First, try to find a base Revup engine and drive it... Second you just pass your breakin period and your car will get a little stronger by 5k+ miles. the way I see this is you wont know that the G is faster until you drive a civic you need to find something to compare else you'll just think it's a waste of money... in my experience 1st-2nd is were you really see the difference. Or you can uninstall the Mrev and you'll see how your G will get slower... since you did the install the next time around will be much easier, it took me 3hrs to do mine and I know I can do it again in 45 mins...

 

Fireblade,

Is your G still in its break-in period? I don't know how you drove your car previous to installing the MREV. While in either gears 1 thru 4 . . . Go WOT at 4k+ rpm. Now, tell me you cannot feel the difference.

 

I had the dealer install my mrev+, I dont notice any difference.

 

I wonder if they really did it.

 

I just ordered the spacer and the MREV+ for my nonrevup sedan... Hope it produces gains =P

 

G35_TX, Well I got a box of stuff back that included my old plenum, and if I look at my engine I can see the spacer installed as well as the gold valve thing. The guy that installed it is the Shop Foreman/ASE Master.

 

In that case good. I was wondering if they did it or not. Try and do a ecu reset. Unplug the batt for 2 hours.

MREV is such a noticeable difference that you should have noticed it.

 

Damn, I have been bugging Tony for long to develope sth for the 287/280/260 (they are all the same engine) people. Now, I can't wait to be the first few testers of this MRev++ with my 5/16" spacer, when are you ready Tony!?

 

I was thinking the same thing but didnt want to say it. Seems to be a lot of drive bys on people that make such assertions.

 

That is a plus. I was in the same boat as g35_TX. Sounds liek you might have a decent shop working for you. Call and ask the tech if he/they allowed the ecu to reset like g35_tx mentioned.

 

I reset the ECU myself the other day, I left the battery unplugged overnight.
A dyno is required to ease my mind. I hope to get that soon. Thanks for your replies everyone.

 

question? how does the engine make less noticeable power during break in.. or before 5k miles (as you said) versus after 5k?

tell you what.. I dynoed 242wHP bone stock on a dyno jet at 1,300miles (on the dot) want me to wait til 5,001 miles to give you another base line? i promise it wont be any difference.. only difference you'll see is from the difference caused by the climate.. btw that was at 9am in the morning on 9/18/06 with the weather at 70 degrees in the dyno room in Rancho, CA 91730 if location matters.



just took a pix of the monitor didnt bother to get a print out

sneek peek shot

 

QUOTE=Klumzyee From https://g35driver.com/forums/intake-exhaust/95091-what-mrev.html
"The FULL mRev Kit includes a Lower Plenum [AKA part of the intake manifold that houses the runners].

To keep things simple.. How air flows from your intake tube to your combustion chamber can have a BIG effect on performance. (Hence why people Port and Polish heads or have a Head Job Performed on their fully raced rebuilt motor). Our intake manifolds have 6 runners that are housed in the lower plenum. mRev simply modifies the runners for more of a Street use.. From 2005 and up the 6MT (298hp) engine has been redesigned to rev up to 7,000RPM (Done by adding stronger rods and rod bolts) now for Infiniti to take full advantage of the new 400rpms they re-designed their intake manifold with shorter runners for more top end power. To gain this top end power they sacraficed alot of low end torque.. "eh? how?" think of your engine as a giant air pump.. now if a runner is longer it'll allow air velocity to increase.. because our cars are not equiped with a supercharger or turbo it depends on velocity to push air into the combustion chamber.. Cause Infiniti shortened the runners it caused the air to loose some of its velocity.. kinda like sucking on a straw.. try breating through a straw.. easy huh? okey now go get a toilet paper roll and breath through that.. Now do the same thing but while running. To keep it simple.. Infiniti allowed the engine to breath easyer at higher RPMs (more air) but in return caused it to loose some of that low end torque (loss of velocity)..

mRev replaces the long runners with shorter runners like the 03-04 BUT they add a twist to it.. If they were to simply replace the long runners into shorter ones you'll loose ALOT of top end power. but in return you'll gain ALOT of mid range.. around +25tq at 4000RPM-ish on a dynapack.. BUT you end up loosing alot of HP in the upper 600RPMS since the engine isnt getting the amount of air it is designed to (valve lift, cam shaft..) So to keep things simple.. you've turned ur 2005-06 6MT G35 back into a 03-04 6MT... to fix this motordyne's added a 5/16th spacer and machined part of the runners for #1 and #2 cylinders. by doing so they've increased the total volume of the intake plenum allowing the engine to breath at the upper RPMS (more horsepower). So why do we only use a 5/16 and not a 1/2"? the 1/2" will slow air velocity down too much and ruin that nice mid range torque and hp... but by using the 1/2" you bearly loose any top end if any at all (if i recall it was like 1-2hp) with a slight increase in mid-range torque.. since daily driving is done at 2-4k rpm and torque is what gets you out of the hole its not worth using the 1/2"
"

 

is the mrev+ the same as the mrev++? or is the mrev+ only for +05 and the mrev++ is for before 05?

 

Interesting . . . I have just done 1 complete pass through on Tony's MREV+ install on a non RevUp engine thread. Based on what I read, the MREV+ (modified lower collector) does afford good benefits for the non RevUp engine. He states that plain and clear. However, upon further reading of the same thread . . . Tony has further modified the MREV+, which he has named the MREV++. His test data shows good yields for this lastest modification. The interesting thing is that the test data reflects only the newly modified lower collector installed and does not include a spacer. Hmmmm . . .