mynameisdaniel

I've read a lot of contradicting information about the format of the RPM signal from the R33 ECU etc. I'm looking to build an Arduino project and I need to know the electronic format of the signal from pin #7 on the ECU. Is it a rising/falling 5/12V square signal? To complicate things further I'm using the standard ECU and also an RB20 Nistuned ECU (I also have a Z32 one handy). All work fine with the tacho so I'm hoping they all output in an identical fashion. If anyone can assist that'd be fantastic - or even if you can point me in the direction of someone who will know for sure.

The ethanol content is the same, the difference is the 15% petrol used is now premium 98 octane petrol over the lower grade they used to use. Raising the octane rating from 105 to 107. Theoretically even more knock resistance which is a bit redundant on E85

Thanks. I saw the 40mm ones fit well but they're significantly more expensive as far as I can find and my understanding is standard length EV14s (48mm) will just squeeze under the intake manifold with the right rail. Cheers for the tip on the FPR! That'll save some money as I won't need to run more than the standard pressure anyway. Cheers. If I can confirm this will fit under the standard plenum with 3/4 length injectors (and obviously shortened spacers) I'll send you a PM.

Thanks guys, I've sent him a message. The EV14s seem very popular, I'm surprised how little information on them there is..

Yeah I'm looking at getting a new rail and pressure regulator as well as the injectors. It would, but very few people (even quality brands) actually specify the size of the rail holes so I'm wondering if it's just assumed to be one size or I have to guess... For the manifold side I don't understand how both 11 or 14mm could fit?

I know this has been brought up many times and I've read everything at least twice but there's still information missing. I'm looking to run top feed Bosch EV14 injectors in my RB25 using the standard intake manifold. I have various reasons for this, and yes, I have considered just running Nismo side feeds. I am aware I need 40 or 48mm (seal to seal) length injectors (are 3/4 length 48 or 55mm?) with 7 or 15mm fuel rail spacers respectively to get it to fit under the plenum. What I need to know is whether I need 11mm or 14mm diameter bodies (which size are most RB25 fuel rails designed for?) and are adapters required on the manifold side if I want to run these top feed injectors in place of the standard ones? Any input would be greatly appreciated, particularly similar setups with exact specs.