I want to make more power with my FC without blowing any more money than I have to, that's why I'm considering purchasing a BNR Turbo because of their bolt-on configuration. It's very low hassle. Currently I have an S5 Turbo using Rtek 2.1 with an FD Fuel pump/ 550/720cc injectors.

I would like to just run 4x720cc injectors all around, keep my existing fuel pump, and swap over to a BNR turbo to increase the power output relatively easily. I would be using the Rtek 2.1 injector presets hopefully doing little to no fuel modification and be using Arghx Boosted Based Timing's map.

The question is which BNR turbo should I be looking to purchase for my fuel set-up? The BNR Stage 2 & 3 look like they're around the range of horsepower I can support with my fuel? I'd really appreciate some input. Thank you.

Here's some additional information:

Link to BNR Turbo's: bnrsupercars.com

Supporting Mods can be found here: https://www.rx7club.com/build-thread...hread-1023129/

 

I ran the BLT..**** I mean BNR!.heh!.. Stage 3 with 750/1000 and I just about maxed the 1000's out.It would be a grape..uh Great turbo for you.I could get 15 psi on that.
I'm hungry now..weird!??..

 

I went with the S5 BNR Stage 4 when I did my hybrid turbo, but if I were to do it again I would go with the Stage 2.

Stage 2 seems like a really good balance of power, response, cost, ease of installation and stealth/emissions for the FC.

 

I have the stage 2 and really like it, it spools nice and quick. You'll need to make an intake pipe if you get one though since it has a 3" inlet.

you're fairly fuel limited, so I'd just get a stage 2 and if you run out of fuel turn the boost down....

 

skip bnr talk to Darren or russ get a manifold made, and buy a nice turbo. i know russ is getting a tig here in the next month too.

 

I made an S5 convertible with stage 4, spools really fast, like in 0.8 bar at 3k rpm. but controlling the boost is antoher story

like it came it creeped like hell, cracked the rear plate as I did not rewire the fuel pump.

then ported the hell out of the wastegates and loosened up the actuator rod. now it boosts around 0.8 bar till about 5500 rpm and than starts to creep up to about 1.1 bar max, funny thing is even with the wastegate hose disconnected, the boost profile doesnt change alot.

I know it could make more midrange, but I fear it will start to creep higher than 1.1 bar when I tighten the actator rod some more.

it runs about 75% duty on 550/1680 injectors, stock top mount intercooler with pre comp w/m injection. extimated power, dunno, between 350-370 rwhp?