I have read every thread on meth injection and have found so many opinions on jb4 vs aquamist for the best controller some say jb4 is better while some say its reactive and no flow sensor then some say just go with aem cause it can bleed boost. Basically I want to know what systems can actually detect clog or leak and cut timing or limit or cut boost also I am curious how the pump controls work as I read the aem can run the pump full time in by pass mode or can run on demand if you buy a solenoid kit I wanted to know what reaction time is like with the on demand and last question is how many psi is really nec some say 200 or more but then bms and few other kits are 160 and have good feedback. I am flash only fbo, stage 2 lpfp, inlets and outlets and bl coils I am trying to piece together an affordable direct port setup as I'm moving to a state without e85 and have to drop to a 93 octane tune thanks in advance.
NO, NONE, NEITHER, or anything else that means no or none can any Meth controller on the market detect a single individual meth nozzle clog. The base tirigger/failsafe of most Meth controllers are Pump amperage readings. Which in most scenarios the controllers are programmed with base amperage mapping for whatever pump is sold with the kit. So if you deviate from that specific pump. The Amperage output curve by flow may be vastly different and not work correctly to trigger the failsafe.
The Pump amperage method relies on low amperage meaning you are out of meth or there is a break in the feed like after the pump. and high amperage means there is a short, or a flow blockage. Flow blockage meaning anything from a line to a clogged nozzle to a none working solenoid.
Running a pump in Bypass mode is a bit of sneaky marketing. as most pumps will run in bypass mode automatically once head pressure meets the pressure bypass limits. So realistically any controller can do that IF it runs the pump at full tilt when ever its on.
Accepted Optimal pressure is 120-130psi through the nozzles. More is better, and is better for atomization. But 120-130psi is acceptable. Kits can be rated at 200-300psi, but they almost never run at that and the pressure delta depends on the size of the nozzles used and if the pump can keep the pressure up behind the nozzle(s).
the best standalone controllers on the market are as follows (in No real order)
1. Torqbyte/Evolve MC1
2. Aquamist HFS4
3. Snow Performance Stage 3
Those controllers can all have Flow sensors added and all can cut boost as a failsafe. However depending on your setup the Torqbyte/Evolve MC1 can also control boost solenoids so it can actually adjust boost pressure by WGDC or just simply cut boost altogether. Also, it can take other inputs like throttle, boost, afr, injector duty cycle and etc to help act as failsafe or calibration media. The other two have injector duty cycle and boost iirc.
The JB4 since you mentioned it, also runs off of pump amperage output to determine. And can also have a flow sensor added AFAIK. But also just cuts boost if there is an issue detected. So really no difference in failsafe. They call it "Switching to Safety Map". But its just dropping boost. But with the JB4, you're also stuck with its inferior logging and other nuances.
Being flash only, you have many options to incorporate into your meth system. AEM units works and are fairly simple if you're on a budget or just want something simple. Hopefully that helps.
My Direct port meth kits run off the Torqbyte/MC1 if it means anything to you.
