NOS vs Alky

[kenmosher]

Ahhh ...

Well, basically, the progressive stuff is actually even more complicated than single shot stuff (and more dangerous without some sort of feedback). It's the same principle as the alky progressive systems, you PWM a solenoid (or solenoids) to control amount and do it based on a window switch (for RPM).

The one we built was more comprehensive and actually talked on the CAN bus (only worked on 2004+ CAN vehicles). We used engine sensor data (and hence there wasn't a bunch of external wiring and such ... just the solenoids to an underhood module that provided enough power to run them and talked on the CAN bus to the head unit.

Worked pretty well and was almost like supercharger in a bottle. The biggest thing was calibrating the PWM for the jets/motor to avoid going lean during less than WOT.

Just too prone to user error and misuse ...

[ed39]

ahhh didnt know it was that in depth.... ill stick with the alky

[uncledave]

Forgive me because I'm a newbie, but are there safeguards in case the alky reservoir runs dry?

[PaCemkr86]

yes, there are alarms /lights that let you know when the reservoir is getting low

[Keller]

Very important to heed the warning, because ignoring it means you will probably be looking at a set of headgaskets at minimum. Especially if you are tuning close to the edge.

Keep your system filled, and in good maintenance, and it will not be an issue. Regardless, this is one caveat to alcohol systems.

[aminga]

The ISAC controller while pricey has safeguards to reduce boost when the alky runs low.

[kenmosher]

I had to look that one up ... hadn't heard of it before...

http://www.isacalky.com/

[aminga]

Originally Posted by kenmosher

I had to look that one up ... hadn't heard of it before...

http://www.isacalky.com/

It's a neat controller, More than one needs for mostly street given car but I do like the safety systems.

Just wish I had a motor to test it out right now.