For those of you with MEVI and exhaust mods I have a question.

How much of a difference do you notice on highway passing? Looking at most 0-60 and 1/4 mile run times posted, I see little if any advantage of going MEVI. However everyone has or wants it. The truth is the maxima is hardly a dragster, but it is nice to have the power when you need it. Puling onto on ramps passing at higher speeds. In my car i have no problems at all up to 85 or 90 mph. Then its like I am pulling a trailer.
Does MEVI do away with this? does it decrease the time it takes to go from 40 to 80 etc? Did you see good improvement in those areas when going MEVI.
Also on the other side how did it affect gas mileage?
thanks for your answers

 

I don't have one but looking at the grins on the owners faces tells me that it rocks. You have power til 7200rpm so how can this thing not PULL up top...

 

It all depends on what part of the power band your RPMs are in. As you know, there'll be less passing power in the midrange compared to before but up top it's really nice. All in all, I can definitely get to 130 (end of 3rd gear) in my auto a lot quicker than before.

 

I have a bad lag around 120mph..do you think it will help alot with that lag???

Chris

 

The type of power your looking for is exactly what the VI gives. It shines at 80+mph. I pull like mad from 90-120.

 

should be excellent with your 101 trap speeds

 

In the 1/4, it's a bit better. On the highway, the MEVI rules.

DW

 

Dave

 

Ok ,I guess that where im going next. I need that extra pull on the hwy. Like i said before, the car is awesome from start up to 80 or so. So this sounds great. also need to get that lightweight flywheel and ACT clutch! I am still using an oem clutch. Its less than 10,000 miles on it, but it slips like crazy when I try and run hard 1/2 shifts. I suppose the act will grab and help me there as well?


thanks everyone i have been enlightened.

 

ACT wont slip if you know how to drive it.

 

1) Don't waste your time with the MEVI unless you have a JWT ECU with a 7000-7200rpm limiter

2) 0-70mph power is basically the same (assuming you have a JWT ECU). Once you hit 3rd and the higher gears, the Maxima is significantly quicker

3) This mod will not throw you back in your seat any harder. It just keeps pulling past 6000rpms.

4) Don't waste your time with the MEVI unless you have a JWT ECU with a 7000-7200rpm limiter


Dave

 

1 and 4 are the same answer

3) This mod will not throw you back in your seat any harder. It just keeps pulling past 6000rpms.

being used to a 100 shot of nitrous.. i couldn't tell if it was working or not everyone said it had a kick.. i kept waiting for it.. couldn't tell .. all i know is you feel a mini hesitation when it activates

 

Well I have a G-Force ECU. So you are saying get a JWT instead first? From you chart on our page. Which bye the way is exellent Dave, It shows extra power from 5400 RPMS to 6500 RPMS of nearly 50 HP at wheels. My G-force Goes to 6500 RPM, so why would I need a JWT to see an improvement? Is there something i am missing here? If i wanted that extra 400 RPM to take me to 7200 or so the, could i not get the JWT later on? Just wondering?

thanks Dave.

 

 

It's all about ideal shift points and the changed powerband of the MEVI. The MEVI's powerband is from 4800-6500rpms where as the USIM powerband is from 4200-5600rpms. The 7000-7200rpm limiter will allow you to enter each gear 500-700rpms higher than with the 6500-limiter. This allows you to enter each gear at nearly the ideal RPM (~4800-5000rpms). With the stock 6500-limiter and the MEVI, there will be a slight bog because you're not in the ideal powerband. Those that have gone to the track with just the MEVI, have noticed they're no quicker than with the USIM. Then they add the JWT ECU and they're .3 and 3mph faster. If you're MEVI (again, not running the JWT ECU) malfunctions and doesn't open you'll be a solid .3 and 2mph slower than the USIM. I've proven it on track 3 times now.

As far as I know Iansw never went to the track prior to the MEVI. He made passes with the MEVI on and with the MEVI off. He noted just about the same results I saw. He was something like .3 and 3mph slower with the MEVI off. Too bad he never tested with the USIM because I'd bet he would have noticed his USIM would have been as quick as when his MEVI was engaged.


Dave

 

It really has nothing to do with what speed you are going. The simple explanation is this, above 5000rpms your car will be faster with MEVI, below 5000rpm you car will me slower with MEVI. I cruise at 80 at around 3300rpm, so no, if I don't downshift my car doesnt have any extra passing power because it has an MEVI.

 

Well all I have to say is I love the MEVI (can't wait to get the ECU though). Before I got it I could go to redline but it was pretty useless seeing as the car sucks after 5600rpms so I never did. But with the MEVI I can bring the car to redline and have the car pull through the entire gear. Plus now every gear I can get up to 10 mph higher than when I didn't have the MEVI on. I use to only be able to go to 60mph in 2nd and 90 mph in 3rd. Now I can get to about 67mph in 2nd and 100 in 3rd. I have no regrets in getting the MEVI. Now once I get my 2 front O2 sensors replaced I should feel a little more power. If you ask me I say get the MEVI. And then save up for the ECU. That's at least what I'm doing.

 

I completely agree. I love my VI every time I take off and wind out first and second, every time I downshift to 3rd and pass someone on the highway, and every time I redline the max in any gear. It feels and sounds so nice pulling all the way to redline, I would never give it up.

If you want a highway monster, get yourself a VI.

If I could get an ECU, I would, but until that day comes (never) I will still love my VI.

 

Don't you need the JWT ECU as well to get better ETs?

I had a 14.6 (in May) with just a y-pipe, b-pipe, test pipe and JWT cone. But then I got the MEVI and got rid of the test pipe and I ran a 14.8 (in much warmer weatherin August)... but still... shouldn't I be running better times with just the MEVI... I don't have the ECU yet.

 

The JWT will make a bigger difference, but you should still get better ETs, if only slightly, when compared to a Non MEVI. Since the difference is slight in the 1/4 mile, it can go either way, depending on conditions. The thing with the MEVI is that it loses some low end torque from OEM, then adds a bunch more up top. Adding an ECU will restore that low end and beef up the whole TQ curve, as well as raise your rev limiter. The JWT ECU and the MEVI are a match made in heaven Those guys at JWT should use it as a marketing tool to sell more ECUs to the Maxima community.

DW

 

It's really hard to compare times like that. It can be a guide but you would need very similar weather conditions and similar 60' in order to have a comparison.

 

You must have the raised rev-limiter for the MEVI to make any positive measureable difference at the track. The stock rev-limiter forces you to shift too early which makes you enter each gear 500rpms too early and spend too much time in the curve where the lack of power is occuring.

I was no quicker (most often slower) with just the MEVI and the same mods. Then I got the ECU and I'm faster by a long shot. My prior best without the MEVI and ECU was a 14.68@96mph on stock 15s in 60 degree weather. My best with the MEVI/ECU is a 14.45@99.5mph. Hell, I ran a 14.61 in 100 degree heat a couple nights ago and with my 17s. The MEVI/ECU combo flat out works.


Dave