ok just reading this has made my head hurt... i thought i was understanding all this but Blah Blah Blah...

Mevi w/o ECU only good for high end power only
Mevi W/ ecu Good all bands?
00vi good in all bands but more work and breakable

that the jist of it? with out getting all Dyno-techie-guru like on me...Please

 

Just to clarify - I DID NOT say, nor do I think that the addition of a MEVI w/o an ecu upgrade w/ extended rev limit was useless, or unnoticable. I am fully aware that the increase in power with a MEVI begins at say 5500 rpms compared to the USIM, and is a very noticable increase. Again, I'm fully aware of this.

However, what I said (if anything that was replied after I posted was directed to me) was what I had read awhile back when reading through the faqs and supporting threads. I do not have a MEVI, nor have I driven a MEVI equipped Maxima. I'm sure the power increase for those 1000 rpms is a very noticable difference, however my argument (or should I say: the argument of previous .orgers that I paraphrased) was that without an extended rev limit, the power increase from 5500-6500 isn't enough to counteract the loss of tq in the midrange in order to produce a better acceleration/quarter mile time. After the qtr mile point, however, I know that the MEVI will walk a USIM. I hope what I just clarified was a given if it wasn't clearly stated in my first post...

 

I was just thinking after everything was said about the MEVI so I just threw it in there for good measure. Honestly for track use I don't see any other way honestly, I'd take it over 00vi or USIM just for that hard push at top-end. For your maxima owner craving that street, all-around power, then yeah 00vi I can agree. But the USIM pretty much loses out with the rev limiter gone in all aspects.

But as stated without the rev limiter removed I agree the MEVI is still making some power but negligable without that ECU IMO. In other words I just don't see it making up for its cost or the labor put in without the ECU in place.

This has all been said and debated before.. just thought I'd throw that 1/4 figure int here as stated that was my only contibution the rest is a repeat of things said years ago.

But hell if I know, I'm starting to partly doubt myself. goodnight.

/thread

 

looks like i caught the tail end of this one, im going 00VI, just by looking at my recent dyno with USIM I had 196 hp around 5500 rpms but at around 6500 the USIM drops off to 155 hp i think it was compared to someone like dandymax that has the same mods but OOVI and greddy EU, at 6500 rpms he was making around 220 hp. will have to look over the dyno charts again but that is a huge difference in top end power.

 

this is what all the hype was about....the fact that he said it was useless wihtou ECU......well u may only get 1500-1000 RPMs of usefull ness out of the MEVI with stock ECU thats still alot....again I am agreeing that 00vi>MEVI...but the 00VI can be more of a headache.....

 

The Question Is what is your POINT? Did you ever have MEVI on your car? Unless you have had MEVI and 00VI your statements are as subjective as anyone elses and probally worth less than a grain of salt. Bottom line.
I know many member who are VERY happy with there MEVI. I am, Obviously i30ds is and many other. You claim 00VI equiped maximas are so much faster I am still waiting for dyno and numerical proof?


To the Orignal poster either way you go your better off than you are now with your stock manifold.

 

zack did u ever Dyno before u put the MEVI on...i am just reading ur sig and i see one with MEVI and Stcck ECU

 

He did a comparison of midpipes and such (like me for the A33B) http://forums.maxima.org/showthread.php?t=361784

 

Yes i used to have a MEVI on my car and sold it. But that's completely irrelevant. What does that have to do with anything?

BTW, my point is summarized in post #71.

I dare you to find a post in this thread with me saying 00VI cars are soo much faster than cars with a MEVI.

 

in ur defense u didnt say anythign like that

 

How many times are people going to convolute what nismology said?

\Maybe the quote feature should be used as appropriate.

 

what is the quote feature

 

You're exactly right. The MEVI only makes a few more average HP from 2000 RPM to redline. The only way you'll end up running a faster 1/4 mile time with a MEVI compared to the USIM is if you do a honda style launch at 5000 RPM or something. Also, there have been cartest 1/4 mile simulations done comparing MEVI cars to USIM cars and with the 60' times being equal, both cars usually run close to the same 1/4 mile times with the MEVI car having a 1 MPH higher trap speed. This is all assuming the stock ECU is being used. It's a totally different ball game with a JWT ECU.

This has been common knowledge in the 4G community on the org for years now. (Not directed at you)



IBnismologyhatesthemevi

 

if its not going to be faster then what is the advantage. Your claim continualy states more power. what is the over all effect of more power?
It is implied that a car with 00Vi would be faster.

 

I hope this is how you "quote" haha

Anyways, that's what I've been saying - that it's been known but since no one had stated it yet in this thread, I decided to throw that in. And because it's been known...I couldn't really figure out why I caught heat for it, like:
Oh well.

 

What post are you referring to in this thread? Please be specific.

 

Why the fck is this thread still going?
Did anyone post the dyno's of the guy that had the MEVI and then the 00vi?

 

QFMFT. Apparently, reading comprehension is optional.

 

http://forums.maxima.org/showthread.php?t=363625

 

Shhh!!! Don't post stuff like that!! People will label you as anti-MEVI!!

 

Oh noes, what ever will I do

 

Dyno graphs:

http://forums.maxima.org/showthread.php?t=424641

 

You mean that's a STICKY. OMG Who ever woulda thunk it

 

Don't tell anyone.

 

ok we know 00vi > MEVI........i dont know exactly what BigLou was trying to get at because I have looked at that dyno many times and know its better....but I was defending the gains of the MEVI w/Stock ECU....

 

This subject is getting another beating...

Ever stepped on an ant.... then slid your foot across its carcus and smeared it on the pavement?

 

Here's a summary:


USIM
- Stock (in the US)
- Torque peaks at 4,000 rpm and then drops off sharply
- At redline, power is 25-30hp lower than peak
- Power curve is relatively rough
- ECU upgrade makes power gains but does not smooth out the power curve or reduce high end loss
- Extended rev limit is of very little use due to rapidly falling torque above 4,000 rpm


MEVI
- Relatively easy install (everything bolts up like stock)
- Low chance of disabling the engine even if the MEVI fails
- Slightly weaker midrange than USIM
- Slightly higher peak power and torque than USIM
- Power curve is VERY smooth
- Torque drops off very slowly after peak
- Peak power lasts much longer than with USIM
- ECU upgrade makes good power gains
- Most breathing mods yield better results than with USIM due to cumulative effects with the high-end efficiency
- Extended rev limit is a significant improvement because the slow torque dropoff will allow power to continue to be made long past stock rev limit


00VI
- Harder install, some custom work involved
- Some chance of problems affecting the engine's ability to run at all
- Prone to cracking
- Higher peak power than MEVI or USIM
- More power than MEVI or USIM over the entire rev range
- Power curve smoother than USIM (not as smooth as MEVI)
- Torque drops off very slowly after peak
- Peak power lasts much longer than with USIM
- ALL power mods yield better results than with USIM or MEVI due to cumulative effects with better breathing at all RPMs
- Extended rev limit is a significant improvement because the slow torque dropoff will allow power to continue to be made long past stock rev limit

 

The USIM makes good power til ~5500 RPM, then drops off sharply.

The mid-range loss is pretty significant. It's also makes less peak torque than the USIM, mod for mod. Also, from what i've seen, the PRIMARY perk of an extended rev-limiter is so the RPM's will be in the sweet spot on the upshift, not necessarily because the motor is making a ton of power past redline.

Power curve not as smooth as the MEVI? Where'd that come from?

 

The dyno graphs that I've seen, like the one in the All-Motor stickies.

 

this is thread from hell.

 

They both look bumpy to me. But i guarantee you those humps are pretty indiscernible from the driver's seat. I've driven a car with the 00VI and the power delivery feels butter smooth from low RPM's to redline. Moot point, and shouldn't even be discussed if the difference can't be felt.

 

I wasn't getting at anything - just repeating what was in the stickies, and in older threads that I've read...exactly what I put down.

Nowhere did I say one was better than the other, I was just presenting that fact. If you're looking for top end power, then MEVI even without a rev limiter upgrade will still impress you. All I was saying, (which nismology agreed with...) was that without that rev limit extended, a MEVI equipped car won't be THAT much faster to the quarter mile point than the USIM, if any.

Yes, there are gains, and that's not what I was arguing. It just depends on what you want to do with your car (stated by you, I think). What's funny though, is I believe you yourself said that for autocross, you'd rather have the USIM instead of a MEVI a long time ago, however I could just be thinking of someone else. To maybe refresh your memory, someone then said "why not downshift to first" and that sprung into another debate on why it's retarded to force first gear at 20 mph just to get the MEVI's gains.


<-----exactly what this thread is doing...I've said the same thing over and over...haha

 

What's your point?!? You made a claim. I said I have seen dynos that refute that, and instead of responding to that, you post the estimated dynos from the sticky that everybody has seen 10,000 time before.

 

I'll be the bigger person i calm down the tone of our "discussion".

Just so i understand, what are you disputing, the fact that the USIM makes solid power to 5500 RPM, or that the MEVI doesn't make any more power than the USIM until around that same 5500 RPM mark?

 

My point is that you noobs need to go to the All Motor Forum and research. Trying to argue against the facts makes you guys look dumb. Thread closed.