Originally Posted by RPIpower
The way you assume you are making 15hp over stock is not accurate. Technical answers should be answered by, well, people with technical knowledge. Assuming that its the tune is not an accurate assumption. I can assure you that it is NOT the tune. Different dynos, different conditions, dyno operator, etc can effect the numbers. Did the dynojet have a load option? Tire pressure? Strap down tension? Fan? How do you know the mods you have all work well together? Was your mufflers designed to go with straight pipe? What type of gas? Did you get a bad tank of gas? These are all things than can effect your run and this is why we do extensive dyno testing to ensure that these errors are limited. We have countless amount of runs from our customers beating on cars that dynoed much higher. Its just a number man. Best way to see what your car is doing is test each mod alone. Not sure if your exhaust set is right? Try dynoing again with stock mufflers? Try with different gas? Try with different dyno operator? Remember, even the SAME model dyno operated by two shops or two dyno operators can give you completely different results.
All I will say is, to ensure this conversation stays honest, the only thing one can be assured of is NO ONE really knows what has happened at this point because of there being so many factors involved. To assume that the tune is fine is a grave error, just as assuming the tune is not fine is a grave error.
At the end of the day, everyone must understand that this car has been exposed to the potential for a lot of human error (error of the tuning company and error of the dyno operator).
So lets all not jump to any conclusions until everything is sorted out, which
1) finding another dyno, with a new operator
2) making sure the stock dyno was operated properly
3) making sure the tune is operating correctly
That was just a quick list of things to be done, I'm sure those such as PG can chime in with a lot more thoughts on where there may be more holes to be filled in (as he has already begun to do (see above