Pettersen

iTrader: (1)

Just curious what i should expect to get when i get it tuned.

Engine:

S4 T2 irons and housings, small streetport.
S5 NA rotors.
Apexi PFC with datalogit.
Lighweight flywheel.
S4 NA intake manifold.
all emission equipment removed.
E-fan
No servo.
2*2,25" headers.
2,5" single exhaust (might change to 3" since the car is only going to be used on the track, and there isn't a noise limit out on the local track).

j9fd3s

iTrader: (3)

intake manifold?

Pettersen

iTrader: (1)

S4 NA intake.

j9fd3s

iTrader: (3)

i think the intake is going to cap you, i'd say 160-170rwhp

Pettersen

iTrader: (1)

Thanks for the answer, if i get that much i think it should be enough for now. Can focus on adding lightness, aero and suspension before i need to add more hp.

peejay

I never had the chance to run the N/A intake on a streetported T2 engine, but I'm going to guess about 200-210 crank HP, which will be about 150-220 wheel HP depending on who tests it

I got a guy on another forum who insists that people are making 270 wheel HP with four 330cc injectors. The math simply does not work that way unless the dyno is seriously fudged.

Pettersen

iTrader: (1)

Maby he meant 4*330cc pr rotor :P

Pettersen

iTrader: (1)

Speaking of injectors, i'm running the 4 440cc injectors now, should i change to the 550pri and 720sec injectors i have from the t2 engine ? Or maby 440pri and 720 sec?

j9fd3s

iTrader: (3)

nope, not needed. injector duty is gonna be like %75

23Racer

I made 184 rwhp in my 1/2 bridge with a Holley 650 dp on it. It ran the S4 TII housings and irons with an aggressive street port on the primaries and the BP on the secondaries. I was running the S4 ECU bodged to make it think that I was always at full throttle. The headers were the same, extended 2" primaries into a single 3" Borla, then out.

Since changing to the ITB's and the MS1 setup, I am just over 200 rwhp on the same motor.

Gearboxes have been an S4 NA box.

Eric

killalot13601

iTrader: (5)

Id say 150-160 to the wheels.

peejay

No, just one per cylinder, on a 12 valve engine, running a turbo in an unhappy zone in its map... oi!

The things people will believe. Apparently when you run an injector past 100% duty cycle, it still keeps increasing fuel flow. Supposedly.

Pettersen

iTrader: (1)

Took the S4NA intake of the engine, to remove the bridge to the 5/6 ports since it's in the opening area of the 4 port irons. So cut out a bridge and started grinding to get it clean and smooth, but turns out there is very little material, so i now have a hole from the side ports wich connects to the holes below the sec ports, so i'm just putting on a T2 intake until further, guess that will loose me a couple of hp...

jorx7

iTrader: (11)

first use the t2 intake mainifolds complete, port match them to take in more air,using the n/a intake manifold will hurt your power, port your exhaust ports need to get ride of the exhaust gasses better if your taking in more air.
you can do a bigger street port wont hurt you, keep the stock 460cc injectors theres no need for bigger. remember your not boosting, run a 2.5 exhaust if you going single, any bigger will kill your low end.with the right tune you should see 200 to 210 to the wheels,

when i was running my apexi pfc on my stcok n/a s5 motor i put down 190 to the wheels, mods were ignition amplifier, corksport aluminum intake pipe,lightweight flywheel, racing beat full exhaust, all emmisions removed. running stock 460cc injectors, and walbro 255 pump. efan, aluminum radiator,

jorx7

iTrader: (11)

now on my new motor im running full s5 t2 block, n/a rotors full bridge port,street port,exhaust ported, port matched t2 intake manifolds,ported throttle body,greddy elbow, same msd ignition amplifier,lightweight flywheel, racing beat main crank pulley, apexi pfc with banzi racing adaptor, 460cc injectors, and at the time of the tune walbro 255, with a custom defiened auto exhaust, and i put down 235-230 to the wheels. i later switched back to a racing beat header with silencer and t2 catback from racing beat. and put back the stock fuel pump, was waisting to much fuel. with the walbro even being tuned lean. i dont belive i lost power switching back to the racing beat if i did maybe 5 hp, i run premix with 93 at all times, also oil modifications were done plus coolant passage mods.

jorx7

iTrader: (11)

one other note use the stock map sensor from the car for the tune, using one from a t2 or a 3bar sensor will only make the car very untuneable. the stock map sensor works perfect cause it was never ment to read boost, so when u rescale the map for 0 to 20 as negative pressure it makes it a smooth tune.

Pettersen

iTrader: (1)

I'm probably going to the tuner in the weekend around may 24, and i can only work on the car in the weekends so i have very limited time window to get the car ready for tuning.

Could you share your settings for using a stock S4 NA pressure sensor? That would be great!

And explain in further detail how i can rescale the map. I'm just in the beginning of starting to learn about tuning, so please share everything i need to do, don't assume i know anything, cause i don't, or atleast very little.

jorx7

iTrader: (11)

well my pfc is for a fd, but with the banzai racing adaptor its plug and play. only stating this cause i know pfc's exist for fc's. not sure which one you have. im using my s5 map sensor its pluged in the harness so no modifiying needed. since i have this set up im using the stock wire harness, no need to rewire anything. as far as rescaling the map on the pfc to make 0-20 negative pressure my tunner did it, so im not exactly sure. check on the forums if anyone has experiance with tunning. or just pm banzai racing since they were the first to use the pfc on a n/a rx7, i was second. since me think there is 1 other person. also check out banzai racings website, it gives more detail on using the pfc for s4 and s5 rx7's.

Pettersen

iTrader: (1)

Went to the dyno with a T2 intake manifold, 460 primary and 1000cc secondary.

Banzai base map with some small adjustments made to it, and some minor fuel tuning. Around 750C egt's and 12 afr's.

j9fd3s

iTrader: (3)

congrats, you beat the high end of my estimate by 6hp!

Pettersen

iTrader: (1)

Yhea, not a bad estimate on your part

jorx7

iTrader: (11)

dam take out those 1000cc injectors on the secondaries. no need for them, did your tunner rescale the map so 0-20 is negative pressure? or did the map banzai give you already have it done?

Rub20B

Maybe they ran 8 bar fuel pressure trough these 330's :P ?

Pettersen

iTrader: (1)

[quote=jorx7;11563423]dam take out those 1000cc injectors on the secondaries. no need for them, did your tunner rescale the map so 0-20 is negative pressure? or did the map banzai give you already have it done?[


It was already in the Banzai map.

Why would i want to do that? What possible benefit would that give me? The ID 1000 are way better than the stock denso 460cc, injectors.

jorx7

iTrader: (11)

It was already in the Banzai map.

Why would i want to do that? What possible benefit would that give me? The ID 1000 are way better than the stock denso 460cc, injectors.[/QUOTE]

just dont see purpose of big injectors like that unless your boosting. thats all. as long as your tunner was able to get the air fuel mixter good. thats what matters! post some pics!!!! want to see the setup!!!