s366 borgwarner small streetport 519whp & half bridge s366
 

Tuned a couple rx7s with BW s366 and efr8374 recently thought id share some videos. Overall pretty impressed. All cars have zero lag, and very useable hp for motorsports drifting or Timattack.. All the engines were built by me and the guys at my shop.
I also just tuned a stockport 13brew on s366 with stock injectors, 10psi made 326whp on 91pump gas. Il upload that video when I can.
I would definitely run a efr or BWs366 on my drift car lol
If anyone needs their cars tune let me know !


FC
Haltech p1000
e85
small streetport
520whp @19psi


FD
pfc
e85
small 1/2 bridgeport
clutch slips after 10psi, stuck at 410whp@10psi until customer upgrades his clutch(currently exedy stage 1 hd) then we can see what she does in power

another fd
adaptronic
streetport
e85
BW EFR 8374 TURBLOWN shorty kit
1000/2000
walbro 450
525whp@19psi more power coming, I actually maxed out the fuel pump, currently installing a Fueled by ai sp800 with three walbro 450s. Shooting for 600-700whp

Do you have any graphs you could share?

So good! Is the S366 an SX-E? Excited to see some graphs too.

Whats the fuel setup on the FC?

If an S366 and EFR8374 both have zero lag, why would anyone spend the extra money on an EFR8374?

"adaptronic
streetport
e85
BW EFR 8374 TURBLOWN shorty kit
1000/2000
walbro 450
525whp@19psi more power coming, I actually maxed out the fuel pump, currently installing a Fueled by ai sp800 with three walbro 450s. Shooting for 600-700whp "


assuming your hp is SAE.

"I actually maxed out the fuel pump"



you actually maxxed out your injectors.


525 is 1008 CFM and 69.65 pounds per minute.

at 10.5 AFR and 6.54 pounds per gallon for E85 that is 1.013 GPM/3834 CC/Min

two items increase the requirements as we move toward solving for injector sizing:

lag which we will est at 13%

max injector duty cycle where we will use 85%

simply multiply by 1.35 and we are there

3834 net X 1.35 = 5176 Gross injector requirements for 525 at 10.5 AFR.

on GAS.

to adjust for E85 multiply gas by 1.35

5176 X 1.35 = 6987 Gross injector requirements for 525 at 10.5 AFR

you have approx 6000 CC Gross.



as to your fuel pump...

a Walbro 9000267 E85 pump makes 98 GPH at 19 PSI boost plus 3 BAR (43.5 PSI) at 13.5Volts.

98 GPH is 5236 CC/Min.

the motor at 525 needs 3834 net gas and 5175 E85

if your pump is hard wired you are O K on pump at 525 and will be not O K above.

as far as:

"Shooting for 600-700whp"

injectors:

6987 required for 525
7985 required for 600
9316 required for 700

you have 6000

turbo

525 hp requires 69.6 pounds per minute
600 hp requires 79.6 pounds per minute
700 hp requires 92.8 pounds per minute

your turbo according to Borg Warner makes 75 tops.

Howard

Sweet numbers!! I'm getting the adaptronic modular ecu in March. I'm in pa, care to tune here?

Jose

S366 is quite slow than an EFR 8374. This particular car makes 29 psi by 3500rpms( according to Dan @ garage Life). Generally an S366 does not make 15 psi til 3500rpms on a well built car. If you look around most S366 cars on this forum take til 4k rpms to hit 15psi.

Response aside;

the EFR uses a investment cast SS turbine housing, is water cooled, available in IWG, has a built in BOV & boost control solenoid, and has two oil seals per wheel.

Nice calculations! Except I'm not at a typical fuel pressure most people are at. The fuel pump is hard wired, and my base fuel pressure is at 60psi (engine off) yeah a lot of other tuners always wonder how I can make power on the size injectors I use.. Lol also I'm not tuning to 10.5 afr. I don't tune as lean as most other tuners.

I am trying to max out the efr 8374 . I had my shot last Saturday but the weather just was not on my side.. Air temps was skyrocketing over 70-80celcius, feels like summer here in SoCal.. I finished tuning but actually didn't get my target hp.. Trying to convince the customer to go fmic and try out the turbo smart wastegate actuator and find a cool day to hit the Dyno and max out the efr8374 on a small streetport in the name of science 👍👍 will post up results !

Holly cow, 176 degree air temps! I would suggest getting the IC sorted out first. I had the same issue and it was killing my power at higher RPM as well as being dangerous. Moving to a Garrett GT 24x12x4 bar and plate fixed that issue. Now I only see about a 15 degrees over ambient temp difference even at 30+ psi.

Also - what coils are you using? Something else I have encountered is getting E85 to ignite at higher boost levels. AFR's in the 10's is probably not going to happen which is not an issue if you are on E85. If your air temps are in check AFR's in the high 11's and even right at 12 should be no problem. Power goes up quite a bit as well.

i appreciate and am supportive of your plan as to maxxing out the 8374.

raising base pressure, while somewhat helpful, is ultimately a losing battle.

base pressure of 60 V 43.5 is up 37.95% of course flow increases at the square root of the % so you gain 17.4% flow.

offsetting the higher base pressure is the declining flow from the pump due to the raised pressure.

for instance at 25 psi boost the pump can do 94 GPH using the 43.5 base pressure while at 60 base pressure the pump does 78 GPH.

in this case an increase in flow of 17% from 60 base pressure produces a 17% decrease in flow so you are back to the same flow as if you were running 43.5

if you are after maxxing out the 8374 you will be at 42 psi boost.

42 boost (max flow boost level for the 8374) plus 60 base pressure is 102. at that point the pump will produce 51 GPH.

none of this works w one pump and it is therefore clear why you are going to multiple pumps.

i would prefer to use one Walbro E85 pump and run it at 16 volts (only) in boost. that way you only get the fuel you need when you need it and avoid pumping it back and forth thru the system.

according to BW's compressor map the 8374 should top out at 580 SAE or 595 STD.

Howard

DK was there any update to this breh??

its a really good read. :icon_tup::icon_tup:

:fingersx:I just got this setup on a fuilly built, street ported 13b with a PFC and although it's not even broken in or boosting yet, this thread just got me super excited!
ima put a pic us asap!