr at the dealership said that they were just weak back then.
Does anyone know of a way to boost the horsepower without putting a ton of money into it?


12-01-2009, 12:03 AM
on the 1.8 your pretty much stuck. I would however start with basics. Have the fuel injectors cleaned, new air cleaner or adapt cold air intake, depending on local laws a less restrictive exhaust would be worth a few hp. Of course judging by the age of your car it could just need a much needed freshing up. We have machined some 1.8 heads using our Newen Contour BB seat machine putting a "raised" seat in it and gained some real world cfm on the flowbench and hp on the dyno. Hope this helps you get started in the right direction. Feel free to call us for any other questions.