Vipec Plug In , The Major Advantages Over Pfc ?

[discopotato03]

So , can the Vipec read a brand new CAS as well as the OE computer ? I'm beginning to wonder why Nissan stayed with this optical cam driven CAS as long as thy have and not just reverted to a simple crank trigger . Why high reving RB26s didn't get them std is strange .

A .

[Guilt-Toy]

I don't think any ECU can read the 360 as well as the oem ecu.

[discopotato03]

Surely the standard late 80s and 90s Nissan control boxes were not computing power houses . I keep reading that the CAS outputs a high frequency signal and thats what aftermarket computers have problems with . I also keep reading that belt/chain driven cam angle sensors have all sorts of ignition scatter problems and that makes it difficult to tune with good accuracy .

Just for the record did the GMS GTRs run Electromotive computers and did they have crank triggers by any chance ?

If so they though a lot of the factory cam driven CAS ...

If there was a simple affordable way to attach a crank trigger wheel to the standard crank pulley that would be the way to go . You still need a cam reference so the brain can tell which of the two revolutions a four stroke sequentially injected engine is on but thats real simple anyway . A Cas disc with a single hole could do that . Or another Hall sensor and rotor .

The big dollar builds should be all over this , cheers A .

[33GTRV]

Well, its not a problem all big dollar builds encounter either buddy. The distortion you speak of has a bit to do with belt noise and interference, this has been attributed to certain makes of belts i believe. In reality, you are overthinking this waaaay too much. Its a good ecu, ALL of todays breed of ECU's are good, cept microguess. Honestly, talk to your tuner, nut it out with him and go from there. If you have a signal interference issue, sort it then. If you want an absolute hassle free system thats going to be there forever, open your wallet to the tune of 45+k and call Motec, get a setup with all the fruit, and be happy with a 60k build for 250rwkw.

[GTSBoy]

Trust me. There is nothing difficult about reading the signals from a 360° slot optical pickup at 1/2 of 10000 rpm. That's only a 30 kHz signal. Child's play, even in the 80s.

[discopotato03]

Yeah thats what I think yet the web and market is full of aftermarket CAS discs with a lot less slots in them .

I did speak to Scott at Insight and he said get a nrw CAS if its more than a few years old . By CAS I'm not sure if he means the whole CAS assembly or just the internal electrical ring with the photo diodes in it . Then if this Vipec plug in can get good accuraye signals from it no problem .

I just don't get why Nissan went with an ancient early 80s optic system when Hall triggers are so simple and cheap . Toothed wheel bolted to the back of the crank pulley and a hall sensor , another for the exhaust cam that requires little accuracyand Bobs yer uncle . Nissan actually had this system for one year (1981) in 280ZX Turbos with L28ETs only they had the cam reference hall sensor in the distributor , aside from a rotor button and cap thats all the dizzy had .

Anyway waiting for Insight to open in the new year .