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the thing that makes me nervous about the stock ECU is that for several hundred rpms after you get full boost, it has a lean spot where it's still running AFRs in the 13s. this is why i, personally, would consider getting a tune.

 

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[quote author=cali_axela link=topic=135356.msg2914388#msg2914388 date=1233851549]
^ on a stock car? or do you have bolt-ons without an upgraded fuel pump?
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that's on a stock ecu...with or without bolt-ons. that's just how the stock ecu works, btw...it has a lean spot right after onset of boost.

 

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[quote author=cali_axela link=topic=135356.msg2914770#msg2914770 date=1233861548]
Lame...
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ya, it's pretty lame...=/

 

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[quote author=Sanch link=topic=135356.msg2925034#msg2925034 date=1234228517]
what rpm is that at. I haven't seen any lean spots with my car. Although I am tuned and stuff.
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if you do a 2.5k->redline WOT pull, you'll see it happen from roughly 3k-3.5k...freakin 13.x AFRs while you're boosting 15+psi...=/

 

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[quote author=Sanch link=topic=135356.msg2935108#msg2935108 date=1234558917]
Opp don't have that problem until abou 4k i boost at 10psi and then right when 4k kicks in bam. SUPER POWERS! If you race from 2500 rpm from a roll that not very smart if your trying to win. I haven't seen that lean spot though. But actually before I got tuned i did see that spot of 13s for no reason and then it hit 11s super fast. GOd i miss my car.
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yes, your tune cleaned the lean spot up.