I have a build thread and you can check there. I posted acceleration measurements that were done twice and their difference was a hundredth of a second which means accuracy is pretty good. I compared these times with a stock UK car and there is a 13.3% improvement and my car has a 3.727 fd which gives a 10% worse acceleration comparing to the stock 4.1 fd in same gear. Additionally, the UK car is much lighter comparing to most US cars, because of different crash safety requirements in Europe. Do the rest of the math yourself.


If you have more questions, you can ask in my build thread or send me a pm. Let's not continue the discussion here.

Justin how many back and forth tunes did it take to get right? And how much do they charge each time you have to go back and forth?


Thanks

Not Justin, but I just finished this process with Zach with the Ace350 header and it took 5 revisions for my car.
It is pretty painless process and Zach is amazingly quick at responding each time I sent in a data log.
Worst part for me was when he had me start doing 3rd gear pulls from 2000rpm's to redline, Finding someplace in New York to do that is tough.

Was no added price for the revisions, just paid for the base tune and the revisions where included with the base tune price and Zach didn't stop until I signed off that I was completely satisfied.

It varies with each car. Some cars take as few as 2, others take as many as 20.

Because this is not a one-size-fits-all tune, but rather, the tune is being highly customized to your individual engine, it's difficult to make an accurate guess. The typical range is between 3 and 8, as most behavior is known and quickly adjusted for, AFAIK.

also it depends on if you follow instructions... they said a 2 minute "cruise" and thought they meant just drive around for 2 minutes so i logged to and back from the store. naw turns out they wanted a cruise control.

As long as they don't charge extra that sounds good that they will tweak it until its right. Thanks everyone

Included with every tune purchased from CSG/DT.

Everyone covered it. It took 5 or 6 revisions on the street for me, then we did a bunch on the dyno to maximize the tune as well. No charge for revisions as mentioned.

What Catback systems are people running? It looks like the ACE ends in 2.5" (63.5mm) configuration if what I read is right? A lot of the front-pipes,catbacks are 60mm which I could see being a brick wall with all that flow coming out of the header/overpipe.


I currently have invidia catted FP, HKS legamax all 60mm meaning Id have to update everything to 2.5" as well so I have to consider that into the cost as well.

Why? If invidia's catted FP has flanges made to be used with stock headers & overpipe, you should be able to bolt it to Ace's overpipe (that is part of Ace's headers set/construction).
That is fitment wise. Flow wise/pressure drop wise you are overthinking things. Ace header works good even with stock everthing else (which probably are more resistive then aftermarket boltons you have now).
I'd consider switch only in case if before you were running those with catted header, eg. stock, and if after switch total noise gets too loud when you add in also catless header, or if those particular parts add some unpleasant drone if with Ace's.

Results are good with the stock FP. Incrementally better options, see the Ace FP at 3", but then 2.4" for the rest of their system.

I have an aftermarket fp that doesn't bolt up, but it also fails to bolt up to stock... Baffles me how that made it out the door. I'll be able to fix it, just have to get a couple small welds done.

I have Thermal catback, reported weight was 8lbs lighter than reality but I have it, it's still a few lbs lighter than stock, and the sound/fit is nice... The helmholz tuning is spot on, very quiet cruising on the highway.

Getting ready to do a tune with 93 octane on the ACE + Delicious setup. Curious what the dyno will show after we are done compared to the data from this 91 tune! Coming soon :)

Nice.

I just got finished with Zach last week. No dyno results but I'm very happy with the smoothness and pull and the exhaust is even more refined. Took 7 revisions on 93 octane to get right. And yes Zach is very quick turn around usually 24-48hrs later. Not weeks and months with other tuners

I’ve been working with Zach since last week on my ACE350+Flex fuel tune, so far I’ve done 3 revisions and still haven’t gotten the green light to pump ethanol yet until they iron out the kinks for 91.