just wanted to know any times any automatic non ECU modded MEVI equipt max's ran? i currently run a 15.6 which isnt bad but it isnt good either but im happy enough with it. I bought a MEVI but am now debating weather or not to put it in because of the launch problems with MEVI and automatic trans... any feedback or times from people that actually have firsthand experiance with the MEVI on an auto. and not from people that just want to say the lowend you loose is too much and your car will suffer but dont have any sugnificant proof to back it up in the automatic world being that were in the higher rpm's for longer. Remember dont care about the 5 spd stuff just want to know about with auto. i think cumalot had this setup maybe idk for sure though. thanks -Ryan

 

forget the MEVI and just go for a 00vi, theres somewhat of a write up in the allmotor section here

 

i already figured that one out but i dont want to make any custom stuff like adapter plates and finding all the parts in the junkyard. Besides that i said "I bought a MEVI but am now debating weather or not to put it in because of the launch problems with MEVI and automatic trans..."

 

I dont think you should have a problem. With a mevi, you loose low end

 

well ok heres the main question i would like to know which i dont think you understand that i know all that and saw the dynos and everything i dont really care about the gains and losses i just want to know if it will get me a faster QM time without me actually wasting the time to install it and drive 200 miles to the track thats not even open yet to find out that i lost .4 or somthing . and preferably in automatic trans config because everything i can find on it is always on the 5 spd guys never shows QM differnce for automatics. ive only seen one post but he had jwt cams mevi and automatic wish i could find it again.

 

I think the general consensus is that if you switch the IM's without an ecu upgrade, you've just "shifted" your power, in few words. Instead of having good low end, you have good high end, and the results almost cancel themselves out as far as numbers go. If someone has a different opinion, post it. However, if memory serves me right, I didn't think that switching IM's had a difference on track numbers. It isn't until the extended redline comes in that the effects are realized. I'm sure this goes for auto too, but I admit I don't know much on the subject.

 

you should see some gains. maybe a 15 on the 1/4
But you need a y-pipe, and a full exhuast. Then you should consider getting your ecu
Or skip those and just get the ecu. Im not sure if theres an ecu out for a 99 yet. Someone check it out yeah

 

I had a conversation with Iansw and MaximaN about this.

I would gather that through the 1/4 mile you won't be gaining any quicker times, and if anything, might even lose .1-.2 as the MEVI tends to smooth out the midrange torque bumps. Supposedly the VB mod can improve times but I haven't dug into this.

On an auto the MEVI alone will enable you to wind power all the way to redline as opposed to 5,000-5,500rpm which is the sole reason I got the MEVI myself.

 

you wil not see gains with just the mevi.

 

well mixed reviews here...frankly i dont know what to do then...if im gonna break even or close then maybe ill just go for it sense like i said auto most of the time when i happen upon a race im already moving and when i floor it it jumps right to loud noise but doesnt really move until it shifts so idk. Theres obviously no ECU for the 99 but i do have the Y pipe, 2 1/2" back to muffler, the PR CAI, resonated test pipe, and drop resistor, & suspension to help me better launch. The question is what other mods could i get then to make the MEVI's gains more in the midrange or somthing or just any other engine mods i could do to increase power for the QM?...besides boost

 

I've wondered about this myself. One thing that appeals to me about the MEVI is the much added power on the freeway when passing. I also thought about, if you were to race someone from a roll, wouildnt you end up seeing better times with the MEVI since you end up spending more time in the higher rpms?

 

Well is there anybody with the MEVI thats actually automatic because the more i look into it its always reviews from the 5spd guys which dont spend as much time up in the high rpms like auto does. so what im thinking is once i get goin at the track if i just manually shift 1st and 2nd right before the limitor i would gain at least a .1 or somthing i dont understand how i couldnt especially the fact that 3rd gear goes right into the "no power" zone with the usdm maifold when it shifts at the track. somone thats auto with the mevi needs to chime in here. also Bonka, are you auto or 5spd and did u ever get to install your MEVI yet?

 

I have the MEVI with no ECU, but 5 spd, so my opinion may not matter here... My quarter mile time really did not change a whole lot, but I trap about 2-3 mph higher with the MEVI. I do about 50 miles of highway driving a day and I couldn't imagine having the USIM again.

 

I'm auto.

MEVI is not installed yet. Waiting for some more parts.

You might want to PM "iansw". I believe he had the MEVI while he was still auto, and without ECU and SC at the time.

 

im going to be installing my mevi the saturday coming up. Im sure with a y-pipe, full catback, pully, performance cat that you shouldnt lose much. Since in 95-5 speed I should feel more of a diff than you 97-99 guys because 95's are a bit quicker and lighter. Ill keep you all updated. I wont have the mevi activated intill I get someone to do it for me. Im just plan confused when It comes to that, But I can install this thing.

 

lol thats kinda funny. youll install the manifold but not the rpm switch? im really kinda confused on that part also but i figured that once i got to doing it that id figure it out. i really would like to see a more picture oriented non confusing install "how to" than the one thats on VQ power that one is just wierd i dont know.

 

deezo has MEVI and ECU and he is auto ask him

 

I dont find it funny, Have you put an full exhaust together? Have you ever taken something off and then put it right back together? Lets say your remote was toasted, the problem happens to be a bad transistor now you will know how to open it and put it together but can you find out which transistor is messed up? Im not that advance enough to understand what im cutting and sodering wires together. Putting on the manifold it pretty straight forward. Not all of us have the same RPM switch nor the rest of the hardware, im sure its still the same way to hook it up. I rather leave it in the hands of someone who knows what they are doing and me learn from that. Im sorry to sound rude and defensive. Im a nice guy but I hope you know what im trying to say. I rather learn about it before messing up my car.

 

Iansw hasn't been auto for a long time.

 

well that was no pun twords you at all man, i have put my exhaust together and i HATE doing exhaust work especially if its old crap like on my 95 that was the absolute WORST talk about torch use but anyway i dont really know electronics very well either all i know what to do with the switch is finding the correct wires strip them with a wire stripper tool solder them together and electrical tape or somthing. i figure if mine doesnt work when im done im SOL and need to find an expert as you will. ill prolly just post some pics and try to find out whats going on.

 

just curious do you have a mevi? i put mines on acouple weeks ago and i still get the same take off power. maybe its the people with the mevi and no y-pipe that see all this loss but i didnt. maybe someone showing a dyno can prove the actual loss amount but the power you loss from adding the mevi is the same power you gain from adding a pulley t me that is which is really nothing until you get on that highway then

 

I don't know why people keep saying there is a low-end loss with the VI. There isn't. There is a midrange loss.
Back to the point. Joos, I have a Budget Y and the VI and the car still takes off like a bat out of hell. You shouldn't see any kind of problems with the VI on launches.

I don't have my ECU in yet.

 

People keep saying you lose low end and some say you lose a lot of low end. How much is a lot, I doubt its there's a huge diff. I thought about it, How much low end power are the maxima's (if called maxima) That come with a mevi from factory loose? Im sure the ECU is reprogramed but nothing so advance like JWT to see gains. Im sure they dont come with a y-pipe/performance cat./Full catback exhaust. Im sure they will be loosing a lot of power. I know everyone here keeps saying it, But I keep questioning it, I doubt I will see a diff in my low-end. Im going to put on the mevi and not activate it. Studing the mevi shows its almost alike to the stock manifold except it has a VI in it. You should be gaining more airflow. Im not calling anyone a lier if it does loose power then it does I would like to see it for myself.

 

Are you talking about not ever activating it? If so, that defeats the purpose of having the VI. Just keep in mind that most people making comments here have never driven a VI enabled Maxima and didn't even see the dynos. You will feel tha car lagging in the midrange, not on the lowend and definitely not on the highend.

 

The automatic benefits a bit more than the 5spd due to its longer gearing. I would advise getting the extended rev limiter.

There have been many comparisons, and it's usually about 10-12 ft/lbs in the midrange, but about +35-40 whp at 6.5k, so getting the MEVI w/ JWT you get back what approximately you lost, and are able to go into the upper 6k's and take more advantage of the latter region of the tach.

 

It makes the car feel like Autobahn material.

 

Sounds better too.

 

No im going to activate it the day after I put on the manifold. I dont have much time 2 do things. Im going to have a family get together so ill have time the next day to finish everything. That defeats the purpose of having a mevi lol. I def want it to work, trust me. lol.

 

It's ok to do it in 2 phases. It's a lot of work when you haven't done it before. I did the install of the VI on one afternoon and get up the next morning to work on the vacuum and electrical stuff.

 

because there is a loss. i have swapped back and fourth between the mevi and the usmi and i notice a difference in the low in loss right off the bat..

 

Where is the dyno showing a loss at RPMs up to 2500 because I'd like to see it. If you're using butt dyno info, I feel the difference above 3000 and under around 4500 RPMs.

 

deezo is the man enuff said lol.

 

How noticeable is the torque loss in the midrange? It pulls real hard with the USIM already so I can't imagine the MEVI turning that meaty area into a slouch.

I also have a 1.9L Escort so I know all about lag.

 

It sucks compared to the USIM.