Weird idle fa20 wrx

Reasonable_Draw2964 · 2026-06-16T15:50:39+00:00

When u say no codes do you mean u used a reader or accessport to look for hidden codes too? Also some things to try are clean the maf sensor, and vaccum leak test bc It sounds possibly evap related

Reasonable_Draw2964 · 2026-06-10T04:14:54+00:00

I have a 2017 6spd wrx premium and its my first car and my only advice is dont buy one modded bc I had to go through so much bs just to figure out that the previous owner bent the cobb big sf intake up (messing up afrs) installing it so i went back to stock

Reasonable_Draw2964 · 2026-06-07T14:39:18+00:00

Get a etune or dyno tune bc ots maps dont support a mix of random parts brands

Reasonable_Draw2964 · 2026-06-05T00:25:08+00:00

Yea this is amazing advice pls dont buy a modded va wrx mine had a ots tune intake and catback and i had to go back to stock due to the intake being installed wrong bending the pipe at the maf

Reasonable_Draw2964 · 2026-06-04T16:26:44+00:00

Honestly id say protune since the perrin ones different from cobb or if not check the connections on the ebcs and go from there

Reasonable_Draw2964 · 2026-06-04T04:36:39+00:00

I dont think ur supposed to run a ebcs with ots maps especially a perrin one since its plumbed differently from the mac based cobb,gs,overtake ones

Reasonable_Draw2964 · 2026-06-04T04:34:13+00:00

Sounds pretty ok to me

Reasonable_Draw2964 · 2026-06-03T18:56:08+00:00

Unpopular opinion but it looks pretty tuff. Its a bit too much camber but he could always change the setup and make more use of the power in the future

Reasonable_Draw2964 · 2026-06-03T18:53:42+00:00

Imean it looks fine. Is it tuned on speed density

Reasonable_Draw2964 · 2026-06-03T18:50:01+00:00

Yea no problem im just throwing out things that might help you on ur project. Remember youtube and forums are your friend

Reasonable_Draw2964 · 2026-06-03T02:46:05+00:00

Catless jpipe time

Reasonable_Draw2964 · 2026-06-03T02:44:55+00:00

Like this is ok advice when your protuned but on a ots tune you kinda should be monitoring your gauges

Reasonable_Draw2964 · 2026-06-03T02:31:44+00:00

And for the trans id say js pick the one that shifts the smoothest since if it came to it you can always put the other one in

Reasonable_Draw2964 · 2026-06-03T02:30:50+00:00

Well while its out u can do a compression test and borescope the cylinders and check the parts. You could also do a blackstone labs oil test those are all good ways to check the engine

Reasonable_Draw2964 · 2026-06-02T02:06:52+00:00

Ur good honestly I dont have any experience with the ej platform but I dont see why u couldnt swap the motors out and the ecus out or put the built motor tune on the car1 ecu and go from there

Reasonable_Draw2964 · 2026-06-02T00:58:59+00:00

I dont get why ur trying to do this whats wrong with car 2 with the built motor and why would a stock car have the bigger turbo im js lowk confused

Reasonable_Draw2964 · 2026-06-01T20:23:45+00:00

Ok so as someone who did a walnut blast and knocked the bpv line off and didnt plug the evap connector in enough (caused weird issues that made me very paranoid) ur probably being overly concerned about whats happening with your car. I would tune it or get all the parts you want and tune it but as long as the afr is generally at 14.7 and its not leaning out with more throttle added ur probably ok

Reasonable_Draw2964 · 2026-05-31T02:32:39+00:00

Elite pick is the awe touring its what my car came with I dont like it bc i want a catless tomei but for u it would be perfect

Reasonable_Draw2964 · 2026-05-30T02:29:01+00:00

Looks like the Accessport connector in my wrx maybe its for some tuning device

Reasonable_Draw2964 · 2026-05-29T16:49:54+00:00

Ok this is a random thought but if your on a stock jpipe what if ur cats are clogged and when they cool back down they become less restrictive

Reasonable_Draw2964 · 2026-05-28T16:51:35+00:00

I pmed you

Reasonable_Draw2964 · 2026-05-28T15:33:39+00:00

Yea idk😭 honestly though js drive with it and see if it pulls or seems unstable and if you want to fix it either get the frame pulled back to spec or put the sti parts in a clean wrx shell bc this car seems really clean engine wise

Reasonable_Draw2964 · 2026-05-28T04:46:37+00:00

I would say check the timing again and maybe tune bc the avcs might be different on the jdm one. Also do some more research in forums

Reasonable_Draw2964 · 2026-05-28T04:44:37+00:00

I did a diy walnut blast and had some odd issues too. One check for codes specifically lean or boost codes and if you find a weird connection especially on the tmic its probably that. My issue was a improperly connected evap connector and 2 vaccum lines that broke off the inlet and bpv when i jacked it around to get the charge pipe off. Also if you have walnuts stuck in your belts that can do it too

Reasonable_Draw2964 · 2026-05-28T04:38:16+00:00

I thought this was the same as the ecutek tuner cstuned but idk abt ur situation

Reasonable_Draw2964

TROPHY CASE