ok right now im talking to a guy that is selling a used supercharger and i have some questions.

here are some details.

Its a vortech supercharger with a UR FMIC and 12 PSI pulley

1. he says that i do not need a map clamp because with the fmic he was getting just under 10 lbs of boost. Do i need a map clamp for any kind of boost? or would i only need a map clamp if i exceed 10psi


2. the kit doesnt come with the timing box or fmu because it was a tuner kit. My question is. if i run an emanage ultimate would i need the fmu and timing box? the emanage ultimate can control timing and fuel injectors right?


thanks for the help

 

Emanage replaces the black box.

I don't know about the FMU.

 

Are you still running stock injectors, or did bigger ones come with this kit you are buying?

 

Yes you still need a map clamp when running any boost over 1psi. You have to hide all boost from the MAP sensor. You can do this with the Comptech ESM or what ever Vortech supplies, or with engine managment such as the emanage piggy or any of the full stand alone's. And yes the emanage will control timing and bigger injectors, so no you dont need the fmu or timing box as this will control those things. Even with a EMU your stock injectors cant suport the amount of fuel needed for more then 7psi unless you get into water/meth injection. So bigger injectors are a must at 12psi regardless.

So it sounds like you bought a high boost kit but with no engine managment to run it? At 12psi you will need a 3 bar MAP sensor, you cant get away with just clampng the stock one which taps out about 10.5 psi. SOS sells a good one, but at this level of boost I would not advise going with an emanage, I'm not entirely sure it will work with an aftermarket 3bar MAP sensor either. Looking for a used AEM EMS would be your best choice for making use of your money and at this boost level. 550cc-650cc injectors would be optimum for your requirments.

 

The stock ECU cannot "see" any boost. So, yes, you need some kind of clamp on the MAP sensor.

The eManage ult. can act as a clamp and solve that problem for you.

The chances of your stock injectors being able to support that kind of boost w/out a FMU are slim to none. You are either a.) going to need larger injectors or b.) the Vortech FMU. Since you have the eManage, I would choose injectors.

 

def injectors, and the stock map sensor in my case tapped out at 9.5psi. i woudl reccomened a 3 bar map sensor to see the correct boost, otherwise your tuner will just tune the top of the map as if it was 10-11 psi.

 

Tapped at 9.5 on your car? Thats interesting. Mine hit 11psi without issue, but have read that 10.4 -10.8 was the cut off. What happened when you went past 9.5 on yours?

 

it just flatlined. woudlnt read past 9.5, once i saw 9.73 but seriously inconsistent. i venture to say as you get closer to its flatline point, it becomes more and more inconsistent.

 

If you have a wideband though and are only tuning AFR via a mechanical source, would it matter really? I have never had a definitive answere on what exactly is the issue.

 

ok still a little confused. I cannot run more than 10 psi on the stock map? even with the map clamp(emanage ult)? also the guy says its a 12psi pulley but it looses some boost with the fmic so he said that he is running almost 10psi. And yea he is throwing in bigger injectors i think 880cc(which i think is over kill)

and my goal is a conservative tune. just trying to get around 300whp.