87 t-66

iTrader: (133)

i am in the process of putting a streetported s5 t2 motor into my 90 vert. i do not want to install a standalone as i already have a built t2 with one. i am not wanting to push crazy power out of this car, just a fun weekend cruiser.

here's what i have so far:
streetported s5 t2 long block
act clutch/pp
n370 ecu/afm/map sensor
walbro
rewired s5 na engine harness
cleaned/flow tested 550cc & 1600cc injectors
t2 driveline
bnr stage 2 hybrid
corksport 3inch turboback exhaust
aeromotive fpr

basically what i want to know is if a rtek is safe to run this turbo with 500/720cc injectors on 12-14lbs of boost. i dont want to wait for the 2.0 version to come out because i dont think it will be out until the summer. i basically want to drop everything in and go. i dont want to have to tune this car. is this enough fuel?

or should i keep the 1600's and use a safc to fine tune everything?

if i could safely use the 1.7 rtek and 720's that would be great so i dont have to spend the few hundred dollars on a wideband and the safc. is anyone else running a similar set up? thanks in advance.

scrip7

iTrader: (6)

With the stock tmic, limit boost to 10 psi. Fmic, you should be fine. 1.7 rtek and 720's works well. That's what NJ Greenbudd uses on his iirc.

87 t-66

iTrader: (133)

with a hybrid turbo?

scrip7

iTrader: (6)

Your hybrid is a stage 2, which is an upgraded cold side , plus a port job on the stock wastegate iirc. Check with NJ Greenbudd on the forum. He is using a bnr hybrid (stage 2 I think) with rtek and 720s with no reported problems. I personally wouldn't use the stock tmic above 10 psi. It's not very efficient above that.

87 t-66

iTrader: (133)

from his sig he is using:
Rtek7 2.1, BNR Stg 1 Hybrid, (4) 720cc

they dont have a 2.x chip out for the s5 t2 yet

scrip7

iTrader: (6)

My bad. I misread yours was s5. His is s4. As for running 500s and 720s, sounds like not enough fuel for 12-14 psi IMO. I would lean towards all 720s or 720/1000.

hkp

iTrader: (2)

i also have a s5 turbo and want an rtek but cant seem to find anybody running it, im sure it will work but its nice to see results.

2slow4stock

iTrader: (18)

I would think that 550/720 would work. But yeah, the stock top mount is bad.

Hmmm... rtek 1.x + safc + injectors. maybe?

87 t-66

iTrader: (133)

looks like im going to either go microtec or power fc...i don't wanna chance it.

arghx

iTrader: (3)

since you have a BNR stage 2, 720/720 with Rtek 1.8 will work I think, as long as you've rewired the fuel pump. I think the guy who did 348ish with an Rtek 2.1 had 720/720 , search the dyno sheets subforum. I would NOT use 1680's with anything but a full standalone due to the injector staging issues.

87 t-66

iTrader: (133)

they dont make the 2.x for s5's...not yet anyway.

RotaryRocket88

iTrader: (7)

I was wondering the same thing while doing my build over summer. I was considering using a BNR stage 1 w/ 4x720s and a Rtek 2.0/2.1 like NJgreenbudd, or even 720/1000 with fuel adjustments. From what I can tell from digging through posts, the low 300 rwhp range is about the limit of four 720s, so a 1.8 should work too, but you'll be limited to only boost control to tune it.

If I were to run a hybrid of any sort with a 1.7 & 550/720s, I'd be keeping it around maybe 8psi until I was damn sure the AFRs were still in the 10s-11s.

87 t-66

iTrader: (133)

i just sold my n370 ecu so it looks like ill be going with the powerfc and 550/1600's for now

scrip7

iTrader: (6)

Good luck and post back with results. It's always a good thing to see what injector combinations and ECUs work for diiferent setups.