Hey all.. Im hoping to get a little help with my tune. I went with a mail order tune from a VERY popular tuner. After 2 data logs and re-tunes , I'm still having problems. From idle the car is very lazy. Taking off, let alone on a hill requires way too much rpm and slippage . And sometimes results in a backfire or popping out the exhaust.It feels like its way down on torque from stock at lower rpm's. Another problem is at pretty much any rpm or gear change if you tip in the throttle real fast is will hesitate and/or burp. Attachment 40345 If anyone can point me in the right direction Id be so thankful.
2011 Camaro
LS3
6 spd manual
comp 235/243 lsa 113 .621/.624
1 7/8 long tubes no cats
Vararam no tune CAI
dynomax axle back
Last edited by garnetcamaross; 07-29-2013 at 08:59 PM.
Can't view the log, says its an invalid link or similar. That cam by it's very design is going to be lacking torque down low compared to the stock cam, but without seeing a log with timing it's hard to say, however Gen 4s have typically over-sensitive knock sensors and will interpolate to the low timing table easily, like I say impossible to know without seeing timing and/or Knock Learn Factor, but have a look at your Low Octane table in comparison to the Hi Octane. Assuming it largely biased to the low table, it's going to be extremely lazy and that would explain popping out the exhaust. There is a large difference between hi and low tables, each to their own, but I don't believe the delta should be, or needs to be, that large for any reason.
In summary, need to ensure airmass/airflow is accurate, I hope the SD coefficients are tuned because they are playing a part up to 4000 in that tune, I can't tell by eyeball as I don't have a stock Camaro file. Then I would look to the timing tables personally and ensuring the knock sensors are working as intended. Hope that helps.
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