Hey folks, looking to figure out which way to go for the next step on modding my 15 sti. Looking to either go with the cobb stage 2 turbo back or go with a DP/Protune at JMA. As much as I like the simplicity of just getting the entire exhaust and OTS map on the accessport, I really want to make sure I'm getting as much as I can for the money. Looking for community input as well as practical application of one or the other, any advice or personal exp is much appreciated. Thanks Current Mods: AP Cobb st1 + Box Kartboy STS
Protune will always be the better way to go. The OTS maps are a general map that will work but may not be perfect for your car as each engine may be a bit different. When it comes down to it, the downpipe will be the part of the turbo back that give you the most performance gain as the stock down pipe restricts a ton of air flow while the bigger cat back provides marginally less back pressure. Plus, keeping stock cat back will attract less attention from police and other undesirables.
I’ve always been a protune guy. The tune is way better than OTS. But, if you are having it protuned WITH the Cobb AP, then you are getting the best of both worlds.(from my understanding)
Thanks for the input, I think I have my answer! I was leaning toward the DP/Tune already so I'm happy to see I'm on the right track for the most part, thanks folks!
Talk to Devin at JMA about the possibility of utilizing an AP with his tuning. I can’t remember if they are licensed or not.