RX7 550cc injectors.

[RedDrifter]

I have just got my hands on a set of 550cc injectors pink tops(part number 195500-2020 )

Are these really 550cc injectors or r they different?

I did get them cleaned and checked to be flowing evenly but I forgot to ask what they flow. :Oops:

I just need to know so I can make the changes correctly to my stock ecu.

Oh and does anyone know what the lag time is for these injectors?

Thanx guys.

[doridori32]

I have just got my hands on a set of 550cc injectors pink tops(part number 195500-2020 )

Are these really 550cc injectors or r they different?

I did get them cleaned and checked to be flowing evenly but I forgot to ask what they flow. :Oops:  

I just need to know so I can make the changes correctly to my stock ecu.

Oh and does anyone know what the lag time is for these injectors?

Thanx guys.

yes thy are 550cc high impedence injectors.

red top, but since they are 15years old they do tend to fade abit

[RedDrifter]

After spending quite some time on the stock ecu chipping(for these injectors) and getting it right. (got it pretty damn good nowtoo) I tend to think they are closer to 460cc rather than 550cc.

[Sydneykid]

I have cleaned and tested many RX7 Series V turbo injectors and they ALL have flowed their rated amount, generally plus 3% (ie; 565 cc's instead of 550 cc's). They are getting on a bit in age, so you do get some that won't repond to cleaning, won't even make 200 cc's and so they are best rejected.

[RedDrifter]

They probly are fine.

I had them all cleaned and tested and were all ok.

Probly has more to do with incrementing of the the stock ecu than the injectors.

Well the car is running better than before and is using bugger all duty cycle(60%) at 17psi.

Ratios are good and the fuel economy is no different.

Cheers lads.

[Cubes]

Just what I wanted to hear.

Fuel economy is no different.

What sort of km's per tank were and are you getting?

[RedDrifter]

I was getting around 450kkm for about 50 litres and now I seem to be getting 430km for 50 litres.(This is around town mind you where I tend to boot it a little more) :Oops: Shhhh Dont tell anyone I do that.

As for on the highway I got 550km for 50 litres witch is exactly the same as before.

I think the stock ecu is holding its own quite well considering.

[TTT]

you program your own stock ecu?

well aren't you handy..

tell me something..

have you had a play with making changes to AFM?

like if you plugged in a Z32 afm, could you make it work on stock ecu?

[RedDrifter]

Essentially Yes.

Though as I found out its not as easy as just making the Theoretical changes.

The injectors took myself and a good mate of mine quite some time to set up.

Damn Injector lag time had us for a while.

I have a z32 afm at home that I intend to put on my R32 very soon. Obviously I will need to make the chages to the ecu. Should not be two hard.(alot easier than the injectors id say.)

I am by no means a guru with stock ecu's as I have a hell of alot to learn yet.

Can be a bit of a :headspin:

I just think people shouldn't be in such a hurry to rid of there ecu when they need to tune for mods. Nissan over engineered alot of there cars and they did the same with there ecu's.

Anyway mate.

you program your own stock ecu?

well aren't you handy..

tell me something..

have you had a play with making changes to AFM?

like if you plugged in a Z32 afm, could you make it work on stock ecu?

[TTT]

good effort I say.

I'd be interested in your results when you do it.

[RedDrifter]

To get it right it took us 3 week ends.

Mind you There was alot of drinking in between.