With some knowledge of cars and i have a 94 prelude si 4ws with a F23A1/H23A1. i bought the car this way and it was a mess and needed a lot of work. i must have re timed this car 6 times already to where the timing marks are where they are suppose to be (i checked to many times). but when all back together i had to advance the distributor all the way to where it was maxed out and my timing light is still saying im not advanced enough. im guessing around like ten degrees off...i not sure what else could come into play with this. i would be grateful if someone had some insight on this.