CTS Turbo Downpipe - 3.5"

[gn4rwhals]

I found this today after hearing rumors of CTS turbo coming out with a turboback.

http://www.ctsturbo.com/cart/catalog/MK7_Exhaust-661-1.html

Note says that it is 3.5", seems a tad large for the stock IHI?

CTS Turbo is a really solid brand, so this is awesome news for us stateside.

 

[GoTime1]

Damn that's expensive!

 

[.:KindiGTI]

Maybe it start at 3.5" and reduces to 3"?


as clarified by HGMotorsports in the emails i exchange with them; the Bull-x Downpipe is:

3.5" from turbo outlet to cat and 3" from cat to end.


I don't know what's the case for my Cat-less Bull-X DP whether it's 3.5 inch al the way OR there's a reducer in place of the cat location

 

[GoTime1]

There has to be some sort of reduction to fit the stock cat back.


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[gn4rwhals]

I think this does reduce to the stock catback, although my last downpipe had a 3" flange.

Does this one seem that much more expensive? I always thought around $450 was about right for a nice downpipe.

 

[GTA5]

So another company released their DP, and its 3". Them debates might start piling up

 

[16plus4v1]

The IHI is a much different turbo than what we're used to seeing. It almost dwarfs the k03 on the scale of small oem turbos... And the bigger the DP, the better. Believe me, it's nothing to debate about.

 

[GoTime1]

I have lost a lot of low end torque with my 76mm DP. Although I drive a manual and am still getting used to driving the car. She HAULS in the higher RPM range

 

[Liland]

In Scandinavia many ppl run up to 4.5 inch downpipe on their cars to avoid pressure after the turbo, so if you can get a 3.5 downpipe i would get one.

 

[Seppdelaney]

I want to hear what this sounds like. Especially attached to a 3.0" catback.


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[Nightbluegti]

So what do u guys think is the best size a 3 inch all the way or 3.5

 

[mattchow]

Cheaper than USP's. I'm waiting for more options to hopefully drive cost down, not to mention available programming.

 

[Seppdelaney]

So what do u guys think is the best size a 3 inch all the way or 3.5

Some will claim that a bigger down pipe creates too little back pressure and that you'll lose a lot on the low end.

Based upon my understanding, though, the turbo it's self creates more than enough back pressure and that because "the best exhaust for a turbo is no exhaust", the bigger the exhaust, the better. I'm sure that the law of diminishing returns plays a roll, but I'll let someone else speak to that.


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[Johnny Blaze]

So what i've been reading is that some DP will be 3.5" closest to the turbo and they go down to 3".

 

[gn4rwhals]

Cheaper than USP's. I'm waiting for more options to hopefully drive cost down, not to mention available programming.

Same boat, planning power mods for next year, that and waiting to see what 42DD does with their MK7.