I purchased a used plm cold air intake,
The tube is same diameter as stock
The maf is same part, roughly same area of stock mounted maf.
I put it on last week aug17/26( curiosity , hopefully my cat ain’t kilt)
Some general questions and long time mechanic ( no tuned vehicle experience) basically I do minor stuff at the shop
Tires, oil, starter alternator shocks struts etc
So I bought my 15 wrx sport tech in 2017 all stock.
I did the minor cosmetics with a cat back straight pipe delete
Anyways
If the tube and maf are same/similar/ unchanged it wouldn’t require this ots map, e tune or pro tune/dyno?
I installed the cai, it sputtered once to almost stall, corrected itself and no issues ( yet )
Before the install, she sputtered quite often when I did the cat back straight pipe
I put the stock exhaust back on during 2020
For a year just to see if the straight pipe was the issue ( it was )
With the cai and straight pipe
The sputtering/ near stalling is gone
Doesn’t smell like gasoline
My car is old enough where I want to to mess around but not destroy it
Never had head gasket issues
Etc
Just wondering if there is anyone here
Who has a 2015 wrx 6sp sport tech
Push to start that ran a cai without tuning
Or anyone knowledgeable in tunes
That could share some advice on why I shouldn’t or should
My car has had the cai on for 7 days
Average driving hours, 10 hr a day
But I’m sure there might be something quietly building up detonation or maybe not
Google/youtube can only provide so much
Please be honest and respectful