wilky

iTrader: (1)

can you put bigger injector's in the small

turbo cossy ?

Glenn5

dont see why not ive seen 1000cc 1s in a small turbo manifold diff fuel rail tho

Glenn5

oh and a plenum spacer and gt35 turbo

wilky

iTrader: (1)

i would like a bit more power .and people say the injector

are maxed out. i have just bought some hi impedance

injector's for my rover to use, and woundered if you can change the

standard cossy injector's to a bigger flow rate

sailorbob

Yes you can, you just need to change the calibration to let the ecu know the flow rate of the new injectors.

wilky

iTrader: (1)

can this be done mate.on my 600 rover you can't do anything with the ecu i had to add 4 more injector's running off a hks injector controller
this is how i got more fuel .it would be easer to just add bigger injector's in the cossy.what would happen if you just put bigger injector's in?

Azrael

You would run too rich....

sailorbob

Yes, eec-iv's (and eec-v's) have two calibration settings for the injector size, HIGH_INJECTOR_SLOPE and LOW_INJECTOR_SLOPE. The first is the actual size of the injector and the second is an adjusted figure to take into account of injector opening/closing times at small pulsewidths. The 'COSY' ecu sets these two settings to the same value (some Cobra ecu's do the same) whereas most ecu's have different values.

As Azrael said you would run too rich. The adaptive learning of the ecu would try to correct for the extra flow of the injectors and whilst it may cope at idle and part throttle I'm not sure if it would cope at wide open throttle. I read a Mike Wesley article a while ago that said the adaptive learning only has approx + or - 25% percent capabilty on the airfuel ratios and this too could lead to fueling problems.

wilky

iTrader: (1)

best to leave it alone

sailorbob

Why? Looking at your other cars, you obviously like to tinker with them. If you are running out of dutycycle on your injectors you need to turn the boost down or upgrade the injectors (another way is to up the fuel pressure but has all the side effects of changing injectors but also risks overloading the injector drivers). What's the spec of your car?

wilky

iTrader: (1)

my escort is running 260 bhp and 300f/lb
does any body know the size of the standard injector's ?
what about a small increase in injector size?

sailorbob

I've been after this for a while too. The ecu code has a value of 18707 but I'm not sure of the scaling factor or the units (probably lb/hr or metric equivalent). Searched the net with the part number but nothing comes up

wilky

iTrader: (1)

i could ask in work as i work in ford's i find out if any body know's
in dunton

sailorbob

Sounds good, but can you get that kind of detailed info at Ford?

bryndisi

Hi did anyone work out what the flow rate was of the standard ST injectors are???

And anybody used the Megasquirt system to tune a T25 EsCos?

sailorbob

liamford

sailorbob pm'd

liamford

sailorbob pm again lol