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For Those Who Have Done The "twin Turbo" Pipe Mod

djvoodoo

By djvoodoo,
in Engines & Forced Induction

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djvoodoo Experienced

djvoodoo

Posted
Posted

I have read the many forums about the pro's of doing this mod, so I bought myself a spare pipe from Ebay and had the divider put in.

Does it feel any different? Not sure. The weather is cold so it's very responsive anyway at the moment.... Might be placebo effect but it feels more punchy from 2-3.5K. On boost feels the same.

My question is:

Did you notice the turbo spool noise inside the cabin become more pronounced? I noticed that the turbo's "sound" quite different inside the cabin. Slightly more whiney/whizzy i suppose.

Piggaz Grand Master

Piggaz

Posted
Posted

Since your car makes a million horsepower If it's good enough for you it's good enough for me

It's a very lazy design from Nissan, regardless. It makes a huge difference. I have done a back to back test with Marko_R1's car. 3.0 and -10's. Without it, it chided like a steam train. With it, 90% of the shuffle went away. GT-RS's suck dick either way, but that is a first hand experience.

There are NO downsides to doing this mod.

MrStabby Grand Master

MrStabby

Posted
Posted

Would be good to see a before and after dyno run if anyone has done it.

+1, or even a flow check/pressure drop measurement of each.

Downside could be lower bang for buck than some other mod, when using smaller non-shuffling turbos. Piggaz - would you do this on a car with stock turbos? -7s?

scotty nm35 Grand Master

scotty nm35

Posted
Posted

Was planning to do a before and after on Daz's car, as he plans to run one if it helps with flow. Should help even on a stock car as the front turbo entry is pretty bad.

Cheap and inconspicuous, I like those kind of mods.

Piggaz Grand Master

Piggaz

Posted
Posted

+1, or even a flow check/pressure drop measurement of each.

Downside could be lower bang for buck than some other mod, when using smaller non-shuffling turbos. Piggaz - would you do this on a car with stock turbos? -7s?

Micko's old man just threw this pipe on his -9/stock engine GTR. From the seat of the pants it feels a little more linear.

If you look at the pipe, the front turbo air is basically "merging" at a right angle to the incoming air from the rear huffer.

I believe Sean Morris did a back to back years ago. He was claiming 8-10 hp increase from memory. Have a search online. You should be able to find it. I can't remember the turbo setup he tested it on though.

Just do it, put it on and forget about it.

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mr skidz Veteran

mr skidz

Posted
Posted

here's a picture of my first gtr back in 2004, it had a polished cusco hot pipe and from memory it was very well made and I'm pretty sure when I looked inside it the merge was better than 90 degrees more like 45 degrees and it looked just a smidge bigger in diameter also.

post-60000-14331296415259_thumb.jpg

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