Hey I have a V2 with a 2.87" pulley and nameless other goodies, wondering whether the ME VI would have any benefits or even adverse affects, opinions? Thanks.

 

MardiGrasMax has a supercharger and the MEVI and got better gains then the NA guys.

http://forums.maxima.org/showthread....hreadid=128806

 

Since all mods usually work better on boosted cars I guess the VI would have the same effect. It would work just like on normal engines...

 

Mardigras, what differences did you note when the ME VI was installed? Thanks.

 

On an RPM dependent SC like the Vortech SC (and all centrifugal SCs) a mod like the VI would be huge... and is, as you can see from Matt's dynos.

 

The gains would be good after I believe 5000 RPMs, it will help out your top end. Little Mods do help us out alot. I just did a $35.00 Mod to my car and all I got say is good god ooooh mighty that added a little bit more HP...

 

come on jay share

 

Here ya go.

Switch over set at ~5600rpms. Imagine what that chart would look like if I took it to the rev limiter

 

Switchover - is that the rpm that is used to activate the VI? You found better results than using the 5000 recommended switchover point?

 

Th optimal switchover point is more like 5600rpm, not 5000.

 

hey, i'm kinda new to Dynos, just a question, if the MEVI is the red line it seems to lag in horsepower across the powerband until it gets to ~5400 and then it kicks in, does that mean, I would be losing power at other rpms according to the DYNO?

Thanks.

 

Yup

On VQ30DEK's 5k may be the recomended point for a stock motor but on my car I found that ~5600 worked best. Its really a car to car thing and only dyno time will show what works best for your set up. I still think that some of the VQ30DEK-SC guys should try playing with the switch over points, because they may gain more power in the mid range.

 

Try and read the typing on the dyno?

 

The red line is the VI open the entire run, the blue line is with the VI closed the entire run. You would use a RPM switch to open the VI at the appropriate RPM (in this case about 5400 RPM), giving you the best of both power curves.

Is the switchover point higher because of boost or does it just vary engine to engine? On the most recent NA dyno I saw (Mishmosh) it looked like the optimal point would be around 5200-5300 RPM.

 

thanks for the explanation, I understand now, one more question, is the switch to turn on the ME VI automatic or do I manually have to switch it on when it gets to a certain RPM? I hope its auto since I have a 5spd and it would a pain in the a** to switch it manually.

 

You just buy an 'RPM switch' to activate the VI. If you read through the other Variable Intake threads you will find plenty of information on how to hook it up.

 

Mardigras-

Is the plot posted truely a two runs with the MEVI closed the entire run and the none run with the MEVI open the entire run? I hope so because your car is loosing 20fwtq and nearly 20fwhp in the midrange which is significant to us NAers


Everyone-

Keep in mind that Mardigras Max is SCed therefore it has an artifical atmosphere. All SC 4th gens make power past 5400 vs the NA cars that weesh after 5400. This because the SC overcomes the normal atmospheric pressure in manifold and increaes it therfore making more use of the stock manifold runners. With the VI the SC becomes even more deadly. On a NA car, a 5600rpm switch over seems way too high. I'd say 5100-5200rpms. I'll be experimenting with my VI on the dyno when I get it installed shortly (within the week).


Dave

 

Has anyone done this type of dyno testing with NA cars? With the MEVI open/closed for the entire run.

 

One run full open and one run full closed for the entire pull.

 

Yes, speedtrip did. It's posted in this forum.

 

- The switchover is automatic if you have an rpm-activated switch. Every time you rev up to or past that point, the switch does its thing and allows the MEVI to go to the shorter runners.

- Thanks for posting the dyno, Mardigras Max... very nice stuff.