What are the advantages of the controller system over the DIY

[GNNOVA]

I'm looking at putting an alcohol system on my GN and was looking for some input on the advantages of one of the contoller bassed systems (Razor, Coolmist) as compared to a DIY system using a Hobbs switch and NOS jets?

Ken

[Orlando_87GN]

Main difference is progressively spraying the fuel, like a duty cycle. A hobbs switch is either on of off with no adjustment in the middle. Check out the CoolingMist controller, it's superior to the other ones out there.

[GNNOVA]

Since I have not road in a car with alcohol injection, I'm a little nieve. Does the car react better to a progress activation as opposed to the instant on?

[Orlando_87GN]

Definitely.

[GNNOVA]

Is the difference enough to justify 300 dollars. I can build one with a hobbs switch for 200.00 and a controller system is around 500.00. This will be on a low twelve high eleven second GN.

[Orlando_87GN]

Guess it's up to you. I tried the hobbs switch home made system and the car always bogged down bad when the switch came on. The cooling mist controller has turn on point, high set point and a duty cycle knob. It also sports a serial port connection to datalog what the controller is doing on your laptop. Best yet, it has a 3bar map built into it, so no need to buy another $70 GM sensor.

[Zap's Master and Superior]

A system that functions with a switch rather than progessively adds alky it will be impossible to tune to perfection. You will be faced with either running a lower boost than you ultimately want or you will be faced with dealing with engine bog at the spray on point when using the on/off systems. You have to spray enough alky to satify the knock supression needs at full boost but you have to select a turn on point before max boost is reached (considerably far from when max boost is reached) so if you are trying to quench 24psi of boost you will have to spray enough alky to satisfy the knock supression needs of 24psi but you will have to start spraying that maybe as early as the 5psi mark. This can and usually does create quite a bit of bog at the spray on point. The progressive systems can start spraying minute amounts at the turn on point and ramp up the volume as boost rises. This eliminates the bogging of the engine due to excesssive amounts of alky at lower boost levels. This also protects you against overboost situations. If your car overboosts to 28psi by chance the alky will continue to ramp up to meet the needs of the added boost. An on/off system can't offer that protection.

If you are wondering if the progressive system is worth the doe do a search. Try and find one person that says they wished they hadn't purchased their progressive system but rather had purchased an on/off system instead. I have used Razor's Alkycontrol system and love it. It was designed from the ground up with Turbo Regals in mind. WWW.ALKYCONTROL.COM

[coolingmist]

Our progressive systems offer the ability to give more flow with more boost. with a fixed rate on/off system they will work for you but will lack tune-ability. You will get results, but not as good. If you want the max horsepower go with the Vari-Cool progressive.

Vari-Cool is the only digital progressive controller on the market that has a tuning gain feature. If you go with a progressive kit, dont overspend on an Analog controller.

All of our systems have a lifetime warranty to the original owner, you should check us out at Water Injection, Methanol Injection systems | Coolingmist. We sell fixed rate on/off as well as progressive kits.

Ask any questions I will be glad to answer.

[GNNOVA]

Thanks guys for the info. This is just what I was looking for. Now I can make an informed decision. I guess I need to save some money.

Ken

[Grumpy]

Originally Posted by Zap's Master and Superior

I have used Razor's Alkycontrol system and love it. It was designed from the ground up with Turbo Regals in mind. WWW.ALKYCONTROL.COM

X2 "KISS" keep it simple stupid My daughter ran in the 9s with her street driven GN with Julio's system

[salvageV6]

There are many simple ways to progressively spray alky. much cheaper than a controller.

For the level you intend to run at if you can build the DIY system you could easily make it progressive enough to not bog the motor.

Sometimes keeping it simple keeps the $$$ in your pocket.

[GNNOVA]

SalvageV6 How would I make the DIY system more like a progressive for a softer hit. I like cheaper. I don't realy want to go more than 20lbs of boost. The car is to nice to beat it or put in a roll bar. I just want to run pump gas and not have a lot of knock. At present I can't get over 16lbs of boost or I'll pull a lot of knock.

Ken

[TurboBuickSix]

If I was going to use a DIY I would use 2 hobbs switches and a variable or fixed resistor inline with the low side to provide less power to the pump then the 2nd switch will come in at higher boost to provide full flow. I am also considering this. If I go with a plug and play it would probably be coolingmist because cost compared to the diy setup is significant. Lots of guys were spraying alchy like this for years before any of these kits came around,granted NONE of them were in the 9's but 11's were easily obtained before progressive kits were used and that was your stated goal. Just alot more effort to get the tune right but it can be done and it has.DIY Alcohol Injection System The progressive kits are very attractive though, better performance is alot easier to obtain, and everything comes in one box for instant gratification and the support is reportedly very good.

[ULYCYC]

Originally Posted by TurboBuickSix

Lots of guys were spraying alchy like this for years before any of these kits came around,granted NONE of them were in the 9's but 11's were easily obtained before progressive kits were used and that was your stated goal.

Yep,,That's because they weren't 9 sec cars to start with. No system is going to make a 10sec or 11 sec car magically into a 9 sec car. That's like saying Powerade drink got the funnycar to break the track record

[TurboBuickSix]

Originally Posted by ULYCYC

Yep,,That's because they weren't 9 sec cars to start with. No system is going to make a 10sec or 11 sec car magically into a 9 sec car. That's like saying Powerade drink got the funnycar to break the track record

Yep, that's outrageous!! Who would think that ANY system could do that?