I put new wires, sparkplugs, distributor, fuel filter, air filter in my 1988 xj6.

Its still not as fast as i want, what aftermarket parts can i install to get a little more juice from my 3.6 inline 6 cyl engine?

Would a cold aur intake mess with the the cars intrikate sensors?

 

In my experience the best way to go if you want it reliable and faster is go ls1/LSX I honestly think it will be cheaper in the long run. And they fit great in the engine bay.

I have found it usually goes like this

Fast cheap reliable ... Pick two
Good luck