New Product Announcement - The Boost Box! Boost by gear for the SRT4! - Page 52 - SRT Forums

ToMuchBoost · 09-29-2009, 06:45 PM

Any tips/tricks for this working with am aem ems and auto trans? I've got it all wired in (stock sct PCM right now) and will be tuning the aem ems this winter.

phrozen · 09-29-2009, 06:47 PM

Quote: Originally Posted by ToMuchBoost

Any tips/tricks for this working with am aem ems and auto trans? I've got it all wired in (stock sct PCM right now) and will be tuning the aem ems this winter.

You'll have to disable boost by TPS or add the TPS wire to the AEM harness. It is missing the TPS connection to the stock PCM.

Auto trans will also require the next version where you can set your own gear ratios, since they will be different than the 5 speed.

Turbolag87 · 09-29-2009, 08:52 PM

ya i think im going to Ex gate my manifold and put a 3" bellmouth too see if i can get more power out of it.

01StratRT · 09-30-2009, 05:40 PM

Quote: Originally Posted by bene

ya i know they cant hold more than 24psi. but with the 9 psi spring wouldnt you have a hard time holding more than 18 psi?

Any answer to this?

bene · 09-30-2009, 05:59 PM

ill test it out in a few days if no one responds.

im installing it right now, the resistor goes between the blue cut wire from boost solenoid inline between it and the black/red wire?

directions were a bit confusing there

phrozen · 09-30-2009, 06:00 PM

Quote: Originally Posted by 01StratRT

Any answer to this?

Yes, you can run more boost than 18 psi on a 9 psi spring. But, it is more complicated than that. It will be limited by the exhaust back pressure, which is different for each setup.

But, as an example, I am able to hold 24 psi on my S3 turbo using only 8 psi of spring pressure.

Others have similar results. There is no hard and fast rule for how much boost you will hold.

phrozen · 09-30-2009, 06:02 PM

Quote: Originally Posted by bene

ill test it out in a few days if no one responds.

im installing it right now, the resistor goes between the blue cut wire from boost solenoid inline between it and the black/red wire?

directions were a bit confusing there

Sorry, I will work on the directions.

The resistor connects to the side of the cut blue wire that goes to the PCM. The other side of the resistor goes to ground.

The other side of the cut blue wire goes to the boost box.

bene · 09-30-2009, 06:05 PM

Quote: Originally Posted by phrozen

Sorry, I will work on the directions.

The resistor connects to the side of the cut blue wire that goes to the PCM. The other side of the resistor goes to ground.

The other side of the cut blue wire goes to the boost box.

i was way off. i didnt see sides of it specified so i figured we just used the PCM side only.

so blue wire gets a resistor and gets grounded... at the battery? red/black goes to blue of the solenoid side.
the black wire is grounded on the PCM side, and what does the black on the solenoid side get?

also it says splice into the orange/green map sensor wire? i see a full orange and then a green with red pin stripe. which one is it?

phrozen · 09-30-2009, 06:10 PM

err.... no. that's way off. let me look for the diagram....

bene · 09-30-2009, 06:15 PM

ok lemme try again

PCM side of the cut wires just gets the resistor ran between then and thats it.

red/black wire goes to blue on solenoid side, and solenoid black wire gets grounded?

phrozen · 09-30-2009, 06:16 PM

Here is the diagram:

Blue wire at the solenoid gets cut. The side that goes to the solenoid goes to the black from the RED / BLACK pair of the boost box.

The side towards the pcm gets the resistor. The other side of the resistor goes to ground anywhere on the chasis.

The black wire at the solenoid is also ground, so you can leave it connected to the solenoid or cut it and use it for the resistor and run a new ground for the solenoid. Either way works fine.