All i know is you can't judge a book by it's cover, if i had the money to do a dyno i would... i have a 90 lude SI with origional motor, it was owned by a mechanic, and geared for exceleration (i don't know what he did,but i would do it to any car i own. It hauls nuts... NUTS! all my friends in their integra's all riced out, eat my blueish grey smoke. i have beaten V6 mustangs and kept up with the GT's until 3rd gear... MY old ass car throws you back in your seat and you would never suspect it it has 221,942 miles on it.... prelude's are the greatest 4 bangers out there