I had a chance to put my 91TT on the dyno at Z Con. This is not the Z listed in my profile (90 is listed there).   So I will list what the 91 HAS and Does NOT have.91TT with the following Stock: Turbos, Injectors, Manifolds, throttle bodies Mods: JWT ECU with 15lb boost jets (although went a little higher on the dyno) SZ 4 bolt version 2 downpipes (not 3") SZ 2.5" test pipes Stillen Cat back UR crank pulley Above as purchased.   I added the following prior to Z con: SZ lightweight flywheel ACPT driveshaft (about 12 lbs) Stillen Intercoolers Selin Dual intake system. There were 4 runs made without a fan on the car. Was suppose to be 3, but the first run was not captured by the computer.  So the second run was the max power run (before heat soak).  Throttle body temps were measured with Infrared to be at 160 F at last run. All runs were down after autocross on a 95 degree day, so engine / intercoolers were fairly warm.  
 
  
 This was more than I was expecting.  Based on this, I think I need to turn down the boost a bit until I get bigger injectors. A/F was shown to be 11.0 
   |