Question from ovin08: why does the graph say the max hp is at 5100 when the tick mark on the graph is obviously before 5k rpm? anyone else notice that?
GM HPVO: The chart needs to say 4700 RPM. We’ve updated the chart and thanks for pointing that out – we are spending some late nights here working on this for you.
Question from 1rare4door: My main concern is that the pigtails have to be spliced into the factory wiring harness. This is somewhat to be desired since the splice is only as good as the individual/technician performing the task. Since we have waited this long, why not implement a plug and play pigtail that will make for a less tacky thrown together look. Lets take that extra step and make the kit look like it came from the factory and not like the beginner weekend warrior wire-nutted the splices and covered it with a snippet of duct tape!
GM HPVO: Good Question! The answer is that the female ends of the connectors that need to look like the production MAP sensor and TMAP sensor do not exist. The only way to make a jumper is to cut apart the production MAP and TMAP sensors make a connector out of them. Then a jumper could be created.
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NEW Q&A Added 7/23:
Question from 09lnfssblack: I have a question on the connectors for the map and tmap .. I would wonder if you just removed the terminal from its pin location and installed it in to the new updated map and tmap connector... Or is this going to be a sensor with the wiring coming strait out of it without the connector? If all else fails I would solder the wires together then cover with black heatshrink, then retape to make it look factory..
GM HPVO: I like the way you think. We tried to make that work but the sensors are actually from a different supplier and therefore use a different connector and pins. So, the existing connectors and pins (even if you moved the pins to the correct location) will not plug into the new kit sensors. Goood question though.
Question from 09lnfssblack: Just a thought here.. If peek torque is moved 2300 rpm later ie.4300 rpm how will this affect the car when its in cruise going up a hill in 5th? will it bog the engine down? or will I get the same effect like my diesel more power more torque more speed and the most important part "from the wife's point of view" better fuel economy?
GM HPVO: If you look at the torque it shows that you have increased torque from 2000 rpm and up. So on your observation/questions going up a hill in cruise in 5th gear the car will better maintain speed. More torque, more speed. On the fuel economy question most LNF kit owners in the other applications, HHR SS and Solstice/Sky, are reporting, after the initial thrill of putting your foot to floor wears off, 1 to 2 mpg better overall driving fuel economy.
NEW Q&A Added 7/30:
Question from superbrowndude: This kit better make it to Canada with the same release date as the US. If not, there's gonna be a lot of pissed off Cobalt owners !
GM HPVO: We wouldn't even think about leaving our friends in the great white north without this kit! The kit will be released exactly the same as the HHR SS and Solstice/Sky kits so it will be available to everyone in the US and Canada.
Question from ovin08: So what if CARB doesn't approve this kit. will we have to wait another year for GM to make changes and have to go through the approval process again? or will GM just scrap the idea of stage kits? and if GM is so sure that this kit will get CARB approval, why not release it to those states that do not use California emission standards?
GM HPVO: This kit isn't an afterthought for us. We've been behind these upgrades for all the LNF owners since day 1. We will get CARB approval once we have met all their requirements and answered all their questions. We believe that in the submission for the Executive Order we have provided all the information that CARB needs but sometimes CARB asks for clarification or more data, which we have plenty of and will provide asap if they ask. The CARB approval gives the kit 50 state emissions compliance and since this a street legal kit, we wouldn't release it as such unless it met all the emissions requirements.
