- May 24, 2007
- Reaction score
Their tuner used HPTuners. I'm sure the Cobalt guys see this as ordinary but this is downright impressive with just a tune on a stock car.
The final tally with more boost and timing is an impressive 278 whp (5,600 rpm) and 300 wtq (3,000 rpm), far greater than our baseline of 248 whp and 251 wtq. That works out to a gain of 30 whp and 49 wtq. The peak gains are one thing, but also check out some areas under the curve, which are 50-60 whp better than stock.