I ordered a SpeedyEFI PNP with all of the attachments(BMW TPS with adaptor, IAT sensor, USB cable etc.) for $375 last night which I'm super pumped about but today I had the chance to also catch a DIYAUTOTUNE MS2 Extras for $150 (STEAL) but it didn't come with any attachments.

I like the SpeedyEFI because its plug and play, it's easy to setup and it has almost all the features of MS but I also Like the MS because of the support and history behind it.

Has anyone had experience specifically between the two? Whats your opinion on what I should use?

I HAVE USED THE SEARCH FUNCTION but couldn't find anything specifically comparing the two.

Car specs:
1990 T3/T4 Turbo (eBay) 1.6 on 8PSI currently running Voodoo Box (soon to be for sale).

Let me know what you think!

 

Speeduino uses TunerStudio as well.
The firmware is completely open source (speeduino.com) and the community is quite active and helpful.

Both will work perfectly fine and have all the features you would likely be using for this car.

There are probably features that MS3/etc have that Speeduino doesn't have, but that is something you could request to be added.

I am fairly experienced with MS2, and am waiting for my Speeduino boards atm to actually build it and test it but it seems to have come a long way from its early days.

 

+1. The speeduino will be completely fine for your needs.