[g35ctuner]

after all the rave's on spacers i decided to go with the md 1/2 iso thermal spacer. the install was very simple, and easy to do. i followed the directions except i opted for blue loctite instead of the red that was provided by md. in my eyes the red is a bit excessive especially since i do plan on taking the upper plenum off for future mods. i was surprised to find that there was no oil puddling in the plenum like other members have stated they found when doing their install. the two highligts from this mod are that using a torque wrench and strictly follwing the torque procedure is crucial to avoiding intake leaks and ensuring leaks wont develop in the future. the second is that i reccomend you do an ecu reset prior to running the new mod. i didnt recent the ecu thinking the computer would adapt right away. it didnt. the car ran some what sluggish and felt like i lost power. then i reset the ecu and within 5 miles of driving i could tell my origional power was back and then some... pulls real hard from 3k to redline. i may have lost power from 1k-3k but to me the car gets up and goes pretty quick just needed some more up top.and the md 1/2 delivered. prior to the install i was skeptical about the heat reduction with the use of the iso-gasket. the o.e. gasket is a m.l.s type gasket and it basically transmits 100% of the heat from the heads and lower plenum. the iso- gasket is a thick paper type gasket that definatley will reduce the heat soak. how much is anyone's guess but i guarantee that it does block some heat vs. the o.e. gasket. i see why this mod is a favorite amog the vq owners i reccomend it as well very satisfied and my c/f 350z engine cover still fits!
bone stock:

upper removed:



lower removed:


spacer installed: