Bumping an old thread here...so is the general consensus that you can get a 2008 to pass with P0420 (but nothing else) disabled, however 09+ need to have all DTC's enabled?
Type: Posts; User: Tom
Bumping an old thread here...so is the general consensus that you can get a 2008 to pass with P0420 (but nothing else) disabled, however 09+ need to have all DTC's enabled?
There used to be a lot of guys in the Valley, but seems most have moved on from tuning. I'm just curious if anyone is still out here with HP tuners? I have a 2008 Cobalt that needs a little love.
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I'm having the exact same problem! Been dealing with it for almost 2 years now. Dealer never able to replicate, never throws a code. Hopefully I can get some new logs and compare them to 007.
I'm curious to see what ZZP did to ramp up fuel pressure to near 3000 psi.
Ah, thanks, I'll make sure that's changed next time I make some tweaks.
Wouldn't 1.0 be a little risky, though? Or does the car only command the richer of the 2 values between the PE and the COT...
My car acted very similar at the top of 3rd...3* KR along with massive STFT spike massive drop in AFR. Your commanded lambda by the end of the pull was .77. :eek:
I have yet to figure it...
http://www.softlist.net/images/large-images/you_ve_got_mail_communications_other_e-mail_tools-3291.gif
That's where I was going to look next, actually. Tip-in is still stock, but I went ahead and changed it all to -3 for the next time I flash. I'm at work, but I'll send it your way as soon as I get...
Ok, this is killing me...if anyone has time, please check out this log. Towards the end I roll into boost starting at about 4k in 3rd, and it instantly knocks badly. I hear it right from the engine...
1 notch up is the parking lights.
Ah, yeah, I think you do have to re-do it each time you start the car. Same with comp-mode...both tied to BCM?
On my 06 and 08 you just twist the headlight lever clockwise and it enables / disables the autolights. You can't do this on an 09?
Ok, I have the midrange timing tweaked, but won't be able to actually flash and test it till the weekend. In the meantime, I'm also looking at timing up top...I believe that is still stock? Last...
Awesome, thanks! I'll take a peek at this tonight after work.
I put a tune together last night based on this, added a couple degrees of timing up top, and it's running great under WOT. Only issue is the boost tapering more than I'd like by redline, but I...