vw 20vt injectors

[bens_cab]

anyone know whever 20vt golf gti injectors are high or low impedance ive looked at the mega manual and it makes no sense to me

they 240cc injectors standard vw items my ms is set up for low but floods the engine lots

[keithmac]

Have you got a multimeter? read the resistance across the injector terminals, if it`s around 14ohms they`re clased as high impedence, I would have thought they`d be high, seems quite common in VW`s.

[bens_cab]

if there high and i have em set to low would that cause me problems

ive got so many problems with the setup now the only good bit is it starts

just looked at a datalog and megatune reads 1000 rpm on tickover datalog reads 2200 ?

fitted my wideband and getting weird reading running rich and cant adjust

[bens_cab]

heres my settings

required fuel 12.4
6.2

injector opening time 1.20
batt voltage correction 0.20
pwm current limit 100%
pwm time threshold 25.5
fast idle threshold -37.7
barromatic correction off

ill try and post my msq but i think its possibly my setting are miles out

[keithmac]

The settings above look like High Impedence settings? I run 500cc injectors with no problems (req fuel 5.9) also high impedence, I use a 1ms opening time.

What`s you injector PW at idle and at what AFR?

You need to sort out the RPM decrepancy as the MS will think the engine is ruunning twice the rpm`s and give you twice the fuel, the datalog rpm may be correctly showing what the MS thinks the rpm`s are?

[bens_cab]

the afr was round about 10.30 to 11.5

pw was 2.4 i think

i think what you just said about the rpm has sent alarm bells ringing its doubled itself wht??