[dblock7]

So I've been having an issue since my car was tuned

I have a 2017 540xi m package catless downpipe, intake
Dinan Exhaust

after tuning my car it revs out of no were

I use a company here in Long Island called RK-TUNES
and they're horrible. almost 3 months and nothing super disappointed

I used MHD tuning with them

any other Tuning Company anyone can recommend?

[uberboosted]

I've been using bootmod3 on my 2020 540xi with no issues. I use the OTS tunes.

However, I would recommend contacting MHD before spending a bunch more money.

[darkrom]

RK Tunes is well known so it’s surprising to hear this. If I was in your shoes I’d want them to finish the tune I paid for. Never worked with them so idk how they are to work with, but people are generally very happy with their tunes from what I see.

[mike@x-ph.com]

Good luck, OP. I recommend you fix it before spending more money, but since it's already been three months, I'm unsure if there is a fix.

If you choose a different route, I recommend bootmod3 with off-the-shelf maps.

try it and if you want more power, we also offer Jordan Tuning maps