| I was having wastegate spring problem on my previous dyno which can only hold 26psi. I have now reconfigured my boost controller setup and able to push a little more boost. Original plan is to swap to the heavier springs which SirpriZ (Mark Leader) was so kind to send me a set. Thanks again Mark! But due to the heavy work schedule on local Zs, I have no time to do anything on my car and it'll be a winter project when the car sits a long time again :) Here's the dyno plot today: peak at 31psi and tapered off to 28psi near redline.
 Water injection were on, EGTs at 870C peak. No significant tuning (just clean up the a/f a bit) since I want to see what the few extra psi will yield. All in all, 822rwhp 694rwtq, not a bad result :) This most likely could be the highest power street Z (still running) in the world on boost alone LOL! More dyno plot for different boost level:
 comparison of my Z vs friend's stage V TT:
 Let's just say I don't want to stay below 4.5k rpm if we race :) I also have a video of the dyno run (18mb in avi format). Can anyone host it? Thanks photodump again for hosting the pics!
1990 Nissan 300ZXTT Twin Greddy TD06L2-20G 745rwhp 593rwtq 7.29@108mph 1/8 mile 10.9@139mph 1/4 mile (1.75 60ft) ***new dyno tuned: 822rwhp 694rwtq*****31psi no nitrous Waiting for stronger wastegates spring
 |