Recently the car has begin to bog while driving ( feels like fuel flow dramatically cut). I changed fuel filter, no change in outcome. There does seem to be a leak somewhere in the radiator, im finding myself needing to add coolant consistently. What do you suppose cuold be causing the car to bog, or detonate. ( it may happen once in a day )
Any opinion is appreciated ! thanx
( ps it is a jdm itr motor, 11:1 compr )

 

Have you done all the proper tune ups? Plugs, plug wires, dist cap, cleaned your filter etc.

About the coolant leak: Do you have any white smoke from the exhaust or have any oil in your radiator? Also, find out where that leak is coming from.