Mr rx-7 tt

iTrader: (5)

The primary turbo is set at 1.25 bar on the PFC.

The car was making roughly 13.5 hp per lb of boost as boost was increased. Another two lbs. would have given us ~460 at the wheels but we would have to use race gas which wasn't our goal. Ray believes the turbos are capable of 460-470 rwhp on race gas with water/meth injection.
The 430 pull was one of the last and the car was hot.

Timing and tune is conservative btw.

Ray Wilson at PFS is the man to go to for tuning. He spent a lot of time and effort on the tune and we both appreciate it.

NVMYRX-7

iTrader: (24)

Please explain the boost/pills configuration for instant spool .
We really need a list of mods or you will receive hundreds of questions like this one .

What size injectors, intercooler, fuel pump, plugs, intake, exhaust, and everything else are you running.

<track>7

iTrader: (2)

I'd also be interested to know if anyone has turbo outlet temps to compare with the stockers?

Mr rx-7 tt

iTrader: (5)

Pill size in the PCA and wastegate actuator hoses. The smaller they are quicker boost but also the higher the boost.


Long list...

Mr rx-7 tt

iTrader: (5)

I would highly suggest running these sequential versus parallel.

Monkman33

iTrader: (28)

Do you think using some sort of a boost controller would be more beneficial for controlling the peak boost and also allow for optimum spool up speed?

Mr rx-7 tt

iTrader: (5)

We had a Profec S but decided to use the PFC. The PFC did a pretty good job. The pills I used are smaller than the stock pills which gives instant boost yet the PFC still had no problem controlling peak. Look at the torque curve...

You can also tell it's a legit dyno as hp and torque cross at 5250.

GoodfellaFD3S

iTrader: (213)

Agreed. I came to that conclusion many years ago. With the larger turbine wheels the BNR3s are just too laggy when set up non-sequential.

Sequential on the other hand is one helluva party

Chris, congrats to you and your brother on building a real force to be reckoned with on the street

Mr rx-7 tt

iTrader: (5)

Matt and I appreciate it , thanks for the kind words Rich!

Narfle

iTrader: (16)

Yellow,

I'm in SV as well. Would love to check out the car when you're in town.

Yellow R1

Rich, thanks for the kudos. Is your Dad still running an FD (and does it still have the purple PFS box ;o) ?

-Matt

Yellow R1

Sure. I go to Santana Row car meet once in a while (Sat mornings ~ 10:00ish). There are usually some slick cars present - Veyron, 458, LP700-4, Vipers, ZR1/Vettes, etc. Maybe I'll see ya there next month - we can talk cars ;o) Cheers.

-Matt

Julian

iTrader: (14)

Just a thanks and a to Bryan for providing and building new JDM 280PS turbos with balance and mods.

I could have gone the easier & cheaper BNR Stage 3 route, but I had to be different.. we'll see if I made the right choice.

Funkspectrum

iTrader: (5)

I need to roll to one of those events...

Ball joint

iTrader: (6)

Wow! That's a huge number for sequential!

Congratulations to the both of you! I know you put a ton of time and research into this. Now throw in some race gas and lets see what she'll really do!

ptrhahn

iTrader: (9)

Details on these turbos? Do they need to be built from brand new, or can older '99's be built this way?

BridgePorted12A

iTrader: (6)

What injectors exactly??

Yellow R1

FWIW, I tried the stockers, brand new Efini's, & the Satge III BNRs. The Efinis produced a whopping 332 rwhp. The stockers were good for about 356 rwhp. The BNRs....432 rwhp.
Good luck with the Efinis though - maybe you will get mre than I did......I just don't think they can push as much air - too small of snail so they loose efficiency up top.

Yellow R1

550 primaries & 1300 secondaries.

GoodfellaFD3S

iTrader: (213)

^^How were you able to pull that kind of power with those injectors? Doesn't sound right. More magic ?

Yellow R1

We installed a direct battery relay to increase amperage to ~13.9V which drives a significant boost in fuel pressure for the already stout Aeromotive 340....very effective. The car won't pass CA emissions with non stock injectors (even with the stock ECU swapped in). If the CA Govt wasn't so strict on emissions, I'd be driving a triple rotor. Oh well - it's just a toy.

Julian

iTrader: (14)

Don't want to mislead. The Mod’s did not include Byran’s larger turbines, 360 bearings, etc. I only had them disassembled, CHRA's balanced, wastegate ported and wastegate linkage made adjustable. This will NOT be a power producer, only a 'better" stock set-up. Only advantage over starting with original stock units is better housing material maybe. I went this labours route for lower end torque.

Interesting post by Yellow R1 that showed more power (7%) from org stock than these 280PS spec "Efini"

‘Not sure on that as turbines and snails are same size… and seals on 280PS spec should be better for a hair better efficency. I have extrude hone ported intake/discharge so maybe an extra 1% there plus extar 1% from thermal coatings; $6k for less than a bolt on Stagte II oh well.

Ball joint

iTrader: (6)

Well if you're restricted to stock rails you can still go to 850 primaries. If you keep your eyes out for the older RC SNGX-1300's (1300cc secondaries) they flow more as they age. Before RC bored out injectors they did a plunger mod to increase flow. Problem (or not) was that over time the shims supporting the plunger became compacted which increased the flow even further. This is what I run in my car and my "1300's" flow 1620cc's verified by Witchhunter. They flow fine and I made 452whp on my BNR's with these injectors.

Point is, that because of these injectors I'm able to run 850/1600 on stock rails and if you're restricted to stock rails because of CA emissions and want more power it would be something to look out for.

Yellow R1

Thanks. The problem is not the fuel rail, its the injectors mating with the stock ECU & producing a low enough limit of emissions (ie CO, NO2, etc). CA, by far, is the most strict in the country. Using 850 & 1300s will not pass (I know a shop that has tries this approach - it fails no matter what you do - its just too much fuel).

Can you post your dyno - it would interesting to see where you made your power & torque?
Cheers.

-Matt

Mr rx-7 tt

iTrader: (5)

Water and meth and a 340 stealth amped with a relay. 86% duty cycle at ~ 420 whp. Didn't check it in the 430 whp range. Remember Grasshopper, methanol is a fuel.

Magic indeed...