The guys at all pro did a great job on my modifications. Installed a cobb downpipe and access port V3 in my sti and I couldn't be happier! Patrick and Brandon were easy to work with and accommodated the install with my schedule. I will be back for future mods!
So you have just the downpipe and the AP3? No intake? Stock exhaust? Did you get a protune or go with the OTS stage 2 map?
Downpipe is all you need for stage 2. Catback and intake are just noise makers until 400+ whp. Intake will also need a pro tune unless you want to grenade your engine. Also +1 for AllPro
I'm aware that a downpipe is what "Stage 2" means, but I was curious what other mods the OP had. The Cobb SF intake will work with Cobb's OTS Stage 1 and Stage 2 maps.
No intake, just cobb downpipe with the access port v3 on a stage 2 tune. Unfortunately my motor is blow now, so I'll be installing the TSM SS1 short block.
Brendan and his guys do a great job all the time. Patrick works with me to understand what needs to be done before giving an appropriate quote. I'm not leaving my WRX with anybody else but AllPro!!