shaun byrne

final update, think i am finally sorted. i rigged up a 5.6v feed and this is how i wired it. and the results. pin 1 was earthed pin 5 was fed 5.6v pin 6 is ecu input now when the switch is on pin 1 voltage out of pin 6 is zero, so this i presume could be used as wastegate spring pressure in my case 17psi. when switched to pin 2 voltage at pin 6 was 1.2 v when switched to pin 3 voltage at pin 6 was 2.4 v when switched to pin 4 voltage at pin 6 was 4.5 v when switched to pin 5 voltage at pin 6 was 5.6 v so hopefully these voltage variations can be used for various boost maps within the g4.. cheers guys for all the help..it was needed..lol bernie

cheers martin. so pin 6 goes to analogue input on the ecu the 5v output from the ecu is then split in two and fed to terminals 1 and 5 correct?. i understand the terminal 5 theory as that is what i was going to do, how does powering terminal 1 work?. is there not a direct 5v feed then going to terminal 1 so when in this position 5v goes straight to the ecu, or is that the plan?.sorry for being a pain bernie

quick note , the resistors are 1k 25w. i only have a multimeter, but when i put 2.5v to pin 5 2.5v came out of pin 6. as i turned the switch the readings were pin 4 .6v pin 3 .9v pin 2 1.2v pin 1 1.4v not sure if this helps..lol bernie

att. phil & matt. hi guys happy new year. below is the switch i have got, its a 2 pole 5 postion, i only really need 3 boost settings. i have marked the terminals, can you advice wher they should go. i presume pin 5 is 5v ecu output, pin 6 is ecu input, and pins 4,3,2,1 are the variable settings?. but M att mentions and earth?. any help is appreciated guys,just trying to get the switch fitted and wiring down to the ecu piont so the guys fitting/mapping the ecu can then just solder my harness to the ecu ..bernie

cheers guys, have bought both the above switches to experiment, probably try to use the top one of those two, the 3 postions one.i can only find resistors of 1.5k ohm,s?. will these be ok if they are all the same rating and does it matter what wattage they are?. thanks again bernie

cheer matt. so if i only want say 3 boost settings, a potentiometer with 3 postions and a centre contact would do it?.bernie

cheers phil. thanks for your help again bernie

cheers phil. not sure which model of g4 mgt are fitting, but i know its a pcb that goes in the original ecu and uses the original ecu plug..if that helps. i like the first switch, simple. so if i used that what number of variable boost settings would i infact be abble to have 2?. say 1.4 and 1.8 bar? would the number 0 be redundant? cheers bernie

cheers Phil. was thinking of something like this http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item;=310171519712&ssPageName;=STRK:MEWAX:IT#ht_1584wt_1051 so zero would be wastegate spring pressure, say 1.0 bar then have number 1 as 1.4 bar ans number 2 as 1.8 bar. would that work or would i need something like this?. http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item;=260520203483&ssPageName;=STRK:MEWAX:IT#ht_2107wt_960 cheers bernie

hi all, getting a g4 fitted in my skyline in january, i know there is an option for a variable switch for say 4 boost settings on the ecu. i assume its would need to be a potentiometer type switch, has anyone fitted a dash switch that has say 2-4 boost options, if so what type of switch would i need?. 4 postion toggle or riostat type. does the g4 work on voltage to control the boost?. sorry for a long winded question straight off. bernie