So lets talk about manifolds.

 

To spool a turbo don't you want evenly spaced pulses of exhaust gas hitting the power turbine? So on an evo or the like, you get a one of those octopusses orgy looking manifolds. That makes the pulses from 1-3-2-4 arrive as a constant rhythym through varying the pipe lengths?

 

I think I have heard the contrary.

Equal length manifolds are of importance as I understand but the octopus layout as you say would be a nightmare in our cars.

Ive just seen the firing order it is 123456, that isn't what I expected. So the 3 pulses are going to arrive almost in one lump. That will add torque right, so at low revs it is getting "whack... ...whack" rather than a flowed "pop-pop-pop-pop-" that would give top end right?

Ive just seen the firing order it is 123456, that isn't what I expected. So the 3 pulses are going to arrive almost in one lump. That will add torque right, so at low revs it is getting "whack... ...whack" rather than a flowed "pop-pop-pop-pop-" that would give top end right?

it will arrive in sequence equal length is important to maximize this so take 1 manifold and you will 1 3 and 5 arrive in sequence to spool the turbo constantly if its an unequal length the you get the chance they all arrive at the same time instead of a smooth constant pressure

I don't really know what shape the stock manifold is, I thought it was kind of linear 1,2,3,-turbo.

 

That aside, divorced downpipes then, so is that after the turbo? Thats the wastegate gas and turbo gas in 2 bits of pipe???

I don't really know what shape the stock manifold is, I thought it was kind of linear 1,2,3,-turbo.

 

That aside, divorced downpipes then, so is that after the turbo? Thats the wastegate gas and turbo gas in 2 bits of pipe???

 

stock manifold is log style so they could arrive all at once in theory but that said it is the sam with all factory turbo cars pretty much

 

That aside, divorced downpipes then, so is that after the turbo? Thats the wastegate gas and turbo gas in 2 bits of pipe???

 

a large bell mouth is the most ideal i feel same as jaffa is selling at the moment and divorced wast-gate is most beneficial with external wast-gate

 

this is why exhaust size is important in order to get turbo gas and wastegate gas out without any problems

Awesome, nice to learn or at least check you're right about stuff. The jargon and terminology that surrounds these cars and tuning is boggling, I'd hate to be the guy that keeps saying... er... VVTI, thinking it stands for Very Very Turbo Indeed.

 

Variable valve timing inteligently controled (I hope)

My divorced downpipes are tiny, I always wondered why they would be so small, I guess what your saying earlier explains that.

Awesome, nice to learn or at least check you're right about stuff. The jargon and terminology that surrounds these cars and tuning is boggling, I'd hate to be the guy that keeps saying... er... VVTI, thinking it stands for Very Very Turbo Indeed.

 

Variable valve timing inteligently controled (I hope)

valve timing can be used to increase spool of turbos and torque by advancing the timing low down ie as our inlet cams do or if you run a standalone ecu you could add it manually to a certain degree but then the reason it turns of is to much timing will cause detonation at the top end killing the engine so that way you make the power at the top but get better midrange that you wouldn't normally see

valve timing can be used to increase spool of turbos and torque by advancing the timing low down ie as our inlet cams do or if you run a standalone ecu you could add it manually to a certain degree but then the reason it turns of is to much timing will cause detonation at the top end killing the engine so that way you make the power at the top but get better midrange that you wouldn't normally see

 

Your awnser here .now tires in to my new thread talking about tub and ebcs turned of. Because on my ebc it also says that it is a electronic valve contoller. Just to confuse the issue. Sorry guys.

The gases coming off the exhaust turbine are spinning in a circle at a very high velocity, are very hot and still expanding. If those gases enter

a larger volume (as in old stock downpipes) they create turbulence slowing the exhaust velocity. When the internal wategate opens this creates

even more turbulence which further slows the exhaust velocity.

 

The idea behind all the split downpipes (SZ/Dupree 1st gen splits, 2nd gen Super splits and 3rd gen 3" downpipes) is to keep the exhaust turbine

gases entering a pipe similar in diameter to the turbine. This minimises turbulence and together with seperating the wastegate gases (for as long

as possible) speeds up the velocity of the exhaust gases and enables the turbos to spin up sooner and make more power.

Your awnser here .now tires in to my new thread talking about tub and ebcs turned of. Because on my ebc it also says that it is a electronic valve contoller. Just to confuse the issue. Sorry guys.

your ebc is just an electronic valve to increase the boost and uses a valve electronicaly powered it has nothing to do with the engine aside boost control when its on it incresaes boost when turned of you get factory boost

am looking at using this down pipe http://www.z1motorsports.com/product_info.php?products_id=3359

Personally I think ams is crap quality and they do no R&D, just rip off other products, and poorly at that

Personally I think ams is crap quality and they do no R&D, just rip off other products, and poorly at that

 

r&d? who else makes 3 inch down pipes?

Buy jaffas pipes he has

 

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there nice but just to much money.

You get what you pay for in this game

 

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I know but 900 rips is a little rich for me there has to be a other down pipes that works well for less money

Speciality Z is the original source for 3" downpipes

Not like those my whole exhaust took 40 hours to make for comparison

 

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Speciality Z is the original source for 3" downpipes

 

just looked so the ams are just copys then

 

- - - Updated - - -

 

Not like those my whole exhaust took 40 hours to make for comparison

 

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is it made out of gold ?

AMS design nothing, it's all just copies if stuff that's been mass produced in china. There not alone there though, several companies here do that, just look at the adjustable suspension parts, a lot of it is the same stuff rebranded.

AMS is cheap but as said the quality isn't there, manifolds with holes in them, exhausts that don't even remotely line up the list goes on, this wouldn't be so bad if they sorted out the faulty ones, there after sales is notoriously awful! Essentially if you buy anything AMS you run the risk of wasting your money, that said many have there manifolds, downpipes etc with no problems...

Before buying please note: AMS = Alloy Toyz = Z32 Innovations.

I remember a couple of group buys on the AMS manifolds a while back, quite a few members bought them, did they turn out to be crap? I have been offered a pair and I wondered if they are any good?