I’m taking a break during tuning my 4th car of the day and just got to read this. I have nothing to say to STM, but since SUPERLOUDSTI has been our customer for the last year or so, I’ll gladly respond to him.
You just posted a video of you driving our tune with flat shifting turned on…but you’re not flat shifting. The sound you call “stuttering” is called a rev limiter. It is engaged by the clutch pedal. That’s what allows the car to be flat shifted. You’re taking your foot off the gas, then getting back on the gas before you’re all the way off the clutch pedal, so the rev limiter is still in place. It bounces off the rev limiter until you take your foot all the way off the clutch. That’s not a hesitation or misfire…it’s a rev limiter. Anyone watching that video can tell this. The switch for flat shifting is on the stock cruise control switch which is activated if the pedal is touched at all. That’s so you can flat shift by barely tapping the clutch pedal, which is the proper way to do it. We’ve been over this, but I’d be happy to go over it again.
I’ve been nothing but supportive of you over the years, gone well out of our way for you on numerous occasions and ate crow and said that for your second time ever at a drag strip, running 12’s isn’t bad at all despite it making us look bad unjustly. Now we’re at a point where you’re bashing our shop publicly because we built a car that you cannot drive well enough to show what the car can do.
Here’s the video you had me take on the dyno where I properly flat shifted your car from 3rd to 4th gear. Notice the difference betweeen my shifting and yours? Yes yes I missed 5th gear…I’m not perfect. 
I shifted 2nd to 3rd normally. You can hear and see the difference. When I flat shifted, it was so quick that the tires chirped and you can see some tire smoke. If it was my car I would have shifted even quicker.
Here’s one of me flat shifting Jason’s STI from 2nd to 3rd the one pass I drove in that car. Nevermind the visible laying of rubber from tons of wheelspin with less power than SUPERLOUDSTI has.
It’s disappointing that one of our customers was swindled by another shop into thinking there’s something wrong with their car when it’s perfectly fine. It’s also disappointing that the shop used this opportunity to view my AEM EMS mapping which I put a lot of time into for my customers.
A ton of us watched STM’s front facing GT35R car run 13’s the one day a bunch of NYSpeeders went to NYIRP this year (about a month ago) with the owner driving, but I didn’t approach that guy and tell him his car was built wrong. Emery got in and promptly ran an 11 second pass. That’s no different than your STI SUPERLOUD. Both cars made good power, but neither ET’d or trapped well with the car owners driving. Both car owners need more practice and I’m sure both cars will run quick times with the owners at the wheel in the future.
I’m upset that you gave away my AEM EMS mapping to a rival shop, but when the smoke clears and you realize what really happened here…you know where to find us.
What he’s saying is that you’re shifting slow enough that the nose of the car dives down, then picks back up when the turbo starts to spool back up after you finish the shift. When the car is shifted properly, this doesn’t happen. The nose stays up. You can see this in videos of 9-10 seconds STIs because to go that fast you generally have to drive well.
-Mike