SHIFTPOINTS

SteVTEC created suggested shift points for optimal power on most generation Maximas. Since I haven’t seen any for VQ35 4th Gens, I thought I’d create something similar using the SteVTEC format.

NOTE: Chart based on my dyno results and a 7000 rpm cutoff

SteVTEC;s Thread

VQ35 4th Gen Shift Points


Conclusion: A JWT ECU with a 7,000rpm maybe advantageous with its increased timing, but the extended rpm yields no gain (other than useless 1st gear) on a VQ35 4th gen (with my mods)


Dyno Shootout

SteVTEC also created “Dyno Shootout” charts between Stock VQ30 USIM and MEVI intake manifolds. I have appended VQ35 4th Gens to the Dyno Shootout. Its not a fair comparison due to mods, but the intent is quantify my VQ35 results versus stock VQ30.

SteVTEC Dynoshoot thread


Dyno Shootout Results

HP:


TQ:


Statistical Data:

--Avg. Power-------VQ30 USIM------VQ30MEVI-------VQ35 (4th Gen)

2000-6500------------122 hp---------123 hp------------175 hp
4500-6500------------149 hp---------157 hp------------222 hp

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Key words there being "with my mods." With a better IM the picture changes I bet.


If we're doing that then the 00VI should be added too...


BTW, how do like your Aeromotive FPR? What pressure are you running?

 

SR20DEN's modified 2K2 intake manifold or a modified 350Z aftermarket manifold would improve the 6500-7000rpm range.

 

What do you mean a modified 350z manifold.modified in what way is what i mean?

 

Change the neck for the FWD VQ35 throttle body placement.

 

I don't have baseline VQ30-00VI Baseline dyno runs, but if I find one, I'll will add it to the list.


Aeromotive FPR serves its purpose well, no complaints. Pressure is set to 48psi at WOT to achieve a pretty flat ~12.7 A/F.


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Aren't the ports on the 350 manifold slightly off from the 2002 max motor?

 

the stock 350z IM flows way better then the 2k2-2k3 IM. Put a 1/2 spacer and you have even better gains. powerband is moved up to 6200 rpm instead of 5800 rpm. and the placement of the tb doesnt have to be changed. you can jsut route the piping and put a filter where the coolant tank is.
and the ports are different as well. the 350z ports are bigger. the maxima ports are screwed up. the first port,3rd port,and the 5th port are smaller diameter then the second, 4th, and 6th port.
i say the Z IM flows better then VI

 

Of course the Z IM flows better, it achieves 105% VE. Anything above 100% is forced induction, ie supercharging.

I haven't seen the 350Z LIM vs. the Maxima LIM, so you're probably correct.

 

There's always talk about a Z33 manifold... but, what has happened?

Emax tried it ...

 

in order to make the 350z aftermarket IM work with our motors...is to swap the LIM?

 

Does the LIM fit onto the block without modification?

 

If nobody has tried this yet I could, we just brought in a 350z w/ bad motor that I could play around with.

allen

 

why aftermarket? you can make the stock one work

 

If I were you, ie RWD VQ, I would run the OEM 350Z IM. If it clears the hood that is.

 

you guys make the hood clearence such a big issue. put a hood scoop where it doesnt clear. you guys are choosing apperance and looks instead of performance. and the placement of the tb of the 350z isnt a big deal either.

 

240SX yes, Maxima...hell no.

 

can you tell me how it works then?

 

Technically it would work, assuming the Z/G LIM bolts onto the FWD VQ35 head. But people are shying away from it due to having to modify the hood.

And as IceY2K1 put it, hell no to a hood scoop on a maxima.

 

peformance or looks? i will take performance any day. who cares if there is a hood scoop.

 

And I choose being .05 slower over a retarded looking hood scoop.

The entire point of modding a maxima is keeping looks low key and stockish. If I want a hood scoop on my car I'll by a '73 Firebird with the 455 SD and the giant hood chicken, not a maxima.

 

Hood scoops on maximas are teh gheyness.

 

i cant believe you guys.

 

There is a list of things I promised myself I would shoot in the cranial region before putting on my max. It's pretty short, but it includes hood scoops, spinners, giant aluminum spoilers and last but not least, lambo doors.

 

Haha...lambo doors.

 

It's not worth it for me to look like a toolbox ricer in order to gain a tiny bit of horsepower. Different people have different priorities.

 

hood scoops that are functional are not gay in imo.

 

Well, why haven't you done it then?

 

Gonna have to agree here. It certainly wouldn't look too great though. I suppose someone could also try and fabricate a DSM-like "hump" in the hood... E46 M3s had the "power bulge" or whatever as well. You could get it to look decent somehow.

 

Well I just ordered a 350Z lower plenum..

 

This should be stickied.

 

about the lower im for the 350z.Im thinking that it will be the same as the maxima one, unless it's the new rev up motor those are different I'm not sure though so dont hold me to it.I'm gonna mess around with it in the next few weeks.just look at it like this people said a 3.5 swap couldn't be done for cheap.Its only a matter of time b4 someone figures it out.I give it till the end of march till it becomes offical.Nuff said!!!IMHO

 

Why Z injectors?

Oh and about the Z upper, check out my sig.

 

IIRC there different designs.I'll check up on that.That IM design it would work but the reason why it might not fit is becuase the left side is higher than the hood is when it is closed.<this is my thought i could be wrong.

 

Yeah, the last person I recall fitting the Z manifolds on was Emax (Ethan). Hopefully my custom upper plenum fits

 

350z injectors and 5.5 gen injectors are the same shape and can be physically interchanged so I see no reason why 350z injectors would be required.

 

yes your are correct my bad.my goal personally is to figure out to get the upper im to fit under the hood.I think I've figured out a really good way and still look stock to the untrained eye.

 

Stock 315 cc are enough for 300+whp.

 

nice work. This should be stickied.

 

350z injectors flow more then maxima