skrolz Posted August 19, 2014 Share Posted August 19, 2014 Purchased my car completely stock. Added the Cobb intake, airbox, and Accessport (stage 1, 93, sf). The sound was great, and the acceleration in higher RPMs was slightly improved, but 2-3k in every gear became sluggish. It felt like I was flooding the engine. I was in denial until this up-pipe, thinking I just had to adjust my shift timing. Installed an Invidia up-pipe this weekend, and I don't know if I possibly fixed a small exhaust leak during the install, but the gains are VERY noticeable, along with the sluggishness between 2-3k now gone. Do the tunes that come with the Accessport assume that this has been done already, since it's pretty much a must-do? If not, is a re-tune necessary? Link to comment Share on other sites More sharing options...
Mike07LGT Posted August 19, 2014 Share Posted August 19, 2014 Adding a downpipe and getting it custom tuned will net you the most gains for the money. $200 or so for the downpipe and $150 for an etune from a member here and you will feel like its a whole different car 03 WRB WRX (RIP) 04 JBP STI (sold) 07 DGM Legacy GT (RIP) 12 OBP STI (DD) Link to comment Share on other sites More sharing options...
turboboost Posted August 19, 2014 Share Posted August 19, 2014 Since you're already running stg1, you don't necessarily need a tune for a catless(?) UP. But you might as well pick up a DP and get a stg2 tune - that's probably the best value in terms of $$ : power. Link to comment Share on other sites More sharing options...
Holla Posted August 19, 2014 Share Posted August 19, 2014 It shouldn't make a difference. I was already stage 2 when I swapped my UP but I noticed zero change when I swapped a Sti UP on my car. Link to comment Share on other sites More sharing options...
skrolz Posted August 19, 2014 Author Share Posted August 19, 2014 I guess I wasn't very clear with my question. I'm wondering if the Accessport tunes assume you have a catless up-pipe. This is purely curiosity. I ask this because it ran funny with the accessport tune on a catted up-pipe, but the catless up-pipe install made it feel like it runs like it's supposed to. Purely curiosity. Link to comment Share on other sites More sharing options...
Mike07LGT Posted August 19, 2014 Share Posted August 19, 2014 No it doesn't assume you have a catless uppipe with stage 1. When you get a downpipe the tune is specific to that and you will have to flash stage 2 on the accessport. Its probably ironic that it feels like it runs better with the uppipe 03 WRB WRX (RIP) 04 JBP STI (sold) 07 DGM Legacy GT (RIP) 12 OBP STI (DD) Link to comment Share on other sites More sharing options...
chato Posted August 19, 2014 Share Posted August 19, 2014 is it ironic or coincidental... Link to comment Share on other sites More sharing options...
Mike07LGT Posted August 19, 2014 Share Posted August 19, 2014 It is a mystery!! 03 WRB WRX (RIP) 04 JBP STI (sold) 07 DGM Legacy GT (RIP) 12 OBP STI (DD) Link to comment Share on other sites More sharing options...
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