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Full VQ35DE in 4th gen with 4th gen ecu

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Old 12-23-2004, 07:51 PM
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Full VQ35DE in 4th gen with 4th gen ecu
Well its finally complete heres the link http://forums.maxima.org/showthread.php?t=364779
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Old 12-23-2004, 07:59 PM
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Sweet, good stuff.
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Old 12-24-2004, 06:02 AM
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Originally Posted by dmontzsta
Sweet, good stuff.
You just dont know how good it is
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Old 12-24-2004, 07:20 AM
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more innovation... congrats.
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Old 12-24-2004, 07:23 AM
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Originally Posted by TILLEYS99
You just dont know how good it is
You are right, maybe some day I will though. As soon as you do a write up I will go bolt it in and know.
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Old 12-24-2004, 08:45 AM
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how are the VTC's and VI being controlled?
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Old 12-24-2004, 09:07 AM
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Originally Posted by MrGone
how are the VTC's and VI being controlled?
Who needs em
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Old 12-24-2004, 09:22 AM
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no wonder your dyno seemed low
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Old 12-24-2004, 09:34 AM
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well pics are up on the link.

What do you mean dyno was low??? 226whp is more than 3.5s are doing stock
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Old 12-24-2004, 12:20 PM
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maybe you should research things before you speak. Im using a 3.0 chain and it doesnt need VTC it basically only helps low rpm performance. VI is not needed at all believe me. Both of these things will mostly improve low rpm power and what do i need that for i cant hook so as it is.
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Old 12-24-2004, 04:23 PM
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Is this the motor with the VQ35 bottom end and the VQ30 heads and such? If so the 'full VQ35DE' in the title was misleading for me.

Even if it is the full VQ35 from intake manifold to oil pan, it just doesn't seem complete without functioning VTC's. I do need to research the VQ35's setup, but I know on the VE you loose a good ammount of highend and/or lowend if the VTC's are not setup correctly.
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Old 12-24-2004, 04:29 PM
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VQ35 everything, 4th gen ECU, wriing harness, and Timing chain cover.
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Old 12-24-2004, 06:16 PM
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excellent job!
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Old 12-24-2004, 06:48 PM
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Originally Posted by TopElement
I've researched as much as you've posted. The title suggest a "Full VQ35DE", but without VI or VTC's it's pretty much a bigger VQ30DE. In the gears where traction is available, the added power wouldn't hurt. So, although you may not need them, it's no question the performance can still be better.
Full VQ35 with 4th gen ecu is not possible using the VTC. VI is just uneeded just ask the guys running 3.5, Sr20den has no VI, and whats he putting down???260+
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Old 12-24-2004, 07:29 PM
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Originally Posted by TILLEYS99
Sr20den
I dont think he wants us talking about that


have any info on the VQ35 VTC's? If it's anything like the VE you can run it based on RPM, although like the VE's power valve, it is better to just let the ECU deal with it since its load based.


regaurdless I admire all the work you've put into your car and research


edit: are the VQ35's VTCs on the exhaust cams only? VE's is on the intake cams FWIW. I never really looked into it much since I dont have one nor have any friends who do to tinker with.
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Old 12-27-2004, 11:39 AM
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good job tilley !
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Old 12-28-2004, 12:35 PM
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Originally Posted by MrGone
no wonder your dyno seemed low
How do you know its low he hasnt dynoed that setup yet...you must be a time traveler
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Old 12-28-2004, 01:52 PM
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Cant you just wire op the VTC to an RPM switch so it actually works?
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Old 12-28-2004, 01:54 PM
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Originally Posted by MardiGrasMax
Cant you just wire op the VTC to an RPM switch so it actually works?
It is continuous.


Tilleys: What exhaust manifold/y-pipe are you using?
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Old 12-28-2004, 11:45 PM
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wow, i want to do this to my car. hopefully in the near future, not too long away!
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Old 12-28-2004, 11:56 PM
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holy damn... awesome man.....
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Old 12-29-2004, 01:04 AM
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Rob, great job...
We must go to the track as soon as the weather gets warmer...
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Old 12-29-2004, 02:02 AM
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Good job Tilley
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Old 12-29-2004, 03:57 AM
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Great job man! After seeing it and riding in it I am in awe
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Old 12-29-2004, 06:10 PM
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Originally Posted by TopElement
The engine needs them, that's who. The whole benefit of this engine comes mainly from those two features.
Really? I thought it was the extra 0.5L!

As already stated, the VI and VTC is mainly for improving low-end responsiveness, and will help the automatic guys more who have longer gears where the engine will be at low revs more of the time. Good God though, put a torque monster VQ35DE in a lightweight 4g body with a manual and you have a beast on your hands. Believe me, you don't need the VTC's or VI.

Originally Posted by TopElement
It's like doing a VTEC swap, but leaving VTEC disabled.
Your analogy isn't really a good one. A better one would be swapping an MEVI or 00VI onto a 4g VQ30DE, but then always leaving it in the low-RPM profile. It defeats the purpose since the whole purpose of those is to improve the top-end, like VTEC. You're never changing displacement. But a VQ35 into a 4g has a lot of purpose. More power! VI/VTC or no VI/VTC, you're getting a ton more of it and that stuff has nothing to do with it. The displacement does.
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Old 12-29-2004, 06:11 PM
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Nice work Tilley!

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Old 12-29-2004, 06:33 PM
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Originally Posted by Nismo3112
It is continuous.
Yes, but just switch it over with the VI. If it is frequency controlled or voltage controlled item that would be easy too. Why cant it be done?
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Old 12-29-2004, 06:37 PM
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What about the 4th gen cam pos. sensor? Doensn't the engine need that to run?
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Old 12-29-2004, 07:49 PM
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I know the import world hates to hear it and likes to fight it but "no replacement for discplacement" PERIOD.
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Old 12-29-2004, 11:18 PM
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Originally Posted by dmontzsta
I know the import world hates to hear it and likes to fight it but "no replacement for discplacement" PERIOD.
My car is at tilleys now we will see what it does for my 13.8 ,when i race it this spring.

I believe men will weep and women will love me.
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Old 12-30-2004, 10:40 AM
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Originally Posted by krismax
My car is at tilleys now we will see what it does for my 13.8 ,when i race it this spring.

I believe men will weep and women will love me.
lolol kris you amuse me to no end

as for the VI/VTC, i have no clue about any of that, all i know is that 1st and 2nd are absolutely useless.....and thats the way i like it, it reminds me of tilleys 12 second 92 se-r
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Old 12-30-2004, 01:47 PM
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Originally Posted by emmas97
lolol kris you amuse me to no end

as for the VI/VTC, i have no clue about any of that, all i know is that 1st and 2nd are absolutely useless.....and thats the way i like it, it reminds me of tilleys 12 second 92 se-r
the se-r owned all.........
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