confused on cai

[soop]

yea placebo is the word i was looking for lol.

"Improve everything between the airbox and the intake valve and you'll be on a winner."
im assuming the larger TB is a start, then i guess larger diameter piping between the maf and TB is a good direction to go in???

Well, I was playing around modifying inlet plenums a while back. Don't see much point using a larger TB when the internal port on the manifold is filled with casting flash and about half the ID of the TB.
If you change the intake pipe avoid anything with corogations.
After all that effort you'll probably still notice bugger all difference.

 

[VUte89]

ahhh so you could have the biggest throttle body in the world but it doesnt matter if the plenum inlet is still the same size is that what you mean

 

[soop]

Pretty much, again another thing people will dispute. Most of the time these people are the very same people that pay hundreds of dollars for "CAI" setups they could make themselves for $40.

 

[VUte89]

it makes pretty good sense actually so if i was going to makw my own the basic rule would to be to let as much air a possible flow smoothly in and then happy days

 

[soop]

Basically.

Consider the air a milk shake, the intake tube a straw and the engine, you.

How hard is it to drink a milk shake through a spiral straw?
Before you jump into pulling things to bits good "fluid Dynamics" and have a quick read of the basic principles. From there on you're apples.

 

[Brett_jjj]

Just matching the inlet manifold runners to the inlet ports on the heads makes an improvement.A couple of the inlet runners in my VS ecotec had a fairly big overlap where they join the heads which was half blocking the ports and impeding the flow.I matched the runners to the ports in the heads, and to the plenum where there was also slight overlap in the joins.I used a rat tale file and emery paper,but a die grinder would make the job easier.I mainly noticed a bit smoother idling and running.It might also be worth a kw ot two,I didnt really notice any difference in power.

 

[soop]

You wont notice much power difference with most modifications to a v6 though. So every little bit helps.

 

[VUte89]

you have quite a way with words haha thanks for all your help soop

 

[Brett_jjj]

You wont notice much power difference with most modifications to a v6 though. So every little bit helps.

Yeah,the best and cheapest mod Ive done so far that has made the most difference on the V6 would be changing the timing maps on the memcal.Bumping the timing up noticeably livens them up a bit.Ive tried heaps of different timing settings and Ive got it going pretty good now....A decent cam and higher compression would be the mods I would be doing if I wanted to really bother with it.Been there,done that years ago with the old V8's.It really doesnt worry me as much these days,theres nowhere around here to use it anyway..

 

[TrikkBen]

Its not the nitrous that burns,nitrous is a non flammable gas,it just makes the incoming air more dence for a bigger bang.And I think its N20.

Thats not what happens in Fast and Furious, Vin Diesel pops the ciggie lighter and the car EXPLODES!! You're wrong Brett, where are you getting your information...