Ok. wanted peoples opinion on this one! i have my car pulled apart right now due to a leaking blower oil seal and a spark plug change. i currently am running the M-REV lower plenum with the 5/16 spacer from motordyne. i have never run my vortech setup with the revup lower plenum. i installed the vortech with the M-REV at the same time, during my last tune at GTM i made 430 rwhp 390 torque at 6200 rpm. i am wondering if i reinstall the revup lower if this will broaden my power band but with the sacrifice of losing a bit of torque at the wheels. also do you think my boost level will drop due to the larger surface area of the revup plenum ( larger/shorter runners ) which would not be such a bad thing seeing im pushing 14 psi at 6600 rpm right now. What do you think? i can take pics of the plenums so you can visually see the difference.

 

If you dont put that lower back on you fail.

I had the Mrev lower for a dyno session (on a rev up) and we stopped becuase it just sucked with the revup motor.

 

what affect did you have with the revup lower reinstalled? did you make power up to redline?

 

BTW also installing my samco hose kit and koyo rad right now .......

 

+1 on the dyno result with MRev and Revup. I have the Mrev+ on my revup and I'm also contemplating to put back my stock plenum. Should we also remove the Spacer?

 

Keep 03' lower, more TQ and fatter midrange at minimal gains past 6200rpm's.

 

All depends whether you want

1. Broader midrange, more meat under the curve = Mrev2
2. Peak hp increase past 6200 rpms = revup

For turbos with so much midrange torque, I think the revup is probably a better choice to keep the power from falling off. I don't know if anyone has actually quantified the difference. Look for JETPILOT's posts.

 

This was one of my concerns, I meant to bring my RevUp plenum down to PF when I went but completely forgot.

We will see what happens.

 

He probably has a spare sitting around. have him throw it on. you can send him yours when you go to pick it up.

 

Maybe Tony could answer this...

 

i went back to my stock revup plenum and sold my mrev2. there is no need for any extra torque in the midrange with a turbo setup.........all these turbo kits spool up quickly and have fat torque curves already.

 

Would be nice Otherwise I'm stealing someones cosworth.

 

I have the reup lower and make peak power @ 6800RPM on my non rev up motor! Got to love that. I am TT so I have an abundance of tourque.

JET

 

Yes exactly! but with the vortech kit we all know it needs all the tourqe gains we can muster up. that is why i think i am leaning towards keeping my MREV2 on, unless someone can change my mind with proven documentaion on gains with the revup lower.

 

I peaked at 7000rpm's on a DJ, does that cancel your results?

 

No beacuse we could have gone to 12,000RPM but decided not to.

JET

 

 

isnt the point of changing cogs on the revup vortech kit to get more usable power in the midrange? Why would you then want to get rid of some of that midrange power? If you have a free flowing exhaust you should make good power up top anyways. When I drive I spend most of my time in the mid to upper mid rpms, and that is where I want a lot of my power to be.

Just my .02.

 

JET MECH,

On a vortech car, I would probably keep the mrev2. having that extra 20-30 ft-lbs in the midrange would be nice.

 

Yes you are right. i have elected to keep it on. thanks for the insight guys!