Originally Posted by RR

I suggest you do not stick with twins, I have tested every type www.riceracing.com.au (look under VBOX testing page).

The BNR's are the worst of the upgrade twin turbo's, the turbine wheels are too large and they are laggy and have the narrowest power band of them all.

The best are the knight Sports RF420, but they are very fragile!

Aftermarket T28 BB upgrades are as bad as the BNR's for response and power band, but at least they are reliable.

I suggest you go single turbo, look at my site for graphic real world testings as to why power and reliability all in one, with widest power band and least expense long term

Originally Posted by RotoryDreamer (Post 10756135)

You can use BNRs with any of the emissions stuff they are a direct swap for the stockers.

I don't have any personal experience but I have never heard of BNRs having any problem with reliability. They will have a touch more lag than the stocks because of the larger compressors. Though I have also never heard of anyone getting BNRs much over 18-19psi either so that may be all they can make.

I have read claims that BNRs are suppose to be reliable up to around 22psi or so but as I said I have never heard of them making that much.

Originally Posted by rynberg (Post 5254652)

Alright, I was waiting to start a thread, but I'll post a dyno sheet here...:)

This is at 13-13.5 psi with:

*mild streetport
*BNR Stage 3 sequential
*intake
*res midpipe
*RB exhaust
*PFS SMIC
*9 plugs all around
*HKS TP

I had ignition breakup. The car is tuned for very safe running on 91 octane - conservative timing and AFRs in the high 10s:1.



http://img.photobucket.com/albums/v2...nojet_0001.jpg

As you can see, I probably would have made 5-8 more rwhp without breakup and it holds that power from 6500-8000 rpm. Given my increase in rwhp per psi, I would estimate that I will make 370-375 rwhp at 15 psi with a very safe and conservative tune. The turbos and engine should last a long time at those power levels. I also have water injection to further reduce chance of detonation. I will probably only run 10-11 psi at the track -- while still making 308-320 rwhp. :)

If I went balls out and ran 17-18 psi on 100 octane, I should be able to hit 400 rwhp with a safe conservative tune. But I don't run 100 octane on the street, so it ain't gonna happen right now. :)

Originally Posted by limepro (Post 10757000)

Here is sequential

Originally Posted by M104-AMG (Post 10757333)

I'm also going to do a sequential setup with my BNR's. I'll be running 850cc primaries, and 1300cc secondaries, with a street-port, HKS TP, and water-injection, with a PFC.

I have a Innovatice wide-band and datalogit.

Can I use your map as a baseline ?

Thanks,
:-) neil

Originally Posted by Double_J (Post 10757395)

....I had mine running 17psi and they were a freaking blast.

Originally Posted by Speed of light (Post 10757985)

+1--I can confirm the foregoing. I have a similar setup and its sequential. It has great lowend and at 17+ lbs it's an absolute beast. :egrin:

It's an all around great setup that's reliable and hard to beat. (And passes Cali smog if that's important to you.)

Originally Posted by Mr rx-7 tt (Post 10757996)

Did you run 850 primaries with a PFC and pass Ca. smog?

Originally Posted by Speed of light (Post 10758365)

Not with the 850's--it was close, but the HC's were a bit too high; it might work with a brand new cat. It otherwise ran & idled ok. This seems to be an atomization issue related to the 850's, not an ECU problem. (I don't use a PFC. )

The stock 550's pass even with a large street port--so long as the air injection, ignition and CAT are working properly.

Hope this helps.

Originally Posted by Mr rx-7 tt (Post 10758582)

We can get it to pass with the 550's and the large street port we have. I would like to put the BNR's on the car and get more power but with stock 550's we run out of fuel and are boost limited. Not much of a gain versus the stock twins. Now if I can get the car to pass with 850's it's worth it. I wonder if it's possible to go bigger on the secondaries than the 1300's with the stock rail...

Originally Posted by rx7 SE (Post 10759851)

Where in VA are you that you have to pass emissions? Just moved