If you have MEVI
#1
If you have MEVI
A couple questions for those who have MEVI.
First of all, were the gains worth the money and effort?
If you installed yourself how difficult was it and how much time did it take you? If you got it installed professionally where did you get it done and how much did it cost? I'm sure this is a "no no" job for the dealer. Also anyone with info on where they got it installed in the CT area would be appreciated.
First of all, were the gains worth the money and effort?
If you installed yourself how difficult was it and how much time did it take you? If you got it installed professionally where did you get it done and how much did it cost? I'm sure this is a "no no" job for the dealer. Also anyone with info on where they got it installed in the CT area would be appreciated.
#2
Originally Posted by Tort
A couple questions for those who have MEVI.
First of all, were the gains worth the money and effort?
First of all, were the gains worth the money and effort?
If you installed yourself how difficult was it and how much time did it take you?
Be sure to use Loctite on the tiny butterfly valve screws. If you don't they might come loose and give your engine a bad case of indigestion.
#4
Originally Posted by Tort
I also have JWT ECU along with Y-Pipe, Cat, and Cat-Back Exhaust. Was the gain about equal to what you noticed with ECU reprogramming?
#5
Yeah, you usually see the best performance out of the MEVI if your running boost. On an N/A car, it isn't nearly as noticeable, but there is gain up on the top end. Down side is you loose power down in the low end. One of the more typical tradeoffs really. If your planning on running boost, I say the MEVI is worth it. However, if your not, then it's sketchy if its really a worthwhile mod IMHO.
S
S
#6
Originally Posted by maximase86
Yeah, you usually see the best performance out of the MEVI if your running boost. On an N/A car, it isn't nearly as noticeable, but there is gain up on the top end. Down side is you loose power down in the low end. One of the more typical tradeoffs really. If your planning on running boost, I say the MEVI is worth it. However, if your not, then it's sketchy if its really a worthwhile mod IMHO.
S
S
The calculations have been done and the track numbers have been generated. If you want the quickest NA 4th gen, the MEVI/JWT ECU is the only way to go. If all you care about is 0-70mph, then the JWT ECU is the way to go.
Dave
#8
Does Mevi effect Smog?
I live in CA and i dont really wana swap this stuff out every time i wana get smog checked...im already gona have to to it with my y-pipe....also does JWT ECU effect smog as well? has anyone in CA tried to get smoged with MEVI/JWT installed? or just JWT installed without MEVI?
I have posted this question like 10 times with no answer...can someone PLEASE give me one? hehe![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
Sorry if im stealing the post but concidering there are large gains im wondering if these gains effect emisions... specially since im in cali...
I live in CA and i dont really wana swap this stuff out every time i wana get smog checked...im already gona have to to it with my y-pipe....also does JWT ECU effect smog as well? has anyone in CA tried to get smoged with MEVI/JWT installed? or just JWT installed without MEVI?
I have posted this question like 10 times with no answer...can someone PLEASE give me one? hehe
![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
Sorry if im stealing the post but concidering there are large gains im wondering if these gains effect emisions... specially since im in cali...
#9
Originally Posted by XeroX
Does Mevi effect Smog?
I live in CA and i dont really wana swap this stuff out every time i wana get smog checked...im already gona have to to it with my y-pipe....also does JWT ECU effect smog as well? has anyone in CA tried to get smoged with MEVI/JWT installed? or just JWT installed without MEVI?
I have posted this question like 10 times with no answer...can someone PLEASE give me one? hehe![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
I live in CA and i dont really wana swap this stuff out every time i wana get smog checked...im already gona have to to it with my y-pipe....also does JWT ECU effect smog as well? has anyone in CA tried to get smoged with MEVI/JWT installed? or just JWT installed without MEVI?
I have posted this question like 10 times with no answer...can someone PLEASE give me one? hehe
![Smilie](https://maxima.org/forums/images/smilies/smile.gif)
#10
Originally Posted by Dave B
I disagree. With the JWT ECU, the low rpm loss of power with the MEVI is restored. A MEVI/JWT ECU/y-pipe/intake Maxima makes slightly more power from 2000-5000rpms than y-pipe/intake Maxima. After 5000rpms, it's lights out for the Y/I Maxima. With the extended redline and superior high rpm power from 5000-7000rpms (20-45fwhp gained over the stock manifold), the MEVI/JWT ECU Maxima will proceed to put distance on the other Maxima in every gear except 1st. Remember that when I shift from 1st at 7000rpms, I'm landing at nearly 4800rpms and the 2-3 lands at just over 5000rpms. On every shift I'm landing in a thicker and broader powerband. That's what wins races. A Maxima with the JWT ECU will fair better against the MEVI/JWT ECU, but it will still get walked once 3rd comes around. From a 60mph roll, the MEVI/JWT ECU wins.
The calculations have been done and the track numbers have been generated. If you want the quickest NA 4th gen, the MEVI/JWT ECU is the only way to go. If all you care about is 0-70mph, then the JWT ECU is the way to go.
Dave
The calculations have been done and the track numbers have been generated. If you want the quickest NA 4th gen, the MEVI/JWT ECU is the only way to go. If all you care about is 0-70mph, then the JWT ECU is the way to go.
Dave
![Big Grin](https://maxima.org/forums/images/smilies/biggrin.gif)
As for emissions, the MEVI won't have any effect on emissions. I've yet to see one person fail emissions because of the MEVI.
![Big Grin](https://maxima.org/forums/images/smilies/biggrin.gif)
S
#13
Originally Posted by Tort
Anybody have a rough idea of how many hours it took them to install??
S
#15
Originally Posted by max2max-98se
so getting the technosqaure ecu would be a waste of money with mevi?jwt all the way?
#16
Ive been thinking about an ECU/MEVI in the near future as well. After some research, I would mostly likely get the ECU first, then get a MEVI later.
One problem is that Im a '98. I know people say using a 95-96 ECU would work but it comes with a CEL. Now my question is, does it matter what year ECU i get to be modiefied? (95 has to be used for 97, and 96 has to be used for 98??) or it doest matter? The reason im asking is because theres a 95 ECU for sale. I know I have to match transmissions (auto/man. ECU) but do I have to match the trim too?
One problem is that Im a '98. I know people say using a 95-96 ECU would work but it comes with a CEL. Now my question is, does it matter what year ECU i get to be modiefied? (95 has to be used for 97, and 96 has to be used for 98??) or it doest matter? The reason im asking is because theres a 95 ECU for sale. I know I have to match transmissions (auto/man. ECU) but do I have to match the trim too?
#17
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Originally Posted by DpG $h0rTeE
Ive been thinking about an ECU/MEVI in the near future as well. After some research, I would mostly likely get the ECU first, then get a MEVI later.
One problem is that Im a '98. I know people say using a 95-96 ECU would work but it comes with a CEL. Now my question is, does it matter what year ECU i get to be modiefied? (95 has to be used for 97, and 96 has to be used for 98??) or it doest matter? The reason im asking is because theres a 95 ECU for sale. I know I have to match transmissions (auto/man. ECU) but do I have to match the trim too?
One problem is that Im a '98. I know people say using a 95-96 ECU would work but it comes with a CEL. Now my question is, does it matter what year ECU i get to be modiefied? (95 has to be used for 97, and 96 has to be used for 98??) or it doest matter? The reason im asking is because theres a 95 ECU for sale. I know I have to match transmissions (auto/man. ECU) but do I have to match the trim too?
#20
hey tort,
i installed my mevi, it was my first major thing i've done on my own...give yourself a 3-4 hours if you aren't that familair with your engine bay...and dont' rush when doing it, cuz if one thing isn't tight enough or placed right you could get yourself screwed with a vaccum leak.....the actually bolting it on isn't hard...preping the mevi, use loctite on the tiny screws for the butterfly valves, put a dab on the threaded part of the screw, don't put it in the hole then screw the screws in, you will get thread lock (like i did
)
next is the wiring and the extra parts....make sure you get all the extra parts and yes you will need them all....here is what you need:
-vaccum canister (nappa 11$)
-vaccum hoses (15$ worth)
-vaccum solenoid off an 87 nissan pulsar (70-80$
-hook up wire from RadioShack (red, black, green 16 gage)
-spade connectors (also from Radioshack, should be blue and red
-30 amp switched relay (radioshack as well) its a small black box with for metal connections on it
-summit racing rpm switch and/or harlan rpm switch
www.vanillaice.com/webmasters/hype/mrc/mevi.htm
-this site has good diagrams for the wiring
that's all you really need to know...yes its worth it, i have the mevi, ypipe, hiflow cat. custom 2.5 catback exhaust with apexi n1 muffler and place racing cold air intake and its awesome with the mevi. if you have any questions...pm me or hit me up on aim....Jodeci541
Tony
i installed my mevi, it was my first major thing i've done on my own...give yourself a 3-4 hours if you aren't that familair with your engine bay...and dont' rush when doing it, cuz if one thing isn't tight enough or placed right you could get yourself screwed with a vaccum leak.....the actually bolting it on isn't hard...preping the mevi, use loctite on the tiny screws for the butterfly valves, put a dab on the threaded part of the screw, don't put it in the hole then screw the screws in, you will get thread lock (like i did
![Frown](https://maxima.org/forums/images/smilies/frown.gif)
next is the wiring and the extra parts....make sure you get all the extra parts and yes you will need them all....here is what you need:
-vaccum canister (nappa 11$)
-vaccum hoses (15$ worth)
-vaccum solenoid off an 87 nissan pulsar (70-80$
-hook up wire from RadioShack (red, black, green 16 gage)
-spade connectors (also from Radioshack, should be blue and red
-30 amp switched relay (radioshack as well) its a small black box with for metal connections on it
-summit racing rpm switch and/or harlan rpm switch
www.vanillaice.com/webmasters/hype/mrc/mevi.htm
-this site has good diagrams for the wiring
that's all you really need to know...yes its worth it, i have the mevi, ypipe, hiflow cat. custom 2.5 catback exhaust with apexi n1 muffler and place racing cold air intake and its awesome with the mevi. if you have any questions...pm me or hit me up on aim....Jodeci541
Tony
#21
Originally Posted by Jade95Maxima
-vaccum solenoid off an 87 nissan pulsar (70-80$
-30 amp switched relay (radioshack as well) its a small black box with for metal connections on it
-summit racing rpm switch and/or harlan rpm switch
-30 amp switched relay (radioshack as well) its a small black box with for metal connections on it
-summit racing rpm switch and/or harlan rpm switch
You can get a solenoid (also called the map/baro switch in some posts) for like $5 from a junkyard of just about any car made in the last 20 years.
The relay is not a good in most peoples opinion, it is known for freaking out RPM switches and the solenoids don't draw enough current to fry the RPM switches so there's no real reason for it, not to mention it makes wiring more complicated for people like me who can't visualize electric circuits.
The harlan RPM switch is a joke, get the summit switch, no questions asked.
My first install took me about 10 hours to get it working as it should because I was doing the wiring wrong for quite a bit of time. The second install I did on a friend's car took like 2 hours. It's really easy once you know what to do.
#22
Originally Posted by Nealoc187
You can get a solenoid (also called the map/baro switch in some posts) for like $5 from a junkyard of just about any car made in the last 20 years.
The relay is not a good in most peoples opinion, it is known for freaking out RPM switches and the solenoids don't draw enough current to fry the RPM switches so there's no real reason for it, not to mention it makes wiring more complicated for people like me who can't visualize electric circuits.
The harlan RPM switch is a joke, get the summit switch, no questions asked.
My first install took me about 10 hours to get it working as it should because I was doing the wiring wrong for quite a bit of time. The second install I did on a friend's car took like 2 hours. It's really easy once you know what to do.
The relay is not a good in most peoples opinion, it is known for freaking out RPM switches and the solenoids don't draw enough current to fry the RPM switches so there's no real reason for it, not to mention it makes wiring more complicated for people like me who can't visualize electric circuits.
The harlan RPM switch is a joke, get the summit switch, no questions asked.
My first install took me about 10 hours to get it working as it should because I was doing the wiring wrong for quite a bit of time. The second install I did on a friend's car took like 2 hours. It's really easy once you know what to do.
thats the setup i am running, i have no complaints on the power and the wiring helped cuz my dad works with electronics a lot so that was no problem for me....tort just think it through and ask yourself what direction you wanna go with on yoru car.
Tony
#23
that's all you really need to know...yes its worth it, i have the mevi, ypipe, hiflow cat. custom 2.5 catback exhaust with apexi n1 muffler and place racing cold air intake and its awesome with the mevi. if you have any questions...pm me or hit me up on aim....Jodeci541
Tony[/QUOTE]
are you auto or 5spd? do you have an ecu?
i cant find anyone on here that has a auto w/ mevi and no ecu.
if that is your setup, do you notice any low-midrange power loss?
have you determined if the mevi made you faster in the 1/4
thanks
Tony[/QUOTE]
are you auto or 5spd? do you have an ecu?
i cant find anyone on here that has a auto w/ mevi and no ecu.
if that is your setup, do you notice any low-midrange power loss?
have you determined if the mevi made you faster in the 1/4
thanks
#24
Originally Posted by maximase86
There was one guy up here who wanted the MEVI on like right away. During the process, he some how manged to mix his return fuel line with a coolant line. No one know how the hell he did that....but he had a tank full of coolant!!!! Plus he's been plagued with problems with the MEVI not working right.
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