Would you get noticible gains with the 3.5 tb or should I go with a larger tb, lets say a q45 tb? Also, if the 3.5 is worth it, how would you by pass the electronic drive by wire?

Whats the stock size of the VQ30 tb? I know the Q45 tb is 90 mm... and is it possible to mount on of these on a VQ30?

 

i dont thinkyou can just bypass the drive by wire

isnt a q45 TB someting like 90mm. it would proboly be to big

 

Drive-by-wire is probably easy to remove and attach older 5th/4th gen TB spool.

IACV is the problem and probably TPS.

 

I dont think a 2000 Max has DBW

 

It would be easier to use a non drive by wire 3.5 throttle body from a Pathfinder.

 

But what year I been scouring for a clear definate answer but never is a year given hehehe. I think it's the 2001 Pathfinder VQ35 TB that works on the Max's VQ35 IM isn't it? Also isn't clear yet if it's a direct bolt on or if adapter plates are needed.

 

2001 3.5L Pathfinder (>08/00). You'll need an adapter plate for a DE, DE-K, or MEVI.

 

Is this the same adapter that places the pathy tb on a 3.0 USIM?

 

No, the 00-01 needs a differ adapter plate for the Pathy TB than the 4th gens.

 

Sorry, I didn't mean to imply the plate was the same for DE, DE-K, or MEVI... just that you'd need "a plate" to fit the TB on any of those manifolds.

 

im just wondering what kinda of gains would a swap like this produce? and where to find adapters for that kinda swap, does it have to be custom made?

 

i'm in the process of doing this modd. stephanmax is making the adapter plates for me while i search for the tb. he sells them for $100. try pm'ing him

 

does anyone have an idea of what kinda gains it might produce and also if i were planning on doing turbo to my car in the future would that be a problem being it would have more intake air flow?

 

a larger TB 70mm (3.5L) would only be beneficial to a turbo/sc setup

more air into the engine + more fuel = more power.

now imagine how much air would flow at a time through a 60mm tb and then a 70mm tb.

but using a q45 tb will ruin your engine responce because of flow. air flows faster through a smaller diameter hose than a larger one (physics) if you go too big air will flow very slow (vq30 engine vacuum is not like a 4.5L v8 vacuum) and you won't be putting more air into the engine

with a PF tb or vq35 tb you will increase engine responce.

 

Ok i see what u guys are saying by putting more air in, but waht about gains what kinda gains would it show 1-5hp? anything like that? also would it be an easy swap with having the right adapter for it all ready?