I am getting MEVI for my car. Jay25 is selling his and hopefully i can pick up the full kit when he gets back. Now before everyone goes off on there 00-01 VI is better why not get that; its because i don't wanna have to fab anything and i want a true "Bolt On". My car is a Calispec 99 5speed. Becuase my car is a 99 there is no ECU option or chance of a raised rev limit. I can however get a SAFC II and do some A/F tuning. My question is for the guys who have had MEVI before the ECU install. How bad is it? I know you lose 10-15lb-ft of TQ but is it that noticeable?
These are my most recent Dynos , my car is making 191-193WTQ do you guys think if i install the MEVI this will be greatly depleted? i mean if i lose 10wtq i still have 180+lb-ft TQ. Will my 1/4 mile times die?Does anyone have actual dyno files of intake/exhaust/ypipe/mevi so i can open these in dyno jet view to see where i will lose the majority of my power?
Dave B,Neal, Mike anyone?
here is my best 3rd gear dyno

Best 4th gear dyno

 

Honestly, I'd just invest the money in an extrude honed intake manifold (4th gen). That will give you 7-12fwhp/tq throughout the midrange and topend. The MEVI will take out 10whp/wtq in the midrange which is the most critical in drag racing. Before I got my ECU, my MEVI setup gained me absolutely nothing in the 1/4 mile. 14.6s@96mph before the MEVI and 14.6s@96mph with the MEVI. When I added the ECU, my ET/MPH automatically went into the 14.4s@98+mph. The MEVI really needs the JWT ECU for the replaced midrange power and the increased rev limiter which is most critical to this setup. The SAFC won't do much for you at all because much of the MEVI's power loss issue with the turbulence of the butterflys (before they open), not A/F.

I totally agree with you on the DEK VI. There is a lot more fab work involved and it's not for the faint of heart because you do have to splice into all the injectors wires and figure out what to do with all the emissions gear.

The MEVI install is pretty straight forward. I actually just removed mine tonight. It took me about 3.5 hours from start to finish. I could have done it quicker, but I forgot some of the shortcuts which were primarily related to getting the manifold coolant lines off and lining up all the mounting bolts for the manifold, manifold supports, and EGR. I don't look forward to helping my friend with this install again though. You never know what you'll encounter when doing all this work on a 10 year old car. My biggest fear is aligning gaskets so they don't leak. There are four gaskets you have to remove during this install and any of them can go bad if you don't torque the bolts correctly. I got lucky again. No vacuum leaks. 21Hg before install and 21Hg after install. I took her for a spin and man does she pull hard from 3500-5800rpms with JWT ECU. I never got a chance to run this setup with just the JWT ECU. It's quite fun. No more fun 5000-7000rpms blasts though because she ain't got much above 6000rpms now My G35 sedan will cure that though

 

You aren't going to run any faster in the 1/4 mile with an MEVI only. If you desire to have faster 1/4 mile times then you are going about it the wrong way. Don't spend money on a mod that is going to leave you in the exact same place you are right now if you want better 1/4 mile times. If you desire to have more top end power for the highway then get it.

 

What Dave and Neal said is right.

I will chim in about the dyno #'s. Your peak #'s won't change much, your peak tq will drop a few lbs. The curves will just be totally different. See those two humps in the tq curve at 3.5K and 4.5K? Those will just be choped off. It actually makes for a nice smooth curve, just a tad lower.

I really liked my MEVI, with and without the extended rev limiter. I am a track junkie but that is not all that matters to me. I just liked the power curve of the MEVI better than the stock manifold. I no longer have my MEVI and ECU and man does it suck.

 

well i can tell you is that you can feel the loss in the low end i miss all the tq the car had with the usim but i do alot of highway driving and i can say nothing beats down shifting and opeing it up and feeling the car pull to redline.once i get a moment im going to get that damn 96 ecu to work in my car.i havent really had the time to get it figured it out but ill do whatever i have to to get it to work.i have the 96 and 99 ecu diagrams so it will take a few pin swaps and i think it will work..just might have a cel which i dont care.the only thing i can say is if you dont mind low end loss go for it.i raced my car before and after the mevi install and i was no faster i was auctally alittle slower.but all that will change with i go boosted next month.

 

Well what everyone has said makes sense and i have been trying to figure out what i really want. I drive 40 miles a day to and from work and that is all highway/traffic driving. So i think the MEVI would be great on the highway. I do like Dragracing but i only got twice a yeah since the track is not very close. I am going to go ahead and get the MEVI since Dave B shows no diffrence in Track times with MEVI and no ECU from when he had no MEVI at all and i am sure the car was more fun for highway driving. i am hoping that even if i lose 10-15lb-ft of tq it will still be sufficent for everyday driving. I orignally wanted to get the extrude honed Intake Manifold but at $650 it wasn't a wise investment because i can alway sell the MEVI back at a slight loss but the Honed manifold may not sell as easy.i would like if anyone has dyno files with MEVI and there mods if they could e-mail them to me so i could compare what powerband may look like. thanks for info guys

 

i also have the underdrive pulley and i think it help gain back alittle that i loss with the mevi.. i could tell a right away it had alittle more low end power..

 

have you every dynoed/ran at the rack chuckie?

 

I do have a y pipe mated with the VI. The car has good power too. The loss is still there but I drive from Franklin to Boston everyday and the car is great to drive on the highways. Standing start accleration is good but it's the downshift at the wrong speed what kills you with having the VI. I'm going to get my ECU soon from Technos so we'll see what kind of gains I feel at that point.

 

gotta love this statement

either one of these will do for me

http://g35driver.com/forums/attachme...tachmentid=402

or

 

it really sounds like you want the 2kVI. yes the install would be harder BUT you wont loose any power. You will have the top end power of the MEVI with the low end grunt of the USIM. I would imagine all the parts needed for the 2kVI switch will be made and possibly mass produced....becoming a "kit" and step by step instructions just like the MEVI. im definetly waiting for that.

 

Exactly. With my MEVI (w/o ECU) I was about 2 tenths slower in the 1/4, and 2-3 mph slower. With the 00VI the midrange is very similar to the USIM, while the top end is a tad better than the MEVI.

I used the 4th gen lower, and other parts, and honestly it wasn't that difficult at all.

 

would you care to expand on what you did to make the 00 VI work? Plus where i live they have very strict emissions testing which and i can't afford to fail. i did see your post and i thought your setup was sweet but custom work isn't my thing. Also i don't know how i would like my car being slower in the 1/4 mile. i can deal with mevi not making it faster but making it slower is a bid disappointing..
SO my options are

Headers.......NO since they make the car no faster
MEVI ..........not sure i may just do it and deal with the loss of the low end and give up drag racing.

 

00VI STUFF
http://forums.maxima.org/showthread.php?t=365082
http://forums.maxima.org/showthread.php?t=362040
http://forums.maxima.org/showthread.php?t=353888

DYNO comparision between the 00VI and MEVI
http://forums.maxima.org/showthread.php?t=363192

 

I don't get it, without an available ECU for a 99, the 2kVI would be the obvious choice since you lose no mid-range power.

CHUCKIE CHANGE YOUR SIG, dead space

 

See the thing with me is that I'm not scared to make the VI work and I will do what it takes to make everything right (performance wise). I like the idea of the 00VI, but I commute with my car and I don't want to deal with it at all. I'll get the ECU and bring up the midrange. I won't care that i'm the fastest modified auto on the board now that I want to start upgrading in the looks department.

 

Deezo if your not busy some time would you mind if i meet up with you and check out what MEVI is like and maybe you can take me for a ride if you don't mind. I don't wanna do anything to drastic that would prevent me from returning to car to stock at a moments notice and mevi seems simple enough. Other than the track i don't ever street race, just don't find them although i wouldn't mind. The majority of my driving is Highway so i think maybe MEVI will be a good choice and between you and me when i would go to the track i would get owned by most cars anyway. 14.7 isn't that fast anymore.

 

Let me know when you're free. I'm off until Monday. I'm usually in Randolph hangin out with my brother-in-law working on his truck.

 

Great i am off for the next 2 week. Monday is good for me.

 

i havent ran at the track yet with the underdrive pulley yet.. but jan 22 i will to see it it helps or not. after that the underdrive will be taken off and the car will be boosted.

 

So Im sitting on my MEVI, got my JWT ECU working (its great) and am/was all set to do the MEVI install. Now I hear that extrude honed is the way to go?! It is incompatible with the MEVI, I am assuming?

or..is it?

Since I already bought the MEVI, the switch, found the vaccum actuator at a picknpull, it just seems laim not to install it. Unless there is clearly a better route and I can get most of my money back on it. Its all sitting in perfect condition in the garage.

What would you do..? The 00VI is tempting if it becomes a kit. Im sure I would miss the midrange pull of the USIM, cause it just aint that often that I get up to 6-7K rpm.

 

i doubt there will be a kit for it oovi..i would just install the jwt ecu and the mevi