They both have gains, why arent companies making them

 

If there is a demand --they will --If the demand is for something that people will figure is useless, they wont -- The Z has very good induction

 

its just another bolt on... its being demanded

 

this will make at least a 3-8hp gain.





















so maybe if this flys people will wonder why they don't have it yet// lol

 

My Point thats muddled with the Physics of my explainations

 

ok but the tb designed for the 350z vq35 was designed for a stock engine. not a free flowing bolt on z. or even a turbo more pressured engine requiring

it will make a difference

 

How about you produce one and sell it, then the problem will be solved.

This isn't a 5.0

 

It is not a "bolt-on" on our cars and it is not demanded by anyone but you.

op, ur starting to get annoying. +1 on what app6mt said, or buy a generic one and do the drive by wire to cable conversion if ur so passionate about it.

(bottom line--you're not going to find a larger tb specifically designed for the vq that will be plug and play--it simply does not exist and never will imo). U'd need to do a lot of work to make a generic one work on our cars (drive by wire to cable conversion, engine management, work to the manifold and intake tube, etc. ) and the cost and effort is not worth the benefits it may have. And where do you come up with your 3-8 hp gain? Even if that was the case, it would't be cost effective.

The world doesn't rotate around your needs. And the throttle body is NOT a restiction on our cars. You'd get better results doing port/polish on the heads

 

Unfortunately the TB feeds the plenum [used to simulate a free open volume of air from which runners are fed. Google: Helmotz Resonation

The question is how much restriction to runners does a lower pressure plenum [say 1/2 psi [14.2 vs 14.7] create WHEN the valves also create a 1/2 psi restriction so that the cylinder is filled from 13.7 psi pressure.

1.0 psi is roughly a 6.8% restriction 13.7/14.7 = 0.93197 or 6.8%

 

3-8hp is just bs. it was made to be a bs assumpumtion

take aceman for example.

he had somekind of work done on his throttle body.
he had gains from doing so.

why wouldn't we look for every ounce of horsepower.


this whole crowd always throws out good ideas...

chill out 30yrold life-over, losing my hair, and bitching about young kids owning my car.

chill out,,

accepted it as a bolt on. ****

 

you must hate yourself .

dont read the thread if your annoyed

 

Why don't you ask yourself this same question again noob:

The DE engines have been out for 5+ years. There is a reason why no comapny has made a larger throttle body specific for the VQ.

So it looks like your options are either make your own and diy like aceman or stfu.

/thread

 

IF you bore your throttle body out past the 72mm then other parts become the bottle neck. Then you need to look at other parts of the intake system.


Here is a thread i created with the demissions of all the intake parts.

https://my350z.com/forum/intake-exhaust/223208-larger-maf-housing-intake-pipe-and-tb-installed.html

Stock figures are:

Maf ======== 72mm
Intake pipe ===72mm
TB ==========70mm

So, a larger throttle body by itself is not going to create huge gains. You need to increase all the parts involved.

Later
Todd

 

I dont even think its possible to go past 72mm and still have the stock drive by wire work on the stock throttle body - I recall reading something to that affect at one point. At that point a new throttle body would be needed

In the coming months I'll be playing with a bigger drive by wire unit, but its not something I am rushing to do at this point as I'm surely not even at the limits of the stock one yet

 

That is probably accurate on an NA motor. It comes down to dollars per HP. How many dollars are you willing to spend to get 3 hp? Also, a manufacturer of a "mod" considers fabrication cost per unit per potential sale. This would be a small market mod....A lot of folk don't even know that opening the TB would create NA gains. They look elsewhere for the 3 to 8 HP, i.e., opening the exhaust, adding a popcharger, etc.

 

ok what if a 69mm tb would be better shown by dyno charts. or even maybe a 71mm tb would be better to your setup.

we wouldn't kno/ would we.????


i always hear alot ppl say tuning is the key.
A LARGER TB would make a difference




Anyways would you rather have 230hp or 234hp?