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Old 12 Apr 2005, 07:57 pm
Topless in Cali Topless in Cali is offline
Cool Cruiser
 
Join Date: Jan 2005
Location: San Clemente, Ca, USA.
Posts: 204
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The wastegate actuator is from turbochargers.com, company out of Tx that does work on srt-4's and other cars. It has a much stronger spring in it and can hold boost up to 20psi steady. It can be activated by as little as 13psi though. The problem is that using the standard pressure line from the back of the turbo makes it pull at about 13.5-14psi. A little to high which makes the computer start to drag timing, you can feel it in the car as a slight bump in the acceleration under WOT. And if you use the line from the underside of the turbo it makes the stock BOV open and boost goes shooting out. you can also run a straight line from the throttle body line to the BOV to equalize pressure under boost and keep it closed, but the problem with that is under vaccum the BOV opens as it is pulled by vaccum. To correct this blow off under vaccum, I had to order a Forge motorsports BOV with the interchangeable springs, which I will need anyway if I want to run 18-20psi under S1. So I bought a Mopar unit that I really didn't need, but live and learn. Now I read up before I buy stuff to make sure I don't have to rebuy the same thing just better. Now I am in the process of researching boost controllers which will be needed to run the higher boost. Probably a Greddy profec b, 2 stage so I can run 15 most of time and 18-20 WOT. Of course, this all depends on wether or not they will ever release stage 1 for the 05. I'm getting a bad feeling about it....[:0]
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