i wouldn't waist money on slipons I've had all kinds of exhaust and the best all around exhaust is the kirker 4-1 with the competition baffle sounds the best to
find the relay that controls the the vboost and unplug it . when you turn the key on you here it cycle when it opens up all the way shut the key off then unplug the relay. try it that way and see if you really like what it does and then decide if you want to spend the money
I would check to make sure each float bowl is getting fuel then if the spark plugs haven't been replaced in a while to replace them that's the cheapest way to start. but you said it went to the boost opens up it smooths out , and when the boost opens up your getting two carburetors per...
I would say carburetor problem because at above the boost it runs better because it's getting the carburetor from the other cylinder. probably not getting gas in the carburetor in the cylinder thats not running good
Just wanting to know if all cylinders are universal with different years, have a 93 on the ground was wanting to put the 93 topend on a 90 someone said that you couldn't just wondering