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You could just get the adapters and save a lot of money.

I think the adapter kit is like 129ish?

Should be on the z1 site.

 

You need the new style harnesses if you have old style injectors.

 

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300Degree rails have benefits other than just adaptability, so you're making the right choice... but you do realize that the Z1 package you linked does NOT include 300Degree rails, right?

Also, there is no benefit that I'm aware of to a newer CAS... just get the injectors, rails, and splice in your own new injector connectors.

 

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100% absolutely yes, you need an upgraded ECU to run larger injectors.

The ECU is what tells the injectors when and how long to open. An injector is just a valve that allows and stops fuel flow. If the ECU thinks there are 370 cc/min injectors, but there are really larger injectors, it will keep the injectors open too long, thus dumping too much fuel, and the car will run either like absolute **** or not at all.


In simple number terms, if the engine as a whole requires 80 cc of fuel per minute at a given rpm, the ECU will open the stock 370cc/min injectors for a total of 12.97 seconds per minute (calculations shown below). If your 615cc/min injectors are open for a total of 12.97 seconds, they dump 132.97 cc of fuel... about 66% too much fuel.

[(80cc)/(370cc/min)]*[60sec/min] = 12.97sec

[(615cc/min)/(370cc/min)]*80cc = 132.97cc

[(615cc/min)/(370cc/min)] = 1.66 = 166%

I could break it down to each injector pulse if you really wanted, but the end result is always the same... you're getting ([larger injector]/[original injector] - 1)% too much fuel if you don't get an ECU that is tuned for the proper injectors.

 

Please?

 

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i believe greg from z1? is selling some open box 300 degree rails on twinturbo.net for like 395.