Where do I begin ... this could be long.
Fall 2019 weather in the metro St Louis Area has been awful and at least 4 race dates I intended to make my first n2o passes were cancelled.
I cruise the internet and saw that a mere 6 hours away in Tulsa they were having a test and tune on 11/24. I rented a trailer and made a day trip out of it.
The game plan going in.
I put together a standalone fuel side with holley blue pump and Quickfuel regulator to deliver VP 110 gas from a 1 gallon cell. The nitrous kit is an NX Express hitman plate, 100 hp jets, and maximizer EZ progressive controller. The timing is contolled bu MSD digital 6 plus and the plugs were NGK R5671A-9
I had hoped for at least 2 passes and that I'd be in the 9s for sure. the thought was 2.5 second delay and pull 3.5* of timing. the progressive starts at 20% and brings in the rest over the time. If the track could hold 2.5 then I wanted to drop it to 1.5.
While I was swapping a few plugs and getting into race trim a guy started talking to me. As he was about to leave I asked how the track looked. He said the small tire guys were struggling. I run a 255/60 drag radial so I immediately went into concern mode. My car has had issues open headers at times with tire spin. Adding a 100 shot made me feel like that would be a huge concern. The new game plan was to set the progressive to 4 seconds on pass one.
Pass 1: pull 3.5* with 4 second ramp on progressive. forgot to data log
result - 1.577, 4.305,6.538-110mph,10.096-138.00 mph
Pass 2: pull 3.5* with 3 second ramp
I started the data logger but shut the car off before ending the logging session so I could get a good plug read. this caused fitech to not log the that or any other passes for the day. I had to delete a file to clear up but not until I was home.
While in the pits getting a second bottle ready they said 20 minutes left for the day. This was roughly 75 minutes earlier than it was supposed to close. there was no chance to swap jets and turn the car around.
pass 3: pull 3* and 2.5 second ramp
drove straight back to the lanes to make a 4th run NA.
Pass 4: NA, no timing pulled
I made a video on the way there.
Initial reaction video:
deeps thoughts postmortem:
1. Was I really getting 100 HP?
2. Does the MSD really pull the correct timing based on the dial setting (was not tested)? could 3* timing when adding 20% power inthis case 20 HP actually slow the 60' over NA?
3. Do I need a taller hood or should I cut a hole and add a scoop like Troy Lacrone and many other n2o racers.
4. How is my NA 660" only 3 tenths slower when NA from any pass that should have been full power on the nitrous varying from 4-2 seconds?