If it was that dirty and now is even slightly cleaner than before, then I would think that it is highly likely you are experiencing an improvement in performance.
Try cleaning it properly with some MAF Cleaner.
You may well Sh!t yourself with Glee !
Yes.
I had this same problem on one of my Bluebirds.
Would happen at approx the same distance from home / same intersection.
It would cut in and out while driving and sometimes just stall.
Was kinda freaky and I didn't like driving it but had no choice.
It would take a few tries to start, sometimes a few minutes.
New CAS = fixed.
Except for the burnouts, donuts and 3rd gear redlining... (especially in the wet) yeah Holt is nice.
Hope you have alarm/immobiliser and stearing lock.
My Mrs had her capri stolen from my driveway a couple of years back.
WELCOME...
Nah I dunno... I've seen it there for few months now.
I always look to see if it's there when I drive past and now I look for yours too! Lol. You new to the area? Don't drive down beside the golf course as they have recently put in an OVERKILL of speed humps. Never seen so many on one street. I used to do a lap round there to dry off a little after a wash. No more...
Check out the DIY LINK on this. Pretty easy to do and yep, stock pipes are a go.
I swear it felt more responsive straightup and now I'm on 10psi,
I'm actually smiling on the way to work at 6:30am.
Goodluck.
Rob.