I've got the 225TT with the APR chip, i just bought the Forge 007 it came with a few springs. Which spring do I use? Green, Yellow, or Red? I drove it with the green it felt light, I'm driving it now with the yellow, but it still dosen't feel right it almost feels like i don't feel anything till about 4300 RPM . Any thoughts?

 

I havent used that kit so I am not sure which spring does what. For increased boost, I would imagine that you would want to use the stiffer spring? Not sure on this one. Sorry

 

i saw somewhere that had specific psi ranges for each color spring. Find out how much you are running and contact your vendor to see if they know.

 

i think with the chip you need the yellow or red spring (which is ever is stiffer) What spring came inside when u got it? Also did u get it from ttstuff.com? just email ttstuff and tell them your mods and they will tell you which spring to put inside.

 

I did get it from TTstuff, it came with the green spring inside. I tried it out and it had nothing! I currently have the yellow in and it seems to be running better. I will email ttstuff to find out what they say. Thanks for the help

 

From the forge website.....

If you are finding that the valve is dumping more than required or you are loosing boost pressure it is normally an indication that a stronger spring is required. Conversely if the valve is failing to dump it may be necessary to install a weaker spring. If during this tuning of your valve you are faced for example with the red spring being to strong and the blue spring to weak, you can add the spacers to the blue spring to increase the tension by small increments, thus achieving a setting between the red and blue springs.

Valve Spring color coding

Green - 5-15 PSI

Yellow - 15-23 PSI

Blue - 23-30 PSI

Red - 30 + PSI

The above figures are estimates only and should only be considered as a guideline

Please note - fitting a stronger spring into a valve will not increase boost pressure unless existing pressure is being lost. Failure to allow the valve to operate by installing a spring which is to strong may cause damage to the turbocharger.