As the title states,

What Peak & Hold injector drivers are recommended for use with the AEM EMS? Unfortunately unless you got the universal unit, they don't come out of the box with the ability to run low impedence injectors.

Yes, some people use resistor packs, but when you start reaching 1600cc injectors, you quickly find that resistor packs are not working at all... especially on gasoline.

I know AEM has a P&H box out, and I have one (although not installed), but I have heard just too many horror stories about them crapping out and killing engines off.

So are there any peak and hold injector driver boxes that come highly recommended out there? Or are people with 1600cc injectors especially just putting up with the horrendous driveability on pump fuel?

 

I've had good success with the FJO. The new Gen2 AEM EMS coming out next year will have 12 native peak and hold drivers for some applications. Looks to be very nice

 

Thanks Alpha... Sadly the Gen 2 AEM EMS is too little too late.. This is my second EMS solution i'm going through (had Hydra before), and not really all that keen on working the kinks out of another unproven solution really.

Regarding the 1600cc injectors however,

When using P&H drivers, are the 2.5-3ohm injectors actually more controllable than the 5 ohm injectors?

It seems that the 2.5-3ohm units benefit more from the P&H drivers, but am unsure as to whether at the end of the day they will give a better driving car compared to the 5ohm units. Can you give any insight there?

 

bump... anyone else willing to comment on their experience with an injector driver with their AEM EMS?

 

I've had great results with the 4.5ohm/5.0ohm 1600cc injectors. Just need the correct dead times and a good tuner

 

I had one installed in my 2G. Its an AEM Peak hold driver. I did see a difference in control ability. It's for sale if you want it. PM me

 

May be this will be the solution !!!
http://www.t1raceparts.com/ProductDe...Show=TechSpecs

 

I love these injectors. I always keep a set in-stock for my customers here. I actually tuned a car today with them. Great! We're going to do either an Aeromotive Eliminator or Weldon fuel pump with these injectors on an EVO 8 soon

 

I would stick to FIC or PTE injectors. they are almost 100 dollars cheaper and they are Low Impedance/ Peak & Hold injectors. You can't use High Impedance injectors. Plus the spray pattern is the same.

A good read about basic injectors info.

http://www.fuelinjectorclinic.com/in...cal/faq.html#7

 

Why High Impedance Injectors can't be used with AEM EMS ???

 

You can use high impedance injectors. Just have to do a little re-wiring. Have you tuned any car with those Bosch injectors yet? They're great. I've tuned two cars now. They start better, drive better, accel better, can hold much lower pulsewidths better, etc. Tony is trapping 166 - 168 with these injectors

 

You can if you modify it, but why would you?? Low Impedance injectors are better and you will not have to deal with rewiring the car. Sorry, I should clarify next time.

 

Starting, driving, and accel is all tuner related. Nice Trap. I don't buy the drivability. That is fast for 1000cc I would think you would run out of fuel at that trap. What fuel are you using?? And yes I have. Just never tune on High impedance injectors. I have tune a honda if that counts. LOL

 

Alpha, if you don't mine would explain the little wiring. I may give those injectors a try .

 

The re-wiring that is needed is you need to take the injector resistor(s) out of the equation, it is located on the firewall next to the ABS system. The resistor box brings the amp draw down on low impedence injectors thus not cooking the drivers on the ecu. This is not needed with high impedence injectors. You would wire them straight to a 12v source w/o the resistor box.

AWDBOOSTED, the reason the high impedence injectors that Alpha is referring to are better is because they have a spray pattern like a 440cc to 550cc injector, but flow 1000cc. This by itelf helps tremendously for idle quality, drivability, accel, etc. as it atomizes the fuel that much better. Plus a low impedence injector should have a true Peak/Hold driver running it so the response time is much better for opening and closing.