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Got VI confirmation that it is on it's way....

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Old 05-25-2002 | 12:32 PM
  #121  
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Re: Re: Re: Harlan quirk -- please take notice

Originally posted by Mishmosh


Not sure. If you look at Ian's dyno with a 5k rpm setpt, a dip (presumably from the valve opening) occurs maybe 120rpm or so later...
Remember that the engine is spinning very quickly and the time it takes the butterflies to fully open and the flow to equalize will take a little time and rpm. It's not going to be completely instantanous. The VEs and 5th gen VQs all have a slight dip upon switchover.


Dave
Old 05-25-2002 | 03:17 PM
  #122  
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Re: Re: Re: Re: Harlan quirk -- please take notice

Originally posted by Dave B
Remember that the engine is spinning very quickly and the time it takes the butterflies to fully open and the flow to equalize will take a little time and rpm. It's not going to be completely instantanous.
Dave
Makes sense. Thanks.
Old 05-28-2002 | 11:31 AM
  #123  
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Dyno

Did the dyno...was hoping for a little better numbers but otherwise went really well. I will start a new thread when Hype (who is doing me a big favor by posting my dyno on his site...Thanks Hype) Anywho, just some little info. Had a peak HP increase of about 8-12, but it seemed that my RPM Switch wasn't switching over until about 200-500 RPMs after the desired RPM.

An added note is that when I went...the dyno is actually at a Mustang place. And they said we were putting close to the V-8 mustangs that they normally dyno with heads and exhaust. They were also impressed the the bolt on collector had such a huge increase over stock. They couldnt' believe it. They were just standing in awe over the dyno. It was cool. I keep you guys posted.

-John
Old 05-28-2002 | 12:02 PM
  #124  
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Re: Dyno

How did you wire your rpm switch, off the coil or the tach?

My VI dyno had the same effect on the place I took my max to! The shop I took my max to dyno specializes in turbocharging VW's. Almost all work inside the shop stopped when the tech compared my baseline to the VI dyno on the computer. The general consensus was that for $600 the VI was a great hp/$ ratio.
Old 05-28-2002 | 12:21 PM
  #125  
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Re: Re: Dyno

Originally posted by speedtrip
How did you wire your rpm switch, off the coil or the tach?

My VI dyno had the same effect on the place I took my max to! The shop I took my max to dyno specializes in turbocharging VW's. Almost all work inside the shop stopped when the tech compared my baseline to the VI dyno on the computer. The general consensus was that for $600 the VI was a great hp/$ ratio.
I wired it off the coil. But, glad to hear that you had the same experience on your dyno. Yeah it totallly rocks. This was really cool.
Old 05-28-2002 | 02:15 PM
  #126  
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These VI manifolds are off of middle eastern and japanese vehicles, are all fo these 3.0L? Because I've seen valve covers with V6 2000, or V6 2500 on them, would that mean that the manifold ports are smalller than the 3000 ports/runners? Would this be the cause as to why the peak hp gains aren't noticed as much? Because the ME cars have 220 at the crank? Just a thought.

It was nice to see the Mustang guysd impressed with the numbers layed down.
Old 05-28-2002 | 02:21 PM
  #127  
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3.0L

Originally posted by NmexMAX
These VI manifolds are off of middle eastern and japanese vehicles, are all fo these 3.0L? Because I've seen valve covers with V6 2000, or V6 2500 on them, would that mean that the manifold ports are smalller than the 3000 ports/runners? Would this be the cause as to why the peak hp gains aren't noticed as much? Because the ME cars have 220 at the crank? Just a thought.

It was nice to see the Mustang guysd impressed with the numbers layed down.
The only one that will work for our car is the 3.0L collector...but they do have some 2.5L V-6 collectors that have circle ports that were also in the Max or cefiro. But the only ones that work on our car are the 3.0L. Hope that makes since. But, thanks for showing up at the dyno, it is always nice having another Max enthuasist there to experience the Mustang driver's expressions

-John
Old 05-28-2002 | 02:26 PM
  #128  
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Makes sense, geez you're car is an animal to say the least,

cant wait to get my 5spd in.

We should go to Roswell to test it out on the track.
Old 05-28-2002 | 02:31 PM
  #129  
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I think we can do that.

Originally posted by NmexMAX
Makes sense, geez you're car is an animal to say the least,

cant wait to get my 5spd in.

We should go to Roswell to test it out on the track.
I'm up for a Rosewell trip...do you know when the track is open??? Because that would be a lot of fun and I would like to see the 1/4 mile track times.

-John
Old 05-28-2002 | 03:12 PM
  #130  
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Originally posted by NmexMAX
Because the ME cars have 220 at the crank?
Do the ME cars have cats? Or precats? I'm guessing with the VI, and some other less restrictive exhaust flow, might account for the extra 30hp?

I mean the 5th gen's have 222hp, what different with them? Maybe the ME cars have similar changes that the 5th gen's have, but without the body change?
Old 05-28-2002 | 03:24 PM
  #131  
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I'm guessing that Cranman's peak hp is at 184-190hp,no? If so, taking the conservative estimate, 184hp, that tranlates to 184/0.83=221 crank hp. Not bad, since this is a full US emissions legal VQ with mods compared to the ME VQ standard Nissan motor, with probably much less emissions and ECU stuff to watch for emissions.

Anyone ever notice on ROadBeast's car his temp indicator ran much lower then on US Maximas. The temp gages hovers around the middle on our cars, but the ME maxima, it normally stays at about a 3rd way up. Maybe that has to do with something as well, concerning the differences.

DW
Old 05-28-2002 | 04:33 PM
  #132  
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I know it's open weekends for sure, I'll have to check for sure what hours etc. But yeah, I also remember road beats tmp gauge running real low, compared to ours. God I loved hearing that thing on the dyno.
Old 05-28-2002 | 09:30 PM
  #133  
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Jesus-H, what were your numbers, Mr. Cranman


Dave
Old 05-28-2002 | 10:23 PM
  #134  
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Originally posted by NmexMAX
I know it's open weekends for sure, I'll have to check for sure what hours etc. But yeah, I also remember road beats tmp gauge running real low, compared to ours. God I loved hearing that thing on the dyno.
It could also be possible that the collant systems in the ME Maximas are heavy-duty because of the high temperatures in that part of the world.
Old 05-29-2002 | 05:55 AM
  #135  
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You ever spent a summer in NYC or even Atlanta?? Very hot and absolutely killer humidity. I think Houston's like that as well. AC is not an option in those regions. It's an absolute MUST. I mention this b/c if our VQ is gonna be able to sit in rush hour traffic with the windows closed, blasting our AC without the cooling system breaking a sweat, I think it's safe to assume that we have
a very robust cooling system. Probably the same as the ME VQs.

DW

Originally posted by iansw


It could also be possible that the collant systems in the ME Maximas are heavy-duty because of the high temperatures in that part of the world.
Old 05-29-2002 | 07:42 AM
  #136  
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HP

Originally posted by Dave B
Jesus-H, what were your numbers, Mr. Cranman
Dave
Didn't want to post much because I wanted everybody to see the graph. But, Peak HP was like 143 with the VI closed and 154 with it open. But that was not SAE corrected. SAE corrected I'm looking at about 190HP peak when the VI was open.

-John
Old 05-29-2002 | 07:48 AM
  #137  
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Re: HP

A 40 HP correction upwards?? What altitude are you at?? How much above sea level?? My dyno was SAE corrected downards by 8 HP. I guess us NorthEasterner's benefit quite a bit from being at or near sea level.

DW


Originally posted by Mr Cranman


Didn't want to post much because I wanted everybody to see the graph. But, Peak HP was like 143 with the VI closed and 154 with it open. But that was not SAE corrected. SAE corrected I'm looking at about 190HP peak when the VI was open.

-John
Old 05-29-2002 | 07:48 AM
  #138  
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Re: HP

Originally posted by Mr Cranman


Didn't want to post much because I wanted everybody to see the graph. But, Peak HP was like 143 with the VI closed and 154 with it open. But that was not SAE corrected. SAE corrected I'm looking at about 190HP peak when the VI was open.

-John
Huh?

With my numbers SAE corrected, they went down, not up. I was 165 uncorrected, and 155 corrected.

This was at both Dyno places i went to.

How could yours go up? Not that I disbelieve you, I just don't understand....

IanS
Old 05-29-2002 | 08:01 AM
  #139  
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Re: Re: HP

Originally posted by dwapenyi
A 40 HP correction upwards?? What altitude are you at?? How much above sea level?? My dyno was SAE corrected downards by 8 HP. I guess us NorthEasterner's benefit quite a bit from being at or near sea level.

DW


About 10,000 give or take 1,000.
Old 05-29-2002 | 08:03 AM
  #140  
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Re: Re: HP

Originally posted by iansw


Huh?

With my numbers SAE corrected, they went down, not up. I was 165 uncorrected, and 155 corrected.

This was at both Dyno places i went to.

How could yours go up? Not that I disbelieve you, I just don't understand....

IanS
Because of the elevation here
Old 05-29-2002 | 05:02 PM
  #141  
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Originally posted by dwapenyi
This may be history in the making. John, your dyno may be the 1st 4th Gen Maxima to break 200 front wheel HP. Well, maybe not, b/c the VI seems to straighten or stretch out the power curve horizontally rather than vertically. Still very beneficial. Anyways, maybe you shoud re-name yourself ChuckYeagerMaxima


DW
I'm pretty sure I know of one N/A 4th gen to break 200 whp. To confirm, ask Cheston.
Old 05-29-2002 | 05:07 PM
  #142  
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Mr. Cranman, I read that you gained some HP with the VI...but what about your torque numbers?
Old 05-29-2002 | 06:47 PM
  #143  
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They both increase.

Originally posted by CalsonicSE
Mr. Cranman, I read that you gained some HP with the VI...but what about your torque numbers?
Max Torque doesn't increase...because the Max torque is before the 5000RPM range it is aroung 4500RPMs. But at 60000RPMs there is a 12 HP gain and 12 TQ gain...and by 6500RPMs there is a 25 HP gain and a 20 TQ gain. vs. without the VI... if you have the dynojet viewer I'll be glad to send you my results or if you wait about a day or so Hype should most likely have them up on his website (thanks again Hype).

-John
Old 05-29-2002 | 07:42 PM
  #144  
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can't wait

hey John,

Can't wait to see your dyno graphs...

and I can't wait to put my ME VI on too. 8^)

For you CA maximas, I've planned out the upgrade
so you only need the RPM switch and 2 relays.
No vacuum this, vacumm that... Cheaper, faster,
cleaner, etc...

I'll post once I finish my school project and finals
(also work fulltime). S*cks how everything piles
up after the 3 day weekend...

graph, graph, graph...
Old 05-29-2002 | 08:05 PM
  #145  
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Here's the http://www.vanillaice.com/webmasters/hype/mrc/mevi.htmDynoes. Sorry it took me so long to get them up, but the only time I had to make the spreadsheet was today at the airport

Here's my take. I would LOVE to have a JWT ECU with this mod due to the extended top end. The graphs with different VI opening rpms all look very similiar, but of course the curve is shifted around slightly. The strange thing to me is that there seems to be a delay between when the VI opens and when the dip occurs (around 200-400 rpms). 5000 still seems to be the best opening point, but the dip still bothers me I can't wait to install my VI either
-hype
Old 05-29-2002 | 08:17 PM
  #146  
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Re: can't wait

Originally posted by need4speed
For you CA maximas, I've planned out the upgrade
so you only need the RPM switch and 2 relays.
No vacuum this, vacumm that... Cheaper, faster,
cleaner, etc...

I'll post once I finish my school project and finals
(also work fulltime).
Yeah, please do provide the write up. That'll be great. Will it only be for the California emissions models? I think that's what you mean but
Old 05-29-2002 | 08:49 PM
  #147  
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Re: Re: can't wait

Originally posted by Toolrocks

Yeah, please do provide the write up. That'll be great. Will it only be for the California emissions models? I think that's what you mean but
Yeah I believe the CA Maximas already have some sort of rpm activated switch that can probably be tapped into. The rest of us will have to go the normal Harlan rpm switch, MAP/BARO switch, etc.
-hype
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