I've been taking an interest lately in going with the MREV2 and 5/16" spacer for my REVUP Z, and have been browsing many threads. The dynos speak for themselves, but I wanted to see if anyone has had any longer term mileage on this mod, and as far and daily usage or reliability issues. My Z is a year-round daily driver so i want to make sure I wont have any issues down the road with this. I dont plan on doing any tuning, so also i hope this wont throw my AFR's way out of whack. Thanks.

 

I've had mine for over a year. No problems.

 

It won't affect the reliability of your car and no it won't toss your AF "wack"

 

couldn't really be more reliable. worst thing that could happen is a screw gets loose, check them after 30k miles if you are worried.

 

....exactly. There is nothing to go wrong - no moving parts - all the parts do is create more space for air that the engine can call upon

 

i've had mine for almost a yr now and no problems so far.

 

I just installed this on my car and you can feel the difference right away. Motor has a nice growl. Be sure to use lockite on the bolts though.

 

Another question... I've noticed some posts about possible issues with this and cold weather. Any winter Z drivers with this can comment?

 

i'm going on 2 years with my mrev2 and 5/16" spacer on my revup G. daily driver (including winters)
never had any problems in the winter. what kind of problems have you heard about this mod and winter?

 

There are no issues with winter.

If you have the regular Iso Thermal version, just be sure to open the coolant control valve when it gets really cold outside.

The purpose of opening the CCV is to keep the throttle body heated so it won't get iced up and frozen to the open position. The throtle body getting frozen open could cause stalling when you let off the gas.

So that is the reason for opening the CCV in cold weather.

In a place like So. Cal., Texas, Florida, Hawaii and similar, freezing is almost non-existant. So you can use the regular Iso Thermal kit. And in the rare occasion when it does get freezing cold, just open the valve.

But if you live in an area where it can get really cold... alot... Colorado, Montana, Chicago, NY, Alaska, Canada, etc. I suggest getting the Copper Iso Thermal version.

The copper costs a little more, but its all automatic and fool proof. Install it and forget it. The upper and lower plenum assembly runs cooler and the throttle body will never freeze up.

 

^^ohhh...that winter issue
op: i'd also recommend the copper iso thermal...works fine in these nj winters

 

I got a cooper, that helps colder and hotter weather.

 

^thanks for clearing that up. I've always wondered the main difference between the kits. Sounds like I should get the copper one when I decide to make the purchase.

 

The unreliable part is the installer. Members have a habit of putting a lot of muscle into tiny bolts and break stuff.

 

+1

 

Thanks for clearing that up. I drive the Z year round (sh!tty cleveland winters) so just wanted to be sure. Looks like im going to go with the MREV2 and copper 5/16 in the coming weeks

 

So if you get the iso copper you don't need the control valve, why is that?

 

i`m looking foreword to receive my 5/16" MD spacer ,and hear that alot (do not over tighten things up) ,,,what dose that mean ?
i use the breakbar to tight things up with Little extra hand Trq ,is that over ? and how can i know when its over but before i break it ?

 

definitely don't need a breaker bar...i would recommend using a inch/lb torque wrench. if you don't have one available, i believe a gloved hand with a nut driver (not rachet or breaker bar) torques it to about 90 in/lbs IIRC.

 

hot coolant is used to keep prevent ice formation on the throttle body on cold days. but by doing so, there is heat transferred to the plenum. with the control valve, you stop the flow of coolant to the TB. so you would have to remember to open it in the winter.
with the copper iso, you get a copper plate with a rubber side to isolate the hot coolant from the plenum. so you always have the coolant running to the throttle body but not transferring heat to the plenum.