wanted

I'm having my car mapped on friday

MY2000 uk v6, vf23, front mount, de-catted, hks induction, fuel pump.

Do I need bigger injectors? I've got a set of 550's that can go on if needed but I've been told that they may be too big for my application. What size are my standard ones and will they be maxed out?
looking for around 320bhp when mapped

BBB3

iTrader: (7)

you have 440cc injectors plenty good enought for 320bhp

53

iTrader: (41)

Err, if you have 550's put them in. Give your mapper all the room he needs mate. I run 440's but if I had 550's they would be in straight away !!!

360ste

iTrader: (1)

Speak to the person who is doing the mapping. Also consider what you want to do in the future.

wanted

Will it not be overkill for 320bhp, Or will my 440's be maxed. I don't know how true it is but have been told that it's harder to get bigger injecors to behave at normal town driving speeds??
I had 480's on my last scoob with no problem
Can't speak to the mapper till friday and that will be too late to fit them cos they will need fitting before then. It will mean another trip and another map if it turns out i could have done with them

BBB3

iTrader: (7)

440 max out around 340bhp

ChibiSF

550 cc injectors will allow you to tune to 18 PSI, so I would have them put in if I were you.

53

iTrader: (41)

440's are good for 320/340 at a max stretch.

550's are much better for your application, will be in the 4th quarter IDC giving you plenty of headroom and scope for mapping. Do it mate, you'll kick yourself if not I promise you. With that list of mods the 440's are going to be the most limiting part of your setup.

wanted

I'll be cutting i fine then, so it doesn't make sense not to fit them. I will defo be looking for around 18psi.

Thanks poeple, i'll get them fitted tommorrow. Will i be ok to drive it about 40 miles with the actuator disconnected?

seddomyster

iTrader: (9)

i just had my car mapped with around same mods as yours at my car made 324bhp an my 440cc inj were used upto 90% so think that be about yours. car runs smoothly an perfect

howes124

iTrader: (11)

when you say 18 psi is that fuel or boost pressure?, as i have 440s running simtec ,full decat, fmic, and getting 20psi at mo till tweek on remap (faulty coilpack).1993 wrx

ChibiSF

On what turbo?

howes124

iTrader: (11)

standard td05

ChibiSF

Ahh okie. Yeah, he won't see 20 psi (of boost) with 440s on a VF23.

wanted

I assume that 20psi from a vf23 will see more than 320bhp

howes124

iTrader: (11)

dont know much about this but is hes turbo better?

howes124

iTrader: (11)

be intresterd to find out mines on RR later this month dont know what expect.

wanted

I ran more than 20 psi on a standard td05 on a uk MY96 with front mount,injectors,fuel pump,cosworth map sensor and other mods and pulled 301bhp/300ftlb which is a good figure on a early classic.

ratboy

iTrader: (4)

Might be an idea to fit them just before the remap mate.
Im going from 440's to 740's and been adviced not to fit them till at the rolling road 30 mins before the map.
The reason being they will overfuel the car badly and coke up my plugs.

Slowboy Racing

20 PSI / 1.4 bar on the vf23 should see you around 330 assuming FMIC, exhaust, induction and fuel pump. You will be close to max IDC depending on final AFR figure set by your mapper. No harm in fitting 550cc on day of map.

joz8968

iTrader: (13)

I'd defo fit the 550s. Not so big as to cause dodgy running when at 320bhp. And as 53WRX said, decent headroom for any fuelling anomolies (plus you're "future proofed" to around 390-420bhp! max)

Plus, you'll never question yourself this: "If I had put the 550s in, then would I have made more bhp...?"

Not sure about the Ph.2 440s, but the Ph.1/1.5 ones go static on the IDC once it gets to about 87% anyway! So another thing to think about in your decision making...

howes124

iTrader: (11)

may i ask silly question, what do you mean but phase 1 / 1.5 injectors, mine come out off a 2000 classic what does it make them ?.

BBB3

iTrader: (7)

phase 2 im 99% sure

worbs

iTrader: (8)

Injectors changed slightly on my`s mate im not 100% sure on what phases are what my`s so i wont guess but your car being an my93 would have been phase1 you must of used adapters to fit my00 injectors as i think my00 is phase 2, i may be wrong though.

howes124

iTrader: (11)

yep used adaptors, just wanted to know whats the difference between phases.

seddomyster

iTrader: (9)

i got 20psi of boost out of my vf23 pushing out 324bhp but drops to 18psi i think

Aamar786

iTrader: (1)

ur not guaranted 320 without the injectors mate if ur lookin for 320 bhp get the injectors put in asap, if not i will buy them off u lol as i bought a vf35 yesterday and need the 550 injectors

joz8968

iTrader: (13)

NY93-96 = "Ph.1"
MY97/98 = "Ph.1.5"
MY99/00 = "Ph.2"

The "Phase..." is an unofficial name given to the 3 changes to the engine in the Classics, as outlined above. For injectors, inlet manifolds and fuel rails, the ph.1 and 1.5 ones are interchangeable.

But yes, your 440s will be ph.2 ones, so I don't think they suffer the going static problem like the earlier ones do. That said, defo go for the 550 replacements regardless, as most posters on here advise...

Aamar786

iTrader: (1)

what is a better turbo a vf23 or vf35

joz8968

iTrader: (13)

VF35.

You did the right thing