I shared numbers last time too.
I gained 22% between a stock long block with header and correct fueling and a full tilt IT build.
But the problem is bigger than this one car. You don't have an effective process to determine what a car is capable of. You rely on competitors to send you dyno sheets, and they have a vested interest in what those sheets show. There was a huge ruckus about "getting away from arbitrarily changing weights" in the classification process, but now we are IMO arbitrarily setting HP in the classification process, and getting it wrong by 5 = 85lbs. Getting it wrong by 10 is 170lbs. The reason it was named a process, rather than a formula, is that it was always intended to include subjective evaluation by educated stakeholders to set final weights. We are where we are because we tried to turn this into a spreadsheet, with only one dependent variable that is very difficult to nail down, and has a multiplicative impact on the final weight. Thus we have a lot more volatility in the outcome.
If someone wants to influence the classification of a given car or group of cars, they could write letters and create dyno sheets, or even join the ITAC and lobby for changes that suit their agenda - because the dependent variable is nearly impossible to objectively confirm. Whenever someone floats the idea of power to weight classing, a chorus of replies points out how easy it is to manipulate dyno results if tested at the track. Well how much easier is it to do that when you are doing the testing in private?
There needs to be some level of control added to the system. Maybe - if a recommendation is to change a cars weight by 100 or more within a 2 year period, that the cars need to be independently verified (not sure what that looks like - independent dynos, data boxes in the cars, something), because we are rarely going to go back and put weight back on them from what I have seen. Something to slow the pace of change, and make sure we catch mistakes while we make them or before we make them worse.
Look at what just happened:
MR2 -
2011 GCR = ITB at 2525#
Many MR2 drivers complain that they cannot be competitive at this weight
Feb 2011 FastTrack = ITB at 2430#, a 95# reduction
More MR2 cars start racing
Summer 2012, we see a competitive example that is making a run at the 2012 ITNT. By all accounts it is a car that is built right, and legal, and it is competitive with the class.
Nov 2012 FastTrack = ITB at 2335, a 95# reduction
This car lost 190# in less than 2 years, with very little feedback on how effective the first 95# move was. Seeing the 2nd move made after a front running car showed up indicates little consideration for the existing balance of the class, or possibility that there was some amount of missing or inaccurate information from the ITAC perspective. Yet it was more important to get this done now than to get it right.
Sorry guys. I was patient. I was patient for a few years waiting for the A2 to be reviewed last time. I was patient for a few years while the A3 was finally moved about halfway from where it was to where it should be. I was worried when the Hondas were moved in, were competitive out of the box, yet were not running 'cleanly' coming off many corners. Now when I see more weight coming off competitive cars that were not raced in the previous configuration very long, I get it. The class will cater to a different group of cars. Just try to put in some processes that keep things more stable for this group - IT was attractive for stability, and it is not stable any more.
It is easy for me to move for a lot of reasons - HP and FP are much better subscribed in my area. I will no longer have to drive across the country to find more than one strong competitor.
My car is competitive in HP, and I think will be in FP. I also have a network of knowledge around this car and those classes from helping others run there for a long time.
The landscape of club racing may well be changing, but I still don't see IT being allowed at the grown up table any time soon, and I do want to go and race for a national championship.
I was always going to make this move, but I had planned on making another run at the ARRC and the ITNT first. No reason to spend that money if the car won't be competitive right now, so I am just pulling the trigger sooner. I don't have the bandwidth to keep a foot in each community, so I probably won't be around this board as often going forward.
All of that said, I still think that IT in concept is the best rule set in club racing, and I hope that it regains the reputation for stability that attracted so many of us to it in the first place.