I got a quote for a Stage 2 build on my 2015 STI. I'm trying to decide if the full exhaust is necessary, because I have gotten different opinions from 2 tuners, and also from researching here and NASIOC. Since it's the 2015, there isn't as much research yet regarding my questions, and gain estimates are very...unreliable. I think I read all the helpful suggestion threads here.
Here's what the shop recommended:
Grimmspeed electronic boost control
Invidia Catless Downpipe 3inch
It will be dyno tuned afterward.
1. Is the full exhaust necessary? It's another $1200 that I would rather not spend if all it will do is give more noise. I'd rather spend the money elsewhere. The Catless downpipe on its own should make plenty of loud.
2. No fuel pump upgrade?
3. Anything else to suggest?
Thanks in advance for any assistance.