I’m looking into two mechanical deviations from the way that my car currently sits;

1. Wastegate Actuator rod adjustments
   Is it correct that for every half turn of the rod, it should equate to aprox 1psi increase?
   (I believe this is the way it is with the SRT Calibers.)
   _
   _
2. Bypass valve spring
   I only seem to recall seeing optional replacement springs with the Forge bypass valve;
   Do I have to buy the Forge BPV in order to get a heavier spring – or can I buy different springs from one of our vendors?

As I see, and understand it at this time, there is only so much a tune can do, and seeing as I’m not financially well endowed, I am choosing to limit what I aspire to do to my daily driver;

I will be looking into one or two purchased actual upgrades – but these two things are changes which I think might be beneficial in seeing an ever so slightly higher boost level without going crazy…
and in respect to the wastegate asctuator rod, I believe this would be the key “change” from the way one car to the next might have been assembled at the factory ~ and would serve to explain why two otherwise 100% identical cars will in real world testing see different boost levels ect…

(google retrieved picture for visual reference only!)

Thanks in advance for any input, or opinions you might care to share!!

 

Changing boost levels is not a good idea without tuning. You'll he running an improper afr, and timing. If all you wanted to do was adjust boost without tuning you can get a manual boost controller. You don't wanna touch the wastegate.

 

You're air loads need to be changed (along with other tables) with upped boost levels in order to actually make more boost. Otherwise the ecm will automatically adjust the wg down to lower the boost level to match the commanded desired air loads. In other words.... your plan will not work.. lol

 

If you mess with the waste gate and tune it accordingly is that okay? When I was working with James he had me tighten mine 100%

 

WG rod adjustments are perfectly fine as long as it's compensated for in the tune. Sometimes you don't need to change the tune much if any, but most times the wgdc tables need to be completely reworked in order to not over boost or surge the turbo.

 

For the record, I never planned on not adjusting the tune;
That I took for granted.

I figured the if (for example) 1/2 turn of the wastgeate actuator netted in 1lb extra boost capacity ~ that one full turn would be more than enough - and that I'd match that with a higher pressure bypass valve spring ~ and get it updated accordingly...

Right now, when the the ECM is requesting 100% turbine speed, I am maxing out at (at least all Ive observed is) 22psi...
I have been told, that as the car sits, the tune cannot muster any more than 22psi...
So I'm looking at what mechanically might be holding me back

I want to be able to theoretically squeeze just a little more out.

Thanks for the replies guys!!

 

anyone?

I looked into this yesterday and found nothing indicating what I might be able to see from adjusting hte wastegate rod, or anywhere else to get a heavier bypass valve spring...

 

1. incorrect, you can adjust the rod in any way, shape or form and it won't affect your boost because the ecm will simply counter your adjustments itself. The srt calibers don't have a smartass ecm like the lnf does.

2. use flat washers to increase pressure or get a heavier spring from dejon.

 

I had figured that the ECM would compensate, but I also figured that as long as the tables are there, that if the wastegate rod was adjusted to where more boost was able to be made, that under the correct conditions that I should be able to see higher boost...

I am in no way trying to pass myself off as a know it all, but as I've understood it, the way my car is currently setup, my car/ECM cannot physically make more than 22psi...
All I want to do is look into what I might have to do with the way my car sits right now to see higher boost levels ~ assuming the tune is there to support the mods...

I was looking to update/fine tune my car to aspire towards more boost, and I was told that as my car sits, no more boost can be put into my tune...
so I'm at a loss...


I would not be interested in shimming the spring;
Does dejon sell springs separately? ~ or will I have to buy their bypass valve to get the springs?

Thanks!!

 

That sounds impossible because i can command 30psi if i wanted to on my car just by editing a few cells in the airload table, who told you that you can't make more than 22psi?

You can get the spring here DEJON | Powerhouse

 

thanks for the link!!

 

heh-heh!!!

 

Yeah seriously. Either someone is misinforming you, or you misunderstood them saying that your stock map sensors won't register over 22.5 psi in the scanner.

Either way, you should absolutely be able to make more than 22psi from just a simple retune. If your wgdc table is completely maxed out and your airload table in the far right columns are over 270 and you still can't produce over 22psi, then at that point I would look into an issue with wg, the solonoid, or the wg itself (rod, actuator, ect).

There is NO reason to install that spring from Dejon btw.... absolute waste of money

 

I'm tuned ontop of GMS1.

I appreciate the replies!!