I'm using a switch to change between high/low boost.

I had significant creeping issues on my 7lb spring, that exceeded my pump gas capibilites..so I swapped to a smaller 4lb spring. Which holds @ 6lbs.

If my math is correct, puts me around ~ 300-320whp. SLOW, which is wastegate currently.

I have a switch that when flipped changes me to full boost, 15psi, but that requires 110 (race gas).

I want to change my setup so that my switch takes me to my preset of let's say 9lbslbs or so instead of 15.

I know this is where I change it, but I'm not exactly sure how to change it, and what = 9lbs for example ?

I know it's the top box, with the long gradual curve, but I'm unsure on what changes I need to make.



Thanks

 

Change the 'boost switch target' to 160-170kpa and see what it does. If the rest of the setup is correct, that'll work.

Your boost target comp table doesn't look right, but it works off the main boost duty table so it could still work depending on what's in that table.

 

If I convert kPa to psi, the total in the Boost Switch Target is currently set to 183.98, which converted to psi is approx ~ 26.6 and some change. My current max boost w/the switch on is 15psi. So how is that right?

160kPa is approx ~ 23.2lbs...

I don't understand?

 

~100kPa is 14.7 psi, atmosphere. You are boosting 9psi/14.7psi higher which is ~61kPa. 100+61=161kPa. 15psi is 15/14.7=202kPa, again all approximately for easy math.

How do you have the switch hooked up? Is it a toggle or what and into which open pin? I have the AEM too and I am looking into this as well. THanks.

 

I understand what you are saying, but my current setting is 183, which by your math should be 202?

That doesn't make since?



Yes, it's a toggle switch. Hi/Low. Switch on it seems full boost (race tune) Switch off it sees wastegate.

As far as the pinning on the ECU, it uses the D plug on the harness. I don't remember the exact pinning, but I can check it out and report back. Not sure if that changes b/c this is an S2K or what...just an fyi.

 

Yeah, if 183 is giving you 15psi then it's not setup exactly right, but it's not a huge deal if boost is holding steady. 183kpa is about 12psi. Just drop down that target boost number until you get the actual boost level you're looking for.

kpa x .145 - 14.7 = actual boost level in psi

 

Ok, I'll give it a shot. As you can see that added to my confusion...but it sounds easy enough.

Seems like I need to go over a few of the boost comp tables anyway.

Thanks Tony

 

The S2K will use different pin locations, but I really wanted to know is if you used something as simple as a toggle switch. I'm researching things now so when I go back to boost I should have everything down.

Another question is are you using boost by gear or just a hi and low boost setting?

 

Hi / Low for now.

I was told you can only pick one. Can't do both

 

I was looking at the pin diagram for my EMS 1010 and I only see one output for PWM boost solenoid. I only see an option for one or the other as well. It also looks like you can make it TPS dependent too. I guess this option is for traction control/drifting?

 

Same topic, good discussion.

http://www.s2ki.com/forums/index.php...#entry16317674