i noticed that the Greddy Emanage Ultimate is supposed to be able to adjust the rev-limit cut-off. I figure since the stock VQ handle some high boost levels running the rev higher on a N/A should be no problem. The redline goes from 6.5 to 8. I have scene posts mentioning raising the rev-limit to 7,200, but if I wanted to go closer to 8 or even if I don't, should I get an oil cooler?

 

Krismax would rev to 8K without one when he had a 3.0, IIRC.

 

Power handling and rev handling don't have anything to do with the other. Hondas can handle tons of revs but not much power, diesels can handle tons of power but not many revs. No one has gotten the Emanage Ultimate rev limiter function working on a VQ yet. More research needed.

 

thats why his oil pump blew up, way to many revs.

7200 is plenty high enough for a VQ weather it be 3.0 or 3.5, even with a VI. there is more than just oil to worry about at high rpms, ie: valve float, main studs/bolts ect.

if you want a high revving motor, build one.

 

Like Neal said, what the valve train can handle as far as revs and what the motor can handle as far as power are two different things. You need to ask your self if your even going to be making enough power up to justify reving that high.

 

well, i was thinking by the spring maybe I could start doing some bracket races so I figured a higher rev would help out.... i know the Emanage Ultimate still has kinks to work out, but it will happen sooner or later or Greddy is going to have issuse mass refunds.

 

I'd swap in a 2005 Anniversary/Track model VQ35 oil pump for some peace of mind, since their rev-limit is 7200rpm.

 

Is it really 7200rpm ? because i keep seeing 7k but is the cut at 7200?

I take the 3.5 past 7500rpm at the track and the better oil pump is doing good ,the 3.5 has a oil cooler but a diff type than usual.


And mike i wouldnt say past 7200 isnt useful ,did you get a better ET yet

 

I've seen 7100rpm and 7200rpm...not real sure.

 

I thought it was 7100 for the anniversary edition.

 

Is this the 350z your talking about? If so is it possible to use the 350 ECU to get the higher rev's?

 

So, does the EU not work on the VQ30 for sure, or are we still waiting for someone to try it?
Tim

 

Yes.

No, but TechnoSquare can change your limiter.

 

Hmm, Got a link to TechnoSzuare? I don't really want to rev much higher but hate accidentially hitting the limiter before a shift. Would be nice to drive the same but not have to worry about the limiter.

I'm guessing the Yes wasn't to my ?. and the No was for me, right?

 

http://www.technosquareinc.com/


Yes.

No, but TechnoSquare can change your limiter.

 

Didn't say it wasn't useful, just stated that power needs to be made that hight in the rpm range for it to be useful.

Went to the track again with a set of MT ET streets from a friends 350Z, but they did not fit right...rubbing the caliper and couldn't get them centerd on the hub. So never got a good run on them

 

First prove to yourself that you're making power, and it still shows signs of climbing @ redline .. that will justify adding a higher rev limit.

If using a 3.5L to rev that high (7k+), get some upgraded rod bolts.

Just because the tach ends @ 8k, doesn't mean you have to .. but that's getting a bit out of hand for a street driven VQ ...

JWT or TS will give you the rev limit you want ... TS more so with a 3.5L ECU .. as they haven't worked out the bugs 100% on 4g models just yet..

JWT will give you so much grief and put a disclaimer on your ECU for anything over 7k

In order to be making power to justify the extended rev limit would be a list of mods, including boost, cams & VIM's .. or a combonation of them

 

From the dynos I've seen, it's 7000. However the tach is inaccurate. You can see as high as 7400rpm before tapping the limiter. My G has a true 6600rpm limiter yet I can take the tach to an indicated 6900rpm before tapping it.

 

I find that weird that a new car is off that much ,because when i go to the magic 8000rpm mark my car shuts down at about 7950rpm

 

You've got OEM diameter wheels/tires Chris?

I know my tach is off 400rpm or so...

 

I think most if not all newer Infiniti/Nissan vehicles are off far worse than the older models.

My 4th gen has a limiter of 7200, and it's typically right on .. My 03 marks 6900 and is actually only @ 6550 ...

 

My 95 with my stock ECU is like 6700-6800 before it hits, but when I put my friend's JWT ECU it is 7200 on the dot.

 

has anyone tried to use a 350z ecu in their 5.5 gens and it not work

 

The 350Z/G35s use the same ECU connector, but it's different then the 5.0/5.5 gen ECU connector.

 

Is it possible to just change the conector? Anybody know about the 6th gen ecu/connector? Is it the same as 5.0-5.5 or 350-G?

 

With enough time on your hands for some serious rewiring...yeah maybe.

Worth it? No, not when you can easily ship yours to TS to be reprogrammed.

 

The new G sedan is claimed at like 290hp right. I'm sure most of nissans numbers are **** but I know the 3.5 is tuned down quiet a bit. The big hp differences can't be all in intake and exhaust, I bet the tuning has alot to do with it. But ya wiring that would probly be a *****