Originally Posted by
velociabstract
The engine will continue to make power if you rev it to 6500 rpm or higher. The problem is with the TCU. The rev's climb so fast you need a large gap between the ECU limiter and TCU shift points. If not you hit the ECU limiter. My ECU has the limiter set at 6500. My TCU WAS set at 6400 and I hit the ECU limiter every single time in every single gear. I went back to the stock shift points in the TCU and I still hit the limiter occasionally during the 2nd to 3rd shift. Perhaps because of changing the diff to a 3:27. In other words, to shift at 6400 you'll need the ECU set real high. Based on the way my car acted and unless someone is doing it better now, I'd say 7000. Since your getting a dyno tune from E/C you should talk to them about what's possible with the TCU. I've never used nitrous so I won't give my uneducated opinion. BTW, on a Mustang dyno, my car made 20 hp more at 6400 than 6100 with similar mods as yours. (stock injectors and Pierburg fuel pump)
Les
Got cha , i will be keeping the stock Gearing for a while unless the rear takes a dump on me . The only concern for me is revving to 7k with stacked pulleys will put the blower a bit high past the efficiency range of it wouldnt it ? . So id stay withing about 6500 on the ecu thats if my fuel can support it
So maybe if i set the shifts around stock and make the ecu limiter at 6500 it may work well? For sure i will ask Eurocharged on that i plan to retain stock gearing because traction may become an issue with the nitrous and i will spray in 2nd gear to begin with and see how things go
About how much did you put down with the similar set up , im at sea level and saw 19.5psi on the 178 crank alone
Logged through the ecu sensors
I need to ditch the catz and replace resonator and muffler to let it breathe
I saw the 75 shot gave a guy 100rwhp/100rwtq on another car with a bit less mods put down ~400/400