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Agree. I feel like OP has to be honest with himself about how most miles will be driven. I think this car has enough torque stock to overwhelm most any tire if the driver doesn't have good throttle control. The stock Super Sport is actually a really, really good tire in terms of dry grip...

If anything, it's us late 2021 owners with locked ECUs that would have any regret (not that I have any). As others pointed out, 2020 owners can close up any HP gap to the 2021s with a tune.

I know the delta is what's important but 424 whp would be pretty muted gains on a 2021 that clocks in around 370-380 whp stock.

My guess is ~450 whp/~500 lb. ft., with the tune and downpipe accounting for 90+% of that. I would say any charts for tune+downpipe combination should give you a decent ballpark. Take it to the dyno and let us know!

6/1/2020 is the cut-off date AFAIK. I have not seen any post-6/1 ECU that is unlocked. I have a 7/1 build date and I am not even bothering to send it to anyone.

Volk discontinued 19" CE28Ns a long time ago for some reason. :dunno: And the existing 18" sizes, AFAIK, don't work for the A90. I hope they bring it back because it would look spectacular on the A90.

Curious... did you dyno your car with JB4 and the downpipe? I have wondered what the delta is of a 2021 with piggyback and downpipe over a comparable 2020...

Just wanted to bump this because this diffuser is beautiful. I'm not on IG so is there another way to contact juan_n_only?

You could swap for a catted downpipe that is guaranteed not to cause a CEL. That's as close to foolproof as I can think of. Active Autowerke is the only one I can think of that is guaranteed, but I think a couple people still got a CEL even with this one. Only drawback is that the catted...

Understandable you would think that but I'm not going to steer a fellow forum member wrong. I paid something like $1500 in dealer fee and freight combined which closed the gap but bottom line it was still a very good deal--better than what I saw at other dealers in the area. To me, paying $45K...

$43-45K is pretttty close to what you can get a 2021 for new if you are willing to travel. If you are financing, then that delta closes up even more. This one is from the same dealer I got my 2021 3.0 Premium...

THRILLED to see the 3.0 turn in a sub-3 minute time. The stock Super Sport tires gave up a few seconds or more compared to a Cup 2 or another true street/track tire. Also, the CLA45o_O:eek:

The Cup2 is a great tire but if you're a little flexible on sizing, your options broaden to Goodyear F1SC3, F1SC3R, P-Zero Trofeo, etc.. I think I have seen more options for 305/30/19 than 305/35. 265/35/19 and 285/30 seem to be a little more common too. R888R just isn't available in the same...

Same here. Hopefully they will do some kind of intro group buy.

Wow, at $519, the catted version of their downpipe is $400+ cheaper than everything else I’ve seen on the market, including AA, ETS, etc.

I haven't heard that. HP gains from a cat-back system on the A90 are minimal. So, unless you had a potato stuck in your exhaust, I don't think a new cat-back system on this car would net you 50 HP. A new downpipe would net more, but I don't know what HP gains would be on a 2021 with or...

Active Autowerke promises no check engine light, but the lawyer in me is not sure if that is exactly the same as "no error messages".:D I am personally holding off on downpipe and all other performance mods until an ECU unlock is available. I know the OEM ECU can adjust somewhat for an...

Congratulations! Our little one is 9 years old but if our experience is any judge, it will depend on the car seat. We had a Britax convertible car seat, which was great but VERY bulky. It barely fit in the four door Insight we had at the same time and I could not see it fitting comfortably in...

Being familiar with Apex from the Camaro community, I reached out to them to see if they had something in the works for the A90. For those that don't know, Apex is very popular with the BMW crowd. The first car has the SM-10 and the second has the EC-7. Not yet released but coming soon...

Well, Active Sound Design plays a big part, I think. Stock in sport mode sounds absolutely hypnotic above 4K but with ASD disabled, the stock system is very quiet.