Thread: :( got skool'd

lol everyones confusing me... i have a hot shot header thats going to be ported an possibly fitted with a 2.5" flex tube and pipe to the cat.. now do i go 3" or 2.5" theres so much going on here my heads spinnin

next year im gonna try to get the budget header.. an possibly n1's.. i dont really wanna switch exhaust next year.. but if i have to i have to.. but i want something thats going to work good for now, an not be uber loud.

So how do u explain the shape of this collector?

Nissan/Infiniti Headers

Peace

We don't get the SSAC header down here in NZ, I have Fujis with the secondaries shortened to 14 inches long. Prior to that I had a Burns Collector with 2.25" choke welded onto the Fuji secondaries but that killed a lot of power as the choke was spec'd too small by me. Previously I ran a full 2.5" mandrel bent system. It has been proven over & over on the dyno that our best power is made with a 3" exhaust & having tried & tested 2.5", 3" & a combination of both I agree that full 3" or 3" to the rear muffler is the way to go for max power.

The collector choke aids power by creating velocity that helps to draw exhaust gasses away from the engine, if you spec it too big, too small or do away with it altogether you lose power.

the real potential with the VE's is unlocked with a proper tune.
Tuning with an safc or calum basic (from what I know about these ecu's) will never bring out the potential of the motor.

Throw in some n1's, good header, and better intake and the DE will be left behind

Actually as we are talking about back pressure (created by pressure drop along the exhaust pipe) it does make sense. Pressure drop is higher in a smaller diameter pipe but it increases and is directly related to the length of the pipe. Just because one section is smaller doesn't mean you won't benefit from having the bulk of the exhaust a bit wider.

lynchfourtwenty doesnt seem to be the only one being schooled

hehe :P

Thats what I am here for..to learn
Thanks for correcting me on that
I know I posted "3 inch collector" but I meant the size of pipe where it meets the cat...midpipe,or downpipe whatever
I thought the fuji was a 3" ...my bad

I never claimed to be an expert on header or exhaust design,or flow...I just posted my opinion hoping for some feedback...It worked

Finally someone WHO KNOWS what they are talking about. Alot of these guys get a basic VE setup and expect it to just blister a DE. A good de motor is fast. I am glad somebody who has a VE can admit it is EXPENSIVE to do a VE up.
Good post borngearhead! Post some pics of your maroon car up!

well what doesnt make sense to me, an go ahead an correct me on this, but it doesnt make sense a a stock ve would lose to a stock de, im not talkin a built de im talkin bone stock.. 187hp vs 140 hp i mean come on.. now i know i am lacking a good exhaust and i have some leaks, that will all be takin care of soon, i'll run my friend again.. an post results