Nisei Engineering > Forum > View topic - Piping Kit First Articles

**Nisei Team** Joined: 25 Apr 2005 Posts: 115

I know everyone has been waiting for the release of the Nisei Pipe Kit! I'm pleased to announce that it's in production effective NOW!

Today we had the opportunity to fit the 1st article.

ENJOY!

As you can see we've implemented a very direct path & shortend the piping to increase boost response.

It is compatible with the STOCK AIR BOX!

Here is a look at the stock upper vs the Nisei upper.

Piping from intercooler to throttle body, Stock vs Nisei.

Here are some better views of the complete system out of the car.

On the following pictures you will notice that we've eliminated many bends which translates into shortend plumbing.

I did not get the opportunity to measure the exact difference of the pipe length. As soon as time allows I will post the difference.

What we were able to do was to weigh the stock plumbing system vs the Nisei which resulted into:

Stock Plumbing - 6.5 lbs

Nisei Plumbing - 5 lbs

The last thing I wanted to mention is the amount of bends removed. If I remember correctly the STOCK kit has 14 bends & the Nisei - 6.

This savings will increase your velocity more effectively (removal of approximately 8 bends), it will increase your throttle response(shortest distance between 2 points is a STRAIGHT LINE which we attempted), maintain boost more reliably (due to the removal of all the stock couplers elimitnating flex).

ALL NISEI PLUMBING IS 2.5" diameter UPPER & LOWER!

I will be testing for serveral other performance enhancements in the coming days.

Upon completion of testing I will be posting results of what you can expect!

Once again thanks to everyone supporting us and helping us ELEVATE THE LEVEL OF PERFORMANCE STANDARDS!

Joined: 01 Aug 2005 Posts: 8 Location: Los Angeles

is there any plans for a turbo coupler pipe or perhaps a very nice silicon reducer coupler.

Trinydex,

The kit will come with a transition hose that goes between the stock turbo outlet pipe... directly to the Nisei inlet pipe.

Joined: 01 Aug 2005 Posts: 8 Location: Los Angeles

sorry to pry but i'm only asking because i've actually never seen it but as for the turbo coupler pipe...

is it easy to modify it? like can you cut the flange off and enlarge the opening and then weld a bit of pipe on to make a new coupler pipe?

Trinydex,

If I understand you correctly, you want to know if there is a way to modify the factory pipe that comes off the turbocharger or replace it with a larger 2.5" pipe.

If thats the case then I would have to say technically yes but, from a manufacturing stand point no. Let me explain, if we were to produce a 2.5" diameter pipe with a flange right off the turbocharger the it would be:

* Very difficult for installation due to the bolt hole locations versus 2.5" diameter versus the actual flange size.

* If would significantly add to the price of the kit (approximately $40 up).

* Lastly, the factory flanged outlet pipe is fairly short (approximately 5" L) so, I don't think there would be a measurable gain / benefit.

Once our new data logging equipment arrives we will be conducting a series of extensive tests focused on inlet / outlet temps, pressure drop across the cores & the overall system temps and pressure losses.

I spoke to Kevin this morning, according to him we will test if there is a benefit of a larger 2.5" diameter pipe. If there is a measuable gain we will sell it as a "optional" piece.

Joined: 01 Aug 2005 Posts: 8 Location: Los Angeles

simply fantastic

**Nisei Team** Joined: 25 Apr 2005 Posts: 115

Ok everyone,

Here's the inside scoop of what's going on. As most of you know our tooling has been ordered / sent out for re-sharpening. Checked in with our CO guys and they shipped the new one out Monday, which means it should be here Wed/Thurs. Got to send it out for "hard chrome" typically a one day process, so by Fri/Mon pipes should be ready for final finishes.

I will post on SoCal / NorCal since you guys have shown the most interest and let you all select your final finishes, including all you guys calling me from out of town, and you'll have first shot at the first run!

Thanks for all the calls and support!

Joined: 01 Aug 2005 Posts: 8 Location: Los Angeles

is there a flange for the 1g bov or will it totally mimick stock?

**Nisei Team** Joined: 25 Apr 2005 Posts: 115

Trinydex,

This batch may mimic the stock piping. Because the flanges have not all been completed yet. The next batch and all future pipe kits will come flanged with any flange preferred and mounting location desired. Meaning top or bottom mount (for stealth).

Trinydex, if you have a particular idea in mind give me a call and lets see if we can work out the details.

310-408-2767

Joined: 01 Aug 2005 Posts: 8 Location: Los Angeles

just think the stock recirc tube should be able to be reused.

**Nisei Team** Joined: 25 Apr 2005 Posts: 115

I think we're on the same page. The first batch will be coming with recirculation tube fitting.

The second batch may have several different options such as: top/bottom mount, different flanging for all the different types of BOV's, air temp sensor bungs (ems), etc.

I hope I've answered your question. If not call/pm/email/post.

Thanks Trinydex, Now I'm going to catch some Zzzzzz's.

**Nisei Team** Joined: 25 Apr 2005 Posts: 115

For Those Interested,

If you would like to check stock & availability please contact Rob at MyEvoStore.com.

(1) Rob - MyEvoStore.com/Motion Garage Visa/MC payments (949)923-5123 or (949)340-6810.

(2) Nisei Direct - Paypal only at Sales@NiseiEngineering.com.

**Nisei Team** Joined: 25 Apr 2005 Posts: 115

The colors!

will this piping kit work with the stock battery?

**Nisei Team** Joined: 25 Apr 2005 Posts: 115

Unfortunately, the answer is no.

When we began the development of this kit there was no way to route the UICP to fit with stock battery and improve the design. Basically, the only way to bend a set of 2.5" pipes with the stock battery would have been to increase the length of the UICP to eliminate the rubber hoses used. Actually, to get really specific, the only way to fit 2.5" UICP without increasing the length and being able eliminate the rubber hoses. Seemed to be a bad idea because you would have to force the UICP into position and pinch / rub against the upper radiator hose. The only companies I've seen which create enough clearance for a product like that are RNR and Greddy. RNR make you purchase a new radiator hose made from steel and requires you to cut your stock radiator hose to install it. Not to mention the price was well over $100 for this piece. Greddy uses a different technique. They actually reduce the piping diameter from 2.5"to 2.25" (or metric equivilant) where it would make contact with the radiator hose. Actually, they do this several times with their kit. Once again where the UICP attaches near the fan assembly where it connects to the cold side of the FMIC. Which in our eyes would have been a down-grade.

That is why we decided to maximize the performance and designed our UICP with the straightest and shortest flow path. To increase throttle response and maintain a consistent boost pressure by eliminating "balloon effect" of the stock rubber hoses. While retaining the fitment of the stock air box.

The price for this performance came at the cost of removal of the stock battery. Whether it was relocating to the trunk or utilizing a mini battery kit. Believe me, if there was a way to retain the stock fitment and improve the performance without compromise. I would have produced it!!! When compromise becomes a large factor for fitment, we tend to lean towards performance.

I hope this answers your question, if not feel free to call me!