So in the morning I usually let my car idle for about 2 minutes minimum to warm up (it's in underground heated parking) - then go, and within about a minute I get to the point where I can really give it some gas up a hill...anyways at that point I get up to about 3K or so and the car sort of "shudders" a few times and then it goes smooth again. I assume this is when the turbo is kicking in prett hard. Does it just take a while for the turbo to heat up? It seems to only be when it sits over night that this happens, and it happens every time, and started probably about 3 months ago after owning the car for a year without this happening. It's an 06 WRX with an SPT intake and catback...just wondering if this is normal or something that I should be concerned about. Also one other thing to note is that a week ago I installed an AP and have it running the Stage 1, 91 octane map (using Marathon 92 octane gas) - and the problem is exactly the same with that, so I don't know! -Jeff
hey Jeff...I know those hills and that parking garage How many miles on her? Spark Plugs maybe? I had stuttering problems under WOT and changing my plugs fixed it. But that was post shifting under hard acceleration. If you're around 50k, it could be time to change them out.
Hey what's up man?? I've only got about 9500 miles so I'm not sure what it could be! BTW that garage has gone down the crapper since you left!
Wow, do you just look at the car?? Not even 10k?!? Only thing I could think of is turbulence inside the intake. Try swapping back to stock and see if it still does it.
That's something I've actually been thinking of doing lately so maybe I'll ggive it a shot - and yes I do look at the car a lot, but also try to drive in reverse when I can. Thanks for the advice - and now that you mention it, I never actually had this happen before the intake.
Yeah, without a tune, even a slight difference in turbulence can get the suby's pistons in a bunch. Especially with an aftermarket intake. Unless you really have to have the noise, you should really keep the stock airbox until you get up around 300whp. Otherwise, it can cause problems.
Thanks for the advice guys - I'll probably do that this week. So now a nice newb question: I'm using an AP - once I disconnect the battery, put the stock intake back on, and hook the battery back up, do I need to reset my ECU with the AP? Or will the disconnecting of the battery accomplish the same thing?
There's no need to disconnect the battery. Just reset the ecu with your AP once you switch back to the better (ie, the stock one) intake.
