First time dyno results

[FiveOCapri79]

Finally got my car dyno'd today on a Dynojet. On motor with timing at 10*BTDC, I hit 231whp and 267tq. I then dropped timing to 8* and got 225whp. Then came the 100 shot and I pulled 320whp and 424tq. After that, I tried the 150 shot and got 342whp and 457tq. Sort of disappointed at the 150 shot but overall, I was pleased with what I got. And of course, I still had fun.

 

[Grn92LX]

Nice numbers. Sould have tried 14-16* timing on motor and run 10* timing on the spray. What plugs do you run? I'm guessing autolite 24's with a .035ish gap? The disspointment with the 150 shot sounds like either low bottle psi or bottle was low. How was the a/f ratio??

mike

 

[FiveOCapri79]

All nitrous runs were made with about 900psi. I'm using the Autolite 23's with .035" gap. I was going to try bumped up timing on motor, but since I never have it up, it was kind of pointless to me. The A/F ratio was kind of odd though. At around 4000-4500rpms, it was lean at about 14.1, then it dumps a bunch of fuel and results to around 11.3. Probably the computer sensing a lean condition and dumping fuel to compensate.

 

[rod_351]

If you are using a nx wet kit you should of left your timing at 10* and put a octane booster in it. NX makes a booster that works great. On my 150 shot I actualy made 165 at the wheels

 

[matm347]

You shouldn't change the timing at all for your 150 shot of nitrous, it's not needed, your dyno results and times will agree. Just change the heat range with of the spark plugs(1 range per 100 HP).
I used to back the timing off as well until I saw several of my buds runing full timing.

 

[FiveOCapri79]

I usually ran the 100shot with 10* but had it down for the 150shot. I haven't tried running 10* on the 150 shot. A local guy around my town suggested I bump my timing up even more to 12-14.