samcowrx

With these supporting mods what power could be achievable from a good mapper and 440cc injectors
TD05 16g
sti v2 red top engine
Warlbro 255 pump
HKS spf induction kit
fmic
>97 map sensor
PFR7B ngk plugs
Fujitsubo Jasma 3" straight thru exhaust.
Stainless up pipe
thanks

filfy

Not to sure about your set up,but on mine im running 342hp with 440cc injectors.Dont know how much more ill get out of them
Mapped at the clinic btw

samcowrx

cool mate nice car, i was hoping to see nicely over 300 bhp with a similar torque figure, which i should think is possible.

filfy

I dont see why you shouldnt get over 300

The Mad Hatter

I also have the same injectors and have 323 bhp and 320 lb/ft torque also mapped at the clinic.

samcowrx

That is good then , i am just in the process of trying to get it booked in with Bob rawle.

Blademaster

Several people think this is bull.

I get 365bhp all day, peak was once 382bhp on a dyno. Torque around 360.

V2 Sti, yellows, tdo5, fmic, ported headers, 3 inch exhaust, ported heads, big fuel pump, lightened flywheel and clutch and good quality pump fuel.

NEVER ran it on cheap fuel.

I was beating some big motors on the race track. I have the trophys to proove it.



John

Scott.T@PolarPerformance

300-320BHP at standard Fuel Pressure will have the 440's running approx 97-98% IDC.
Increase the pressure a little and you should see a bit more.

samcowrx

Thanks scott, would it be worth while getting 550's and no pressure reg, or 440's with a pressure reg?

weeebell

iTrader: (1)

I'm seeing 320bhp with 440s and a Fuelab FPR which cost £120

Scott.T@PolarPerformance

440's will give you a slightly better idle.
But 550's will give you more headroom.
Swings'n'Roundabouts.

Depends what your future plans are.

If I had 440's I would fit a pump and reg as it's alot easier then changing injectors.
But if you have to change them anyway, then maybe 550's are a better, although genrally a more expensive, option.

samcowrx

[QUOTE=Scott.T@PolarPerformance;7760100]
Depends what your future plans are.

QUOTE]

Now you've done it Scott!!

You can probably tell i am building a strong engine at the moment, but its unlikely it will go in this wagon, i will buy an ra for this engine, so my wagon will keep the sti v2 engine and 16G, i am just trying to get it running sweet, maximizing the full potential of what i have already fitted, although if that means buying 550's i will, or keeping the 440's and getting a fpr i will, i just dont want to get to a point where it is definate that i will kill my gearbox!

dazdavies

iTrader: (22)

All this bigger injectors = poor idle talk is rubbish. Its all to do with how good your mapper is. I went up from 440's to 740's I saw no difference in idle and better dirveability and far better fuel economy.

This was on a highly Modded 2 litre. The step up in injectors was to allow for a GT30R

welsh scoob

iTrader: (4)

that looks a similar spec to mine, and i am acheiving 359bhp with 354 torque figures.

I was supposed to have 740's fitted when my engine was rebuilt by a certain tuner.

i paid £475 for the four with adaptors,
how can i tell exactly what injectors they are.

cheers mark

dazdavies

iTrader: (22)

They should be red or blue in colour.
Mine are converted Nismo ones here's a pic.

welsh scoob

iTrader: (4)

so if they are yellow. i was told the incorrect info.
so this could be what is holding back the power.

Tidgy

well im running 341bhp on standard 440's, an no fuel pressure regulator.

welsh scoob

iTrader: (4)

so does anyone know what the approx power you could get with the correct mods.

Tidgy

350 is the main stream thought, but there are some freaks out there that get more (so the 365 might be accurate, 380 seems a tad high, so might have been an optimistic RR), and on the same boat there are some that dont make 350.

welsh scoob

iTrader: (4)

that seems fair.

it managed 357 at power station
and 351 at ap motors.

so it looks pritty spot on.

cheers guys.

Tidgy

6bhp variance isn't much at all,

air temps can make 20-30bhp difference, so 6 is good

dazdavies

iTrader: (22)

Yellow usually indicates 440cc but they could be modified 440's which, as far as i know, flow around the 740cc mark.
Standard Yellow 440 cc injectors will be maxed out (100% IDC) at around 340- 350bhp. I'd hate to run these with outputs any higher than that

Cheers

Daz

Austrian Impreza

iTrader: (9)

What about the US STI and hawkeye 2,5l injectors, they are yellow and sidefeed as well and I was told they are 550s...

Tidgy

the us will be different spec i'd have thought

dazdavies

iTrader: (22)

I thought they were top feed??

Austrian Impreza

iTrader: (9)

They are sidefeed from MY05 2.5l on as well as the hawkeye are.

Scott.T

iTrader: (2)

I'm just requoting what was quoted to me after a customer spoke to Andy F re the pro's and cons of 440's and 550's.
Please feel free to take it up with Andy.

samcowrx

So back to original question, it appears that with a good strong setup, running well on 440cc injectors i should be able to see nicely over 300bhp, with getting near the same torque figures, which sounds good to me. I think if i was trying to get nearer 350 bhp, then the obvious thing to do to help this would be to fit at least 550's with a fpr, which will for sure be a better set up, for that sort of power. Considering i dont want to reach torque figures that will definately munch my gearbox, 440's seem to be the right decision, if i feel, of the mapper feels that a fpr will benefit the setup, i will fit one.

dazdavies

iTrader: (22)

No Worries Scott, Andy's mapped a few of my cars now, they have always been mint afterwards

Cheers

Daz