If you could use 3-3.5 inch pipe from the down pipe back it would make a huge diffrence. Im sure it wouldnt cost over 500$ to have one fabricated. Buy a box of 3inch mandrel bent pipe from summit for around 120$ then take it to a good welder. I know a welder where i live that i was going to get to build headers for me to make a turbo 350 chevy. He builds tube frame race cars heh, and does cheap work.

 

Photo proof that JET can use a ruler.....



JET

 

enough proof for me that the downpipe suxs

 

It sucks donkey ***** as Cartman would say! Turbonetics is going to have to fabricate a larger downpipe for stage 2 unless they can alter the physical laws of the universe like getting Spock to open up a worm hole and dump the exhaust into another galaxy or 4th dimension.

JET

 

you don't even want to see the uppipes then. I measured prior to my install and I think it shrinks down approx 1.75"ID at one point.

 

Meh... touche. The last time I had mine out of the car was 1.5 years ago, but it looks 3" in it. I could have swore we were told 3" at the time. When I take mine out when I finally get aroudn to that wastegate relocation I'll do a full measurement.

And yes, I had a feeling all along the downpipe would be changing for the stage 2 kit. It defintely wouldn't be good for that kind of power regardless of if it were 2.5 or 3". I still believe if it were routed up over the top of the header and then down it would have much more room for a larger pipe.

 

with the small size of the piping, I am very curiuos to see how it would behave if the turbo were only driven by the driver's side bank of cylinders.

It would be very easy to do. just block off where the crossover pipe enters the "y" pipe. then, put a test pipe on the passenger side header. throw it on a dyno and see what happens.

my guess would be a delayed spool up, but alot more power!!!!

 

2.5 intercooler pipes are big enough because the air is compressed. I used 2.5" crush bent pipes on my 2.3 ford turbo for up pipes and made about 350hp with a stock t3, but i also had a open 3 inch downpipe.

 

.....but we are going for 400, 500, 600 rwhp with some tiny and fairly lengthy "hot side" ( from heads to turbo) piping here.

 

Its funny how you all say it sucks although it works extremely well for its intended purpose. Stage 1 was not designed for 20 PSI and 500 WHP. Thats why they are doing a Stage 2. The current downpipe was designed with 360-380 RWHP in mind as that was Stage 1's goal In the end what you choose to do on your car is up to you. I'm pretty confident in Turbonetics ability to design a system to make 500+ RWHP and I'll let those guys do the design work rather then try and re-engineer things on my car.

 

i run a 2.5" downpipe on my 1.6l honda. works a charm!

 

ah-ha, i knew aps did at least one good thing, lol, putting the turbo where we can run a larger dp. i think thats the only thing tho.

is there any more room to put a larger pipe in there? it shouldnt really matter, unless the turbine outlet is larger then 2.5 inches on the new stage 2, which it probably wont be.

 

Rob...true it does does it purpose. I hope the stage 2 offers more flexibility.

for example, the greddy kit is designed for about the same amount of HP as the TN kit in stock form, but the greddy has loads of potential. Will the stage 2 offer loads of potential, too?

 

4th dimension is time.

 

Yes there is room if the pipe is routed slightly differently.

 

I stated above that you should be able to run a 3"+ downpipe if it's routed over the top of the header. Right now, it basically is routed through the most narrow spot down the side of the motor. If you fabbed one up custom then you should be able to run a larger downpipe.

As far as it being not adequate, obviously it does make power for this kit's intended purpose (like MIA stated). This is why I always ask people that are interested in this kit if they plan to push for more power on a built motor. Until the stage 2 kit is released, it's not even worth it.

 

Well the design goal will be 550 RWHP. I'm sure it will be capable of more as you don't many changes piping wise to make more then that.

 

I was checking things out just now and I saw that if we could somehow reroute the A/C line then there would definetly be room for a 3" pipe. Who would I see to get one fabricated???? Does Turbonetics do custom work?

JET

 

I don't have the car with me now, but I believe if you routed the downpipe higher, you could fit a much larger pipe but would have to reroute the AC line below the downpipe or another direction altogether.

I think you're going to run into fitment issues with any sized downpipe and the headers you have now. You need to move it up and away from the bottleneck created between the headers and the frame of the car.

 

You can buy tubing and a small tubing bender to make your own a/c lines. I have made fuel lines out of copper like that.
here is a link http://www.tunerschoice.com/xq/aspx/...qx/Product.htm

A/C lines dont have to be routed a certain way to flow. You can bend these and flare it to put fittings on for hard lines. Any mechanic should be able to do it for you, find a good one. If you are going to go this route though it would be good to start learning how to do this stuff yourself so you know how it all goes together if you have a problem.