after installing a new CAI (cold air intake) and catless downpipe my cold starts are a bit rough
this is an ongoing situation for the last 6~7 months, I've never bothered about it since it goes away after the car warms up
however, I've recently bought an Obdlink mx+ and did a bit of data reading and turns out I have a lot of cylinder misfires when idling during cold start, is this normal? (misfire count for the entire cold start is as follows, cyl1: 13, cyl2: 3, cyl3: 8, cyl4: 2)
quick FIY
car is a 4cyl 1.6liter engine (Peugeot 308 GT 2016)
fuel rail pressure is normal during idle (fluctuating between 780~745psi),
all 4 new sparkplugs were installed on May 5th (have around 3000km~1800miles),
all 4 new ignition coils were installed around 14000~15000km(9000miles) ago (1.5/2 years)
the car hasn't thrown any error whatsoever during the last 4 months
what can be the possible causes?
unlisted yt video of the car idle
https://youtube.com/shorts/MdZGQbnvjZc
(the car makes absolute 0 noise after the engine warms up)
forgot to mention
Scotty visits, answers a forum question once. Other forum members answer the bulk of the questions asked.
AFAIK, only fuel, ignition timing and throttle pedal sensibility were changed
The vast majority of the questions asked on this site don't involve modification or customization. Only mentioning this because it may take longer for you to get a helpful response.
You can't just put in a cold air intake and expect it to run correctly. The computer system would actually have to be reprogrammed for it to work correctly. Sure, race cars have them but they're all reprogrammed. They even reprogrammed for each race depending on the barometric pressure of the temperature, the altitude all kinds of stuff
forgot to mention that, the car was reprogrammed on the dyno and everything was working fine.
turbo pressure was not increased (at least that's what I can see from the live data).
[1.2bar/17.5psi max peak, 1.1bar/15.9psi normal operating value]
AFAIK, only fuel, ignition timing and throttle pedal sensibility were changed
the only thing that has changed on my end is that the car was tuned for 98E10 and I sometimes run 95E5 (if I know I'm gonna floor it, I make sure to run 98E10)
although my car does support multiple fuel maps, I only have one.
could this have been caused by high intake air temperatures? (haven't had the chance to upgrade my intercooler yet)
https://youtube.com/shorts/v5JS0VymZNk
Blue line is "stage1" tune I had prior to installing the parts
Red line is a completely stock map
Green line is the current tune I have now (I know the lines are horrible, small turbo and high temps)