I've been searching all night and I couldn't come up with an answer or a thread that remotely answered my question.

My understanding is that the MREV2 is the lower part and the Crawford Plenum is the upper part and the spacer goes in between... correct?

So I could install all three? Or am I wayyy off base?


Has anyone done this? Dyno charts?

 

I think its possible but you would run extremely lean. Also the crawford plenum usually takes the place of the spacer.

 

So does ANYONE have a MREV2 paired up with a Crawford plenum?

What kind of fuel system are you running? Power gains?

 

that combo will work, the iso thermal absorbs heat in the lower plenum, the crawford is an upper plenum replacement

 

Has anyone done anything similar?

 

I have the Crawford Plenum and the Mrev on my 05 BS Sedan 6mt.I purchased and installed the Crawford before the Mrev was available. It made a noticeable difference in sound and performance.After the Mrev came out I talked to Tony at Motordyne and ordered the lower plenum of the Mrev kit.With the upper and lower Plenum changed it made a huge difference in sound and performance.I am very happy with this set up . I don't know if it is better than the Mrev and the spacer combo.

 

Are you able to use the stock engine cover?

 

So for a 03 Sedan with the 260hp engine, will this mod help it breathe alot better?

I am thinking Stillen CAI, Z-tube, MREV2, MD 5/16" spacer. DO I still need the Crawford Plenum?

Also would doing these mods make it still CARB Legal in CA?

Thanks...

 

Unless all of those mods each have a CARB number no way. BUT from what I heard the MREV and Spacer are viturally un-noticeable. Now if you can still put on the stock engine cover with the MREV and Crawford I don't see how a cop will be able to tell anything has been done to your engine, especially since the z-tube and stillen CAI look pretty much stock. (unless you get a cf or polished z-tube)

 

The only way you can use stock engine cover with the Crawford plenum is to cut the cover...I will keep my stock upper plenum in case I have to change back...It is very easy to do.

 

if you want to be totally stealth go with the 5/16th spacer, mrev2, and the isothermal kit

 

Thanks... that's probably what I'll do, along with the Stillen CAI and Z-tube.

How much hp gain is to be expected with all this installed?

And does anyone have a sound clip of a similar setup?

 

All of that is available with a search. I believe there are a couple of dynos posted with spacer/mrev