Lschiavo

Hey guys! I am installing my greddy kit! One more for this team....
It will be ready for thursday evening.. I will post my impressions and dyno sheets..
Anyone knows the safe level of boost for this kit?
I thought it was 5 psi but i know people running 7 psi. What is the recommended level of boost?

Thanks
LS

rkostolni

The emanage is tuned for up to 7psi, so as long as you don't exceed that you should be okay.

Fanman

7 psi across the rev range, but it lowers to 5 psi on the top end. This was done as originally Greddy could not source a colder spark plug & they did not want to have detonation on the high end.

army_rx8

fanman are there codler plugs you can use to hold boost at 7 across the board?

rkostolni

That is actually a myth. Greddy did not, and could not do this since they do not have a boost controller. A simple spring loaded actuator type wastegate does not have the ability to regulate boost based on rpm.

The boost drop off is actually a flaw with the kit. I believe this happens because of the increased back pressure under heavy load (high rpm, tall gear) because the turbo is a restriction in the exhaust path. This results in a smaller pressure differential across the turbo and hence less energy to spin the turbo. A boost controller will fix this problem.

Lschiavo

Do the turbo have to be broke in???

Fanman

That's what was said in SCC. Don't shoot the messenger. I do have colder plugs in my car, but also I have installed a boost controller as I am going to 8 lbs. of boost in my car.